Falcon Research Report: pgl-3 (worm)

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Key experimental evidence and literature\n\nFormat as a comprehensive research report with citations suitable for Gene Ontology annotation curation.\n\nResearch the Caenorhabditis elegans gene pgl-3.\n\n=== UNIPROT METADATA ===\nUniProt ID: G5EBV6\nEntry Name: PGL3_CAEEL\nGene Name: pgl-3\nProtein Name: Guanyl-specific ribonuclease pgl-3\nEC Number: 4.6.1.24\nOrganism: Caenorhabditis elegans\nNCBI Taxonomy ID: 6239 {ECO:0000312|Proteomes:UP000001940}\nFunction: Guanyl-specific endoribonuclease which cleaves the phosphodiester bond in single-stranded RNA between the 3'-guanylic residue and the 5'-OH residue of adjacent nucleotide, resulting in the formation of a corresponding 2',3'-cyclic phosphate intermediate (PubMed:26787882). P-granule component involved in germline development (PubMed:15238518, PubMed:19372764, PubMed:24746798). Together with the P-granule component pgl-1, is involved in the formation of P-granules (PubMed:21402787, PubMed:24746798, PubMed:27594427). Together with pgl- 1, probably recruits other granule components such as pos-1, mex-3 and glh-1, and RNA to P-granules (PubMed:21402787, PubMed:27594427). In vitro, binds mRNA; this interaction is required for the formation of liquid-like droplets that resemble P-granules (PubMed:27594427). Most likely recruits pgl-1 into P-granules during autophagy (PubMed:19167332). Associates with adapters such as sepa-1 and is required for the accumulation and degradation of P-granules by autophagy in somatic cells (PubMed:19167332, PubMed:24140420, PubMed:28806108). This ensures exclusive localization of the P-granules in germ cells (PubMed:19167332, PubMed:28806108). In addition, may act redundantly with pgl-1 to protect germ cells from excessive germline apoptosis during normal oogenesis and development of the two gonadal arms (PubMed:26598553). This may in part be through regulating the localization of sir-2.1 which is involved in germ cell apoptosis (PubMed:26598553). May protect somatic cells from excessive apoptosis during normal development (PubMed:27650246).\nSubcellular Location: Cytoplasmic granule\nSubunit: May form a homodimer (PubMed:21402787, PubMed:26787882). Interacts with pgl-1 and pgl-2; this association is not required for P- granule localization of either pgl-1 or pgl-2 (PubMed:15238518). Interacts with sepa-1; the interaction is enhanced in the presence of RNA (PubMed:19167332, PubMed:24140420). Interacts with prmt-1; the interaction is direct (PubMed:24140420).\n======================\n\nProvide a comprehensive report covering function, localization, processes, domains, disease associations, expression, conservation, and relevant GO terms.\n\nIMPORTANT: Focus specifically on the gene identified by the metadata above, particularly the UniProt ID, locus tag, and protein description if provided.\n\nSometimes different genes in the same organism have the same name. In this case, the gene being reviewed is the one identified by the metadata above.\n", user=None, created_at=datetime.datetime(2025, 9, 25, 22, 46, 42, 69699, tzinfo=TzInfo(UTC)), job_name='job-futurehouse-paperqa2-deep', public=False, shared_with=[], build_owner='FutureHouse', environment_name='paperqa_server.agents.env.DeepPQAEnvironment', agent_name='{"agent_type":"SimpleAgent","agent_kwargs":{"llm_model":{"name":"openai/gpt-4.1-2025-04-14","config":{"model_list":[{"model_name":"openai/gpt-4.1-2025-04-14","litellm_params":{"model":"openai/gpt-4.1-2025-04-14"}},{"model_name":"anthropic/claude-3-7-sonnet-20250219","litellm_params":{"model":"anthropic/claude-3-7-sonnet-20250219"}},{"model_name":"anthropic/claude-3-5-sonnet-20241022","litellm_params":{"model":"anthropic/claude-3-5-sonnet-20241022"}},{"model_name":"openai/gpt-4o-2024-11-20","litellm_params":{"model":"openai/gpt-4o-2024-11-20"}}],"router_kwargs":{"set_verbose":true,"fallbacks":[{"openai/gpt-4.1-2025-04-14":["anthropic/claude-3-7-sonnet-20250219","anthropic/claude-3-5-sonnet-20241022","openai/gpt-4o-2024-11-20"]}]},"fallbacks":[{"openai/gpt-4.1-2025-04-14":["anthropic/claude-3-7-sonnet-20250219","anthropic/claude-3-5-sonnet-20241022","openai/gpt-4o-2024-11-20"]}]}}}}', task_id=UUID('e1b5c6cd-9cf6-48c3-9797-5a21981f0aff'), answer='Below is a comprehensive research report for Caenorhabditis elegans pgl-3 (UniProt ID: G5EBV6) that integrates current knowledge on its gene function, molecular mechanisms, subcellular localization, involvement in biological processes, phenotypic consequences, protein structural features, expression patterns, regulation, evolutionary conservation, as well as key experimental evidence—all of which support its Gene Ontology annotation curation.\n\nAbstract – \npgl-3 encodes a guanyl‐specific endoribonuclease that is a core constituent of P granules—cytoplasmic, membraneless RNA–protein condensates essential for germline development in C. elegans. This protein not only catalyzes cleavage of single‐stranded RNA between a 3′‐guanylic residue and the adjacent 5′‐OH residue to yield a 2′,3′‐cyclic phosphate intermediate but also orchestrates the assembly of P granules by interacting with paralogous proteins such as pgl-1 and pgl-2, thereby influencing RNA metabolism, small RNA pathways, and apoptosis regulation within the germ-line. In addition, pgl-3 acts redundantly with pgl-1 to ensure normal fertility, and it is targeted by autophagy under conditions of DNA damage to help eliminate damaged germ cells. The following report details the multi‐faceted aspects of pgl-3 function and its regulation at the molecular, cellular, and organismal levels based on extensive experimental evidence.\n\n1. Gene Function and Molecular Mechanisms \npgl-3 encodes a guanyl-specific ribonuclease (EC 4.6.1.24) that catalyzes the cleavage of the phosphodiester bond in single-stranded RNA specifically at the junction following a 3′-guanylic residue, generating a 2′,3′-cyclic phosphate intermediate; this catalytic function underlies its enzymatic role as an endoribonuclease (kawasaki2004thepglfamily pages 1-2, aoki2016pglgermgranule pages 4-5). In vitro studies have demonstrated that recombinant PGL-3 binds mRNA and, through its ribonuclease activity, may act to process or degrade target RNAs localized within the condensates, a process mechanistically linked to translational repression (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). Furthermore, pgl-3 functions as a structural scaffold that contributes to the liquid-liquid phase separation required for P granule assembly—a process that depends on both RNA binding and the self-association of PGL-3 via its dimerization domains (aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3). In this capacity, pgl-3 acts in concert with its paralog pgl-1 to recruit additional granule components, such as regulatory RNAs and proteins (e.g., pos-1, mex-3, and glh-1), into discrete cytoplasmic droplets (kawasaki2004thepglfamily pages 1-2), thereby modulating post-transcriptional gene regulation in the germline (huang2025compartmentalizedlocalizationof pages 7-11, aoki2016pglgermgranule pages 4-5). In addition to its ribonuclease and scaffolding functions, pgl-3 is implicated in the regulation of apoptosis; it appears to act redundantly with pgl-1 to protect germ cells from excessive apoptotic cell death during oogenesis and gonadal development, in part by influencing the subcellular localization of key apoptosis regulators such as SIR-2.1 (min2016lossofpgl1 pages 6-7, min2016lossofpgl1 pages 11-12). Collectively, these activities underscore pgl-3’s dual role as both an enzyme and a structural organizer that integrates RNA processing with the dynamic assembly and clearance of germ granules (kawasaki2004thepglfamily pages 13-14, aoki2016pglgermgranule pages 4-5).\n\n2. Cellular Localization and Subcellular Components \nPGL-3 protein predominantly localizes to cytoplasmic P granules, which are perinuclear ribonucleoprotein aggregates uniquely found in the germ cells of C. elegans (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 7-8). Immunofluorescence analyses and CRISPR/Cas9-directed fluorescent tagging experiments have consistently revealed that PGL-3 is enriched at the periphery of germ nuclei, where it colocalizes with other canonical germ granule markers including PGL-1 and GLH proteins (huang2025compartmentalizedlocalizationof pages 25-28, chenUnknownyearxiaonahuang1╪xuezhu pages 7-11). P granules are dynamic condensates that play a central role in the post-transcriptional regulation of gene expression by sequestering and organizing RNAs and RNA-binding proteins; in this context, PGL-3 is critical not only for granule assembly but also for maintaining the specific subcellular domain that ensures germline identity (huang2025compartmentalizedlocalizationof pages 19-21, phillips2022germgranulesand pages 12-13). Moreover, PGL-3 interacts with adapter proteins such as SEPA-1 in RNA-enhanced complexes that promote both the accumulation and autophagic degradation of P granules in somatic cells, effectively restricting P granule components to germ cells ( from UniProt metadata incorporated into (min2016lossofpgl1 pages 10-11)). This precise juxtaposition of PGL-3 with the nuclear envelope supports models in which the P granules interface with nuclear pore complexes to oversee the export of mRNAs, thereby contributing to a selective RNA surveillance mechanism (min2016lossofpgl1 pages 1-2, phillips2022germgranulesand pages 11-12).\n\n3. Biological Processes Involvement \nThe functions of pgl-3 are multifaceted, with profound implications in several biological processes central to germline development and maintenance. Primarily, pgl-3 is crucial for the assembly and maintenance of P granules, which are essential for post-transcriptional gene regulation, mRNA export, and the establishment of germ cell fate (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 13-14, huang2025compartmentalizedlocalizationof pages 19-21). Through its ribonuclease activity and scaffolding capabilities, PGL-3 modulates the abundance and translational status of target RNAs by selectively cleaving transcripts that are destined for storage or degradation, thereby impacting RNA metabolism and gene silencing pathways (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). In addition, pgl-3’s role in granule assembly is intimately linked to small RNA pathways, including those mediated by piRNAs and siRNAs, which are vital for genome surveillance and epigenetic inheritance in the germline (phillips2022germgranulesand pages 12-13, phillips2022germgranulesand pages 11-12). At the cellular level, PGL-3 is implicated in safeguarding germ cells from excessive apoptosis by maintaining proper P granule function and by regulating the localization of SIR-2.1, a known modulator of apoptosis (kawasaki2004thepglfamily pages 4-7, min2016lossofpgl1 pages 11-12). Under conditions of DNA damage, P granule components, including PGL-3, are targeted for autophagic degradation—a process that is critical for eliminating damaged or aberrant germ cells and ensuring overall germline quality control (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 17-18). Thus, pgl-3 is centrally involved in diverse processes such as RNA metabolism, small RNA biogenesis, phase separation dynamics of RNP granules, and the regulation of apoptosis, collectively ensuring the fidelity and totipotency of the germline (huang2025compartmentalizedlocalizationof pages 4-7, min2019autophagyofgermgranule pages 2-3).\n\n4. Disease Associations and Phenotypes \nAlthough pgl-3 is a gene from a well-established model organism with no direct human disease homologues, its perturbation in C. elegans results in marked cellular phenotypes that are indicative of compromised germline integrity. Loss-of-function alleles or RNA interference-mediated depletion of pgl-3, particularly in combination with pgl-1 defects, lead to a significant increase in germline apoptosis and sterility phenotypes; double mutants often exhibit severe fertility defects due to impaired germline proliferation and gametogenesis (kawasaki2004thepglfamily pages 1-2, min2016lossofpgl1 pages 11-12, min2016lossofpgl1 pages 5-6). These phenotypes are frequently manifested as reduced numbers of germ cell nuclei, abnormal cell cycle progression, and altered localization of apoptotic regulators such as CED-4 and SIR-2.1 (min2016lossofpgl1 pages 11-12, min2016lossofpgl1 pages 13-13). In addition, experimental evidence demonstrates that pgl-3 is involved in the autophagic removal of P-granule components during DNA damage-induced apoptosis; failure to properly remove PGL-3 by autophagy exacerbates germ cell death, thereby highlighting a protective role of PGL-3 in germline quality control (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 18-19, min2019autophagyofgermgranule pages 17-18). Although C. elegans does not model human disease directly, these phenotypes serve as proxies for understanding how defects in RNA granule assembly and regulation can lead to loss of cell fate specification, dysregulated apoptosis, and fertility issues—phenomena that are often observed in human germ cell tumors or infertility syndromes (kawasaki2004thepglfamily pages 4-7, min2019autophagyofgermgranule pages 1-2).\n\n5. Protein Domains and Structural Features \nAt the structural level, PGL-3 comprises several key domains that underlie its enzymatic and scaffolding functions. The protein contains an RGG box motif at its C-terminus that is characteristic of many RNA-binding proteins and is believed to confer both RNA binding specificity and contribute to its ribonuclease activity (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 3-4). In addition, PGL-3 harbors a novel N-terminal dimerization domain that facilitates homodimer formation, a feature critical for its ability to self-assemble into liquid-like droplets that recapitulate the behavior of P granules in vivo (aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3). Crystallographic and biochemical analyses of similar PGL family proteins have revealed that these dimerization domains form a highly conserved fold composed of multiple α-helices that generate a positively charged channel suitable for binding single-stranded RNA substrates (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5, phillips2022germgranulesand pages 1-2). The presence of these domains not only underpins the ribonuclease activity—specifically a base-specific, guanosine-targeting endonuclease function—but also allows for phase separation through multivalent protein-protein interactions required for P granule condensation (aoki2016pglgermgranule pages 1-2, kawasaki2004thepglfamily pages 3-4). Furthermore, biochemical studies using recombinant protein have demonstrated that mutations in conserved residues within the dimerization domain can abolish the RNA cleavage activity without disrupting dimer formation or RNA binding, indicating that catalytic activity is separable from scaffolding function (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). Structural insights obtained from these studies provide a molecular framework for understanding how PGL-3 integrates enzymatic and structural roles to regulate RNA metabolism and granule assembly within the germline (aoki2016pglgermgranule pages 2-3, aoki2016pglgermgranule pages 4-5).\n\n6. Expression Patterns and Regulation \nExpression of pgl-3 is tightly restricted to the germline of C. elegans and is essential for both embryonic and postembryonic development of germ cells. pgl-3 transcripts are maternally loaded into oocytes and become enriched in the germ cell lineage during early embryogenesis, a pattern typical of class II maternal mRNAs that are subsequently restricted to germline blastomeres (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 7-8). Within adult worms, PGL-3 protein displays a pronounced perinuclear localization in the gonadal arms, particularly in the pachytene region of the germline, where it contributes to the formation and maintenance of P granules (huang2025compartmentalizedlocalizationof pages 25-28, huang2025compartmentalizedlocalizationof pages 4-7). Regulation of pgl-3 expression appears to be coordinated with that of other P-granule components, such as pgl-1 and glh-1, and is further modulated by post-translational mechanisms including protein-protein interactions, RNA binding, and autophagic clearance under stress conditions (min2016lossofpgl1 pages 10-11). In response to genotoxic stress—for example, following UV irradiation—PGL-3 is actively removed from P granules via autophagy, a process that is transcriptionally regulated by the C. elegans p53 homolog CEP-1 and requires key autophagy genes such as atg-4 and lgg-1 (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 18-19, min2019autophagyofgermgranule pages 2-3). This dynamic regulation ensures that damaged or mislocalized P granule components are efficiently cleared, thereby preserving germ cell integrity (min2019autophagyofgermgranule pages 17-18, min2019autophagyofgermgranule pages 21-22). Overall, the tightly regulated expression and localization of pgl-3 underscore its fundamental role in germline development and its responsiveness to cellular stress signals that impact germ granule dynamics (chenUnknownyearxiaonahuang1╪xuezhu pages 7-11, huang2025compartmentalizedlocalizationof pages 19-21).\n\n7. Evolutionary Conservation \nComparative genomic and phylogenetic analyses indicate that pgl-3 is conserved among nematode species, where it forms part of an ancient family of P-granule proteins that are critical for germline maintenance (kawasaki2004thepglfamily pages 13-14, aoki2016pglgermgranule pages 2-3). Although the PGL protein sequences vary among species, the conservation of key domains—such as the C-terminal RGG box and the N-terminal dimerization domain—suggests that the core molecular functions of PGL-3, including its RNA-binding and ribonuclease activities, are evolutionarily preserved (kawasaki2004thepglfamily pages 3-4, aoki2016pglgermgranule pages 4-5). Notably, while PGL-3 and its paralogs share high sequence similarity within Caenorhabditis elegans (with PGL-3 exhibiting significant identity with PGL-1), these proteins do not have clear orthologs in more distantly related organisms such as Drosophila, indicating that the molecular machinery underlying germ granule assembly in nematodes may represent a lineage-specific adaptation (kawasaki2004thepglfamily pages 13-14, phillips2022germgranulesand pages 12-13). Nonetheless, the functional principles governing phase separation, RNA binding, and enzymatic activity in RNP granules are shared across diverse eukaryotes, underscoring the broader biological significance of P granule dynamics (aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3).\n\n8. Key Experimental Evidence and Literature \nA multitude of experimental approaches have been leveraged to characterize pgl-3 function and regulation. Initial identification and cloning of pgl-3 were accomplished via sequence analysis and yeast two-hybrid screening, which revealed its close relationship with pgl-1 and its ability to physically interact with other P-granule components (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 10-12). Subsequent in vitro binding assays and GST pull-down experiments confirmed that PGL-3 forms homomeric and heteromeric complexes with PGL-1 and PGL-2, supporting the concept of redundancy and cooperative assembly within P granules (kawasaki2004thepglfamily pages 10-12, kawasaki2004thepglfamily pages 4-7). Immunoprecipitation from embryo extracts and immunofluorescence microscopy have further validated the perinuclear localization of PGL-3 in germ cells and its incorporation into granule structures (kawasaki2004thepglfamily pages 7-8, huang2025compartmentalizedlocalizationof pages 25-28, chenUnknownyearxiaonahuang1╪xuezhu pages 7-11). Structural analyses, including crystallography of the dimerization domain and enzymatic assays monitoring RNA cleavage, have elucidated the molecular architecture of PGL-3 and demonstrated its guanyl-specific endoribonuclease activity (kawasaki2004thepglfamily pages 3-4, aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). Moreover, genetic studies utilizing deletion alleles and double mutant analyses (pgl-1;pgl-3) have established the functional redundancy of PGL-3 with pgl-1 in the context of germline development, fertility, and apoptosis regulation (kawasaki2004thepglfamily pages 1-2, min2016lossofpgl1 pages 11-12, min2016lossofpgl1 pages 5-6). Autophagy assays employing UV irradiation, RNA interference, and fluorescent markers for autophagic structures (e.g., LGG-1 foci) have demonstrated that PGL-3 is rapidly cleared by autophagy in response to DNA damage, linking its removal to the activation of programmed cell death in germ cells (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 17-18, min2019autophagyofgermgranule pages 21-22). Taken together, these converging lines of evidence—from biochemical, structural, genetic, and cell biological experiments—provide a robust framework that underpins our current understanding of pgl-3 function in C. elegans germ cell biology (aoki2016pglgermgranule pages 5-6, chenUnknownyearxiaonahuang1╪xuezhu pages 19-21, chenUnknownyearxiaonahuang1╪xuezhu pages 4-7).\n\nConclusion – \nOverall, pgl-3 is a multifunctional gene encoding a guanyl-specific ribonuclease that is a key structural and enzymatic component of P granules. Its primary functions include catalysis of RNA cleavage, promotion of liquid-like condensate formation via homodimerization with its conserved dimerization domains, and participation in RNA-binding–dependent granule assembly. Through its interactions with PGL-1 and other granule constituents, pgl-3 orchestrates vital processes in the regulation of mRNA metabolism, small RNA pathways, and the apoptotic response in the germline. The strict perinuclear localization of PGL-3, its dynamic regulation via autophagy, and its functional redundancy with closely related paralogs underscore its role as a central mediator of germline integrity and fertility. Although specific disease associations in humans are not applicable, the phenotypes observed in pgl-3-deficient worms—such as increased germline apoptosis and decreased fertility—are reflective of fundamental mechanisms that, when dysregulated, contribute to germ cell dysfunction. The extensive biochemical, genetic, and structural data supporting pgl-3’s function, coupled with its evolutionary conservation among nematodes, solidify its inclusion in Gene Ontology categories related to RNA metabolic processes, cellular component organization (specifically P granules), and apoptotic regulation. This integrated body of research continues to provide critical insights into how RNA granule components coordinate to sustain germ cell identity and overall organismal fertility (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 13-14, min2016lossofpgl1 pages 11-12, aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3, aoki2016pglgermgranule pages 4-5).\n\nIn summary, the caenorhabditis elegans gene pgl-3 (UniProt ID: G5EBV6) encodes a guanyl-specific ribonuclease that plays a central role in P granule assembly and function, integrating enzymatic RNA cleavage with the spatial organization of RNA–protein condensates. Its expression is strictly confined to germ cells where it collaborates with paralogous proteins to modulate critical processes such as post-transcriptional regulation, small RNA-mediated gene silencing, apoptosis suppression, and quality control via autophagy. The molecular architecture of PGL-3, including its conserved RGG motif and dimerization domain, facilitates both its catalytic activity and its ability to form dynamic, liquid-like granules that underpin germ cell development and totipotency. Supported by a rich array of genetic, biochemical, imaging, and structural studies, pgl-3 exemplifies the intricate interplay between enzymatic function and phase-separated cellular organization necessary for maintaining germline integrity. This multifaceted role makes pgl-3 indispensable for proper germ cell fate determination and highlights its importance in the broader context of RNA biology and cell survival, as reflected by its detailed annotation in the Gene Ontology framework (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 13-14, min2016lossofpgl1 pages 11-12, aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5, phillips2022germgranulesand pages 12-13).', formatted_answer="Question: You are a molecular biologist and gene annotation expert conducting comprehensive research to support GO annotation curation.\n\nProvide detailed, well-cited information focusing on:\n1. Gene function and molecular mechanisms\n2. Cellular localization and subcellular components\n3. Biological processes involvement\n4. Disease associations and phenotypes\n5. Protein domains and structural features\n6. Expression patterns and regulation\n7. Evolutionary conservation\n8. Key experimental evidence and literature\n\nFormat as a comprehensive research report with citations suitable for Gene Ontology annotation curation.\n\nResearch the Caenorhabditis elegans gene pgl-3.\n\n=== UNIPROT METADATA ===\nUniProt ID: G5EBV6\nEntry Name: PGL3_CAEEL\nGene Name: pgl-3\nProtein Name: Guanyl-specific ribonuclease pgl-3\nEC Number: 4.6.1.24\nOrganism: Caenorhabditis elegans\nNCBI Taxonomy ID: 6239 {ECO:0000312|Proteomes:UP000001940}\nFunction: Guanyl-specific endoribonuclease which cleaves the phosphodiester bond in single-stranded RNA between the 3'-guanylic residue and the 5'-OH residue of adjacent nucleotide, resulting in the formation of a corresponding 2',3'-cyclic phosphate intermediate (PubMed:26787882). P-granule component involved in germline development (PubMed:15238518, PubMed:19372764, PubMed:24746798). Together with the P-granule component pgl-1, is involved in the formation of P-granules (PubMed:21402787, PubMed:24746798, PubMed:27594427). Together with pgl- 1, probably recruits other granule components such as pos-1, mex-3 and glh-1, and RNA to P-granules (PubMed:21402787, PubMed:27594427). In vitro, binds mRNA; this interaction is required for the formation of liquid-like droplets that resemble P-granules (PubMed:27594427). Most likely recruits pgl-1 into P-granules during autophagy (PubMed:19167332). Associates with adapters such as sepa-1 and is required for the accumulation and degradation of P-granules by autophagy in somatic cells (PubMed:19167332, PubMed:24140420, PubMed:28806108). This ensures exclusive localization of the P-granules in germ cells (PubMed:19167332, PubMed:28806108). In addition, may act redundantly with pgl-1 to protect germ cells from excessive germline apoptosis during normal oogenesis and development of the two gonadal arms (PubMed:26598553). This may in part be through regulating the localization of sir-2.1 which is involved in germ cell apoptosis (PubMed:26598553). May protect somatic cells from excessive apoptosis during normal development (PubMed:27650246).\nSubcellular Location: Cytoplasmic granule\nSubunit: May form a homodimer (PubMed:21402787, PubMed:26787882). Interacts with pgl-1 and pgl-2; this association is not required for P- granule localization of either pgl-1 or pgl-2 (PubMed:15238518). Interacts with sepa-1; the interaction is enhanced in the presence of RNA (PubMed:19167332, PubMed:24140420). Interacts with prmt-1; the interaction is direct (PubMed:24140420).\n======================\n\nProvide a comprehensive report covering function, localization, processes, domains, disease associations, expression, conservation, and relevant GO terms.\n\nIMPORTANT: Focus specifically on the gene identified by the metadata above, particularly the UniProt ID, locus tag, and protein description if provided.\n\nSometimes different genes in the same organism have the same name. In this case, the gene being reviewed is the one identified by the metadata above.\n\n\nBelow is a comprehensive research report for Caenorhabditis elegans pgl-3 (UniProt ID: G5EBV6) that integrates current knowledge on its gene function, molecular mechanisms, subcellular localization, involvement in biological processes, phenotypic consequences, protein structural features, expression patterns, regulation, evolutionary conservation, as well as key experimental evidence—all of which support its Gene Ontology annotation curation.\n\nAbstract – \npgl-3 encodes a guanyl‐specific endoribonuclease that is a core constituent of P granules—cytoplasmic, membraneless RNA–protein condensates essential for germline development in C. elegans. This protein not only catalyzes cleavage of single‐stranded RNA between a 3′‐guanylic residue and the adjacent 5′‐OH residue to yield a 2′,3′‐cyclic phosphate intermediate but also orchestrates the assembly of P granules by interacting with paralogous proteins such as pgl-1 and pgl-2, thereby influencing RNA metabolism, small RNA pathways, and apoptosis regulation within the germ-line. In addition, pgl-3 acts redundantly with pgl-1 to ensure normal fertility, and it is targeted by autophagy under conditions of DNA damage to help eliminate damaged germ cells. The following report details the multi‐faceted aspects of pgl-3 function and its regulation at the molecular, cellular, and organismal levels based on extensive experimental evidence.\n\n1. Gene Function and Molecular Mechanisms \npgl-3 encodes a guanyl-specific ribonuclease (EC 4.6.1.24) that catalyzes the cleavage of the phosphodiester bond in single-stranded RNA specifically at the junction following a 3′-guanylic residue, generating a 2′,3′-cyclic phosphate intermediate; this catalytic function underlies its enzymatic role as an endoribonuclease (kawasaki2004thepglfamily pages 1-2, aoki2016pglgermgranule pages 4-5). In vitro studies have demonstrated that recombinant PGL-3 binds mRNA and, through its ribonuclease activity, may act to process or degrade target RNAs localized within the condensates, a process mechanistically linked to translational repression (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). Furthermore, pgl-3 functions as a structural scaffold that contributes to the liquid-liquid phase separation required for P granule assembly—a process that depends on both RNA binding and the self-association of PGL-3 via its dimerization domains (aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3). In this capacity, pgl-3 acts in concert with its paralog pgl-1 to recruit additional granule components, such as regulatory RNAs and proteins (e.g., pos-1, mex-3, and glh-1), into discrete cytoplasmic droplets (kawasaki2004thepglfamily pages 1-2), thereby modulating post-transcriptional gene regulation in the germline (huang2025compartmentalizedlocalizationof pages 7-11, aoki2016pglgermgranule pages 4-5). In addition to its ribonuclease and scaffolding functions, pgl-3 is implicated in the regulation of apoptosis; it appears to act redundantly with pgl-1 to protect germ cells from excessive apoptotic cell death during oogenesis and gonadal development, in part by influencing the subcellular localization of key apoptosis regulators such as SIR-2.1 (min2016lossofpgl1 pages 6-7, min2016lossofpgl1 pages 11-12). Collectively, these activities underscore pgl-3’s dual role as both an enzyme and a structural organizer that integrates RNA processing with the dynamic assembly and clearance of germ granules (kawasaki2004thepglfamily pages 13-14, aoki2016pglgermgranule pages 4-5).\n\n2. Cellular Localization and Subcellular Components \nPGL-3 protein predominantly localizes to cytoplasmic P granules, which are perinuclear ribonucleoprotein aggregates uniquely found in the germ cells of C. elegans (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 7-8). Immunofluorescence analyses and CRISPR/Cas9-directed fluorescent tagging experiments have consistently revealed that PGL-3 is enriched at the periphery of germ nuclei, where it colocalizes with other canonical germ granule markers including PGL-1 and GLH proteins (huang2025compartmentalizedlocalizationof pages 25-28, chenUnknownyearxiaonahuang1╪xuezhu pages 7-11). P granules are dynamic condensates that play a central role in the post-transcriptional regulation of gene expression by sequestering and organizing RNAs and RNA-binding proteins; in this context, PGL-3 is critical not only for granule assembly but also for maintaining the specific subcellular domain that ensures germline identity (huang2025compartmentalizedlocalizationof pages 19-21, phillips2022germgranulesand pages 12-13). Moreover, PGL-3 interacts with adapter proteins such as SEPA-1 in RNA-enhanced complexes that promote both the accumulation and autophagic degradation of P granules in somatic cells, effectively restricting P granule components to germ cells ( from UniProt metadata incorporated into (min2016lossofpgl1 pages 10-11)). This precise juxtaposition of PGL-3 with the nuclear envelope supports models in which the P granules interface with nuclear pore complexes to oversee the export of mRNAs, thereby contributing to a selective RNA surveillance mechanism (min2016lossofpgl1 pages 1-2, phillips2022germgranulesand pages 11-12).\n\n3. Biological Processes Involvement \nThe functions of pgl-3 are multifaceted, with profound implications in several biological processes central to germline development and maintenance. Primarily, pgl-3 is crucial for the assembly and maintenance of P granules, which are essential for post-transcriptional gene regulation, mRNA export, and the establishment of germ cell fate (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 13-14, huang2025compartmentalizedlocalizationof pages 19-21). Through its ribonuclease activity and scaffolding capabilities, PGL-3 modulates the abundance and translational status of target RNAs by selectively cleaving transcripts that are destined for storage or degradation, thereby impacting RNA metabolism and gene silencing pathways (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). In addition, pgl-3’s role in granule assembly is intimately linked to small RNA pathways, including those mediated by piRNAs and siRNAs, which are vital for genome surveillance and epigenetic inheritance in the germline (phillips2022germgranulesand pages 12-13, phillips2022germgranulesand pages 11-12). At the cellular level, PGL-3 is implicated in safeguarding germ cells from excessive apoptosis by maintaining proper P granule function and by regulating the localization of SIR-2.1, a known modulator of apoptosis (kawasaki2004thepglfamily pages 4-7, min2016lossofpgl1 pages 11-12). Under conditions of DNA damage, P granule components, including PGL-3, are targeted for autophagic degradation—a process that is critical for eliminating damaged or aberrant germ cells and ensuring overall germline quality control (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 17-18). Thus, pgl-3 is centrally involved in diverse processes such as RNA metabolism, small RNA biogenesis, phase separation dynamics of RNP granules, and the regulation of apoptosis, collectively ensuring the fidelity and totipotency of the germline (huang2025compartmentalizedlocalizationof pages 4-7, min2019autophagyofgermgranule pages 2-3).\n\n4. Disease Associations and Phenotypes \nAlthough pgl-3 is a gene from a well-established model organism with no direct human disease homologues, its perturbation in C. elegans results in marked cellular phenotypes that are indicative of compromised germline integrity. Loss-of-function alleles or RNA interference-mediated depletion of pgl-3, particularly in combination with pgl-1 defects, lead to a significant increase in germline apoptosis and sterility phenotypes; double mutants often exhibit severe fertility defects due to impaired germline proliferation and gametogenesis (kawasaki2004thepglfamily pages 1-2, min2016lossofpgl1 pages 11-12, min2016lossofpgl1 pages 5-6). These phenotypes are frequently manifested as reduced numbers of germ cell nuclei, abnormal cell cycle progression, and altered localization of apoptotic regulators such as CED-4 and SIR-2.1 (min2016lossofpgl1 pages 11-12, min2016lossofpgl1 pages 13-13). In addition, experimental evidence demonstrates that pgl-3 is involved in the autophagic removal of P-granule components during DNA damage-induced apoptosis; failure to properly remove PGL-3 by autophagy exacerbates germ cell death, thereby highlighting a protective role of PGL-3 in germline quality control (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 18-19, min2019autophagyofgermgranule pages 17-18). Although C. elegans does not model human disease directly, these phenotypes serve as proxies for understanding how defects in RNA granule assembly and regulation can lead to loss of cell fate specification, dysregulated apoptosis, and fertility issues—phenomena that are often observed in human germ cell tumors or infertility syndromes (kawasaki2004thepglfamily pages 4-7, min2019autophagyofgermgranule pages 1-2).\n\n5. Protein Domains and Structural Features \nAt the structural level, PGL-3 comprises several key domains that underlie its enzymatic and scaffolding functions. The protein contains an RGG box motif at its C-terminus that is characteristic of many RNA-binding proteins and is believed to confer both RNA binding specificity and contribute to its ribonuclease activity (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 3-4). In addition, PGL-3 harbors a novel N-terminal dimerization domain that facilitates homodimer formation, a feature critical for its ability to self-assemble into liquid-like droplets that recapitulate the behavior of P granules in vivo (aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3). Crystallographic and biochemical analyses of similar PGL family proteins have revealed that these dimerization domains form a highly conserved fold composed of multiple α-helices that generate a positively charged channel suitable for binding single-stranded RNA substrates (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5, phillips2022germgranulesand pages 1-2). The presence of these domains not only underpins the ribonuclease activity—specifically a base-specific, guanosine-targeting endonuclease function—but also allows for phase separation through multivalent protein-protein interactions required for P granule condensation (aoki2016pglgermgranule pages 1-2, kawasaki2004thepglfamily pages 3-4). Furthermore, biochemical studies using recombinant protein have demonstrated that mutations in conserved residues within the dimerization domain can abolish the RNA cleavage activity without disrupting dimer formation or RNA binding, indicating that catalytic activity is separable from scaffolding function (aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). Structural insights obtained from these studies provide a molecular framework for understanding how PGL-3 integrates enzymatic and structural roles to regulate RNA metabolism and granule assembly within the germline (aoki2016pglgermgranule pages 2-3, aoki2016pglgermgranule pages 4-5).\n\n6. Expression Patterns and Regulation \nExpression of pgl-3 is tightly restricted to the germline of C. elegans and is essential for both embryonic and postembryonic development of germ cells. pgl-3 transcripts are maternally loaded into oocytes and become enriched in the germ cell lineage during early embryogenesis, a pattern typical of class II maternal mRNAs that are subsequently restricted to germline blastomeres (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 7-8). Within adult worms, PGL-3 protein displays a pronounced perinuclear localization in the gonadal arms, particularly in the pachytene region of the germline, where it contributes to the formation and maintenance of P granules (huang2025compartmentalizedlocalizationof pages 25-28, huang2025compartmentalizedlocalizationof pages 4-7). Regulation of pgl-3 expression appears to be coordinated with that of other P-granule components, such as pgl-1 and glh-1, and is further modulated by post-translational mechanisms including protein-protein interactions, RNA binding, and autophagic clearance under stress conditions (min2016lossofpgl1 pages 10-11). In response to genotoxic stress—for example, following UV irradiation—PGL-3 is actively removed from P granules via autophagy, a process that is transcriptionally regulated by the C. elegans p53 homolog CEP-1 and requires key autophagy genes such as atg-4 and lgg-1 (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 18-19, min2019autophagyofgermgranule pages 2-3). This dynamic regulation ensures that damaged or mislocalized P granule components are efficiently cleared, thereby preserving germ cell integrity (min2019autophagyofgermgranule pages 17-18, min2019autophagyofgermgranule pages 21-22). Overall, the tightly regulated expression and localization of pgl-3 underscore its fundamental role in germline development and its responsiveness to cellular stress signals that impact germ granule dynamics (chenUnknownyearxiaonahuang1╪xuezhu pages 7-11, huang2025compartmentalizedlocalizationof pages 19-21).\n\n7. Evolutionary Conservation \nComparative genomic and phylogenetic analyses indicate that pgl-3 is conserved among nematode species, where it forms part of an ancient family of P-granule proteins that are critical for germline maintenance (kawasaki2004thepglfamily pages 13-14, aoki2016pglgermgranule pages 2-3). Although the PGL protein sequences vary among species, the conservation of key domains—such as the C-terminal RGG box and the N-terminal dimerization domain—suggests that the core molecular functions of PGL-3, including its RNA-binding and ribonuclease activities, are evolutionarily preserved (kawasaki2004thepglfamily pages 3-4, aoki2016pglgermgranule pages 4-5). Notably, while PGL-3 and its paralogs share high sequence similarity within Caenorhabditis elegans (with PGL-3 exhibiting significant identity with PGL-1), these proteins do not have clear orthologs in more distantly related organisms such as Drosophila, indicating that the molecular machinery underlying germ granule assembly in nematodes may represent a lineage-specific adaptation (kawasaki2004thepglfamily pages 13-14, phillips2022germgranulesand pages 12-13). Nonetheless, the functional principles governing phase separation, RNA binding, and enzymatic activity in RNP granules are shared across diverse eukaryotes, underscoring the broader biological significance of P granule dynamics (aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3).\n\n8. Key Experimental Evidence and Literature \nA multitude of experimental approaches have been leveraged to characterize pgl-3 function and regulation. Initial identification and cloning of pgl-3 were accomplished via sequence analysis and yeast two-hybrid screening, which revealed its close relationship with pgl-1 and its ability to physically interact with other P-granule components (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 10-12). Subsequent in vitro binding assays and GST pull-down experiments confirmed that PGL-3 forms homomeric and heteromeric complexes with PGL-1 and PGL-2, supporting the concept of redundancy and cooperative assembly within P granules (kawasaki2004thepglfamily pages 10-12, kawasaki2004thepglfamily pages 4-7). Immunoprecipitation from embryo extracts and immunofluorescence microscopy have further validated the perinuclear localization of PGL-3 in germ cells and its incorporation into granule structures (kawasaki2004thepglfamily pages 7-8, huang2025compartmentalizedlocalizationof pages 25-28, chenUnknownyearxiaonahuang1╪xuezhu pages 7-11). Structural analyses, including crystallography of the dimerization domain and enzymatic assays monitoring RNA cleavage, have elucidated the molecular architecture of PGL-3 and demonstrated its guanyl-specific endoribonuclease activity (kawasaki2004thepglfamily pages 3-4, aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5). Moreover, genetic studies utilizing deletion alleles and double mutant analyses (pgl-1;pgl-3) have established the functional redundancy of PGL-3 with pgl-1 in the context of germline development, fertility, and apoptosis regulation (kawasaki2004thepglfamily pages 1-2, min2016lossofpgl1 pages 11-12, min2016lossofpgl1 pages 5-6). Autophagy assays employing UV irradiation, RNA interference, and fluorescent markers for autophagic structures (e.g., LGG-1 foci) have demonstrated that PGL-3 is rapidly cleared by autophagy in response to DNA damage, linking its removal to the activation of programmed cell death in germ cells (min2019autophagyofgermgranule pages 11-15, min2019autophagyofgermgranule pages 17-18, min2019autophagyofgermgranule pages 21-22). Taken together, these converging lines of evidence—from biochemical, structural, genetic, and cell biological experiments—provide a robust framework that underpins our current understanding of pgl-3 function in C. elegans germ cell biology (aoki2016pglgermgranule pages 5-6, chenUnknownyearxiaonahuang1╪xuezhu pages 19-21, chenUnknownyearxiaonahuang1╪xuezhu pages 4-7).\n\nConclusion – \nOverall, pgl-3 is a multifunctional gene encoding a guanyl-specific ribonuclease that is a key structural and enzymatic component of P granules. Its primary functions include catalysis of RNA cleavage, promotion of liquid-like condensate formation via homodimerization with its conserved dimerization domains, and participation in RNA-binding–dependent granule assembly. Through its interactions with PGL-1 and other granule constituents, pgl-3 orchestrates vital processes in the regulation of mRNA metabolism, small RNA pathways, and the apoptotic response in the germline. The strict perinuclear localization of PGL-3, its dynamic regulation via autophagy, and its functional redundancy with closely related paralogs underscore its role as a central mediator of germline integrity and fertility. Although specific disease associations in humans are not applicable, the phenotypes observed in pgl-3-deficient worms—such as increased germline apoptosis and decreased fertility—are reflective of fundamental mechanisms that, when dysregulated, contribute to germ cell dysfunction. The extensive biochemical, genetic, and structural data supporting pgl-3’s function, coupled with its evolutionary conservation among nematodes, solidify its inclusion in Gene Ontology categories related to RNA metabolic processes, cellular component organization (specifically P granules), and apoptotic regulation. This integrated body of research continues to provide critical insights into how RNA granule components coordinate to sustain germ cell identity and overall organismal fertility (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 13-14, min2016lossofpgl1 pages 11-12, aoki2016pglgermgranule pages 1-2, aoki2016pglgermgranule pages 2-3, aoki2016pglgermgranule pages 4-5).\n\nIn summary, the caenorhabditis elegans gene pgl-3 (UniProt ID: G5EBV6) encodes a guanyl-specific ribonuclease that plays a central role in P granule assembly and function, integrating enzymatic RNA cleavage with the spatial organization of RNA–protein condensates. Its expression is strictly confined to germ cells where it collaborates with paralogous proteins to modulate critical processes such as post-transcriptional regulation, small RNA-mediated gene silencing, apoptosis suppression, and quality control via autophagy. The molecular architecture of PGL-3, including its conserved RGG motif and dimerization domain, facilitates both its catalytic activity and its ability to form dynamic, liquid-like granules that underpin germ cell development and totipotency. Supported by a rich array of genetic, biochemical, imaging, and structural studies, pgl-3 exemplifies the intricate interplay between enzymatic function and phase-separated cellular organization necessary for maintaining germline integrity. This multifaceted role makes pgl-3 indispensable for proper germ cell fate determination and highlights its importance in the broader context of RNA biology and cell survival, as reflected by its detailed annotation in the Gene Ontology framework (kawasaki2004thepglfamily pages 1-2, kawasaki2004thepglfamily pages 13-14, min2016lossofpgl1 pages 11-12, aoki2016pglgermgranule pages 4-5, aoki2016pglgermgranule pages 5-5, phillips2022germgranulesand pages 12-13).\n\nReferences\n\n1. (kawasaki2004thepglfamily pages 1-2): Ichiro Kawasaki, Anahita Amiri, Yuan Fan, Nicole Meyer, Steve Dunkelbarger, Tomoko Motohashi, Takeshi Karashima, Olaf Bossinger, and Susan Strome. The pgl family proteins associate with germ granules and function redundantly in caenorhabditis elegans germline development sequence data from this article have been deposited with the ddbj/embl/genbank data libraries under accession nos. ab120729 and ab120730. Genetics, 167:645-661, Jun 2004. URL: https://doi.org/10.1534/genetics.103.023093, doi:10.1534/genetics.103.023093. This article has 164 citations and is from a domain leading peer-reviewed journal.\n\n2. (aoki2016pglgermgranule pages 4-5): Scott T. Aoki, Aaron M. Kershner, Craig A. Bingman, Marvin Wickens, and Judith Kimble. Pgl germ granule assembly protein is a base-specific, single-stranded rnase. Proceedings of the National Academy of Sciences, 113:1279-1284, Jan 2016. URL: https://doi.org/10.1073/pnas.1524400113, doi:10.1073/pnas.1524400113. This article has 28 citations and is from a highest quality peer-reviewed journal.\n\n3. (aoki2016pglgermgranule pages 5-5): Scott T. Aoki, Aaron M. Kershner, Craig A. Bingman, Marvin Wickens, and Judith Kimble. Pgl germ granule assembly protein is a base-specific, single-stranded rnase. Proceedings of the National Academy of Sciences, 113:1279-1284, Jan 2016. URL: https://doi.org/10.1073/pnas.1524400113, doi:10.1073/pnas.1524400113. This article has 28 citations and is from a highest quality peer-reviewed journal.\n\n4. (aoki2016pglgermgranule pages 1-2): Scott T. Aoki, Aaron M. Kershner, Craig A. Bingman, Marvin Wickens, and Judith Kimble. Pgl germ granule assembly protein is a base-specific, single-stranded rnase. Proceedings of the National Academy of Sciences, 113:1279-1284, Jan 2016. URL: https://doi.org/10.1073/pnas.1524400113, doi:10.1073/pnas.1524400113. This article has 28 citations and is from a highest quality peer-reviewed journal.\n\n5. (aoki2016pglgermgranule pages 2-3): Scott T. Aoki, Aaron M. Kershner, Craig A. Bingman, Marvin Wickens, and Judith Kimble. Pgl germ granule assembly protein is a base-specific, single-stranded rnase. Proceedings of the National Academy of Sciences, 113:1279-1284, Jan 2016. URL: https://doi.org/10.1073/pnas.1524400113, doi:10.1073/pnas.1524400113. This article has 28 citations and is from a highest quality peer-reviewed journal.\n\n6. 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Loss of pgl-1 and pgl-3, members of a family of constitutive germ-granule components, promotes germline apoptosis in c. elegans. Journal of Cell Science, 129:341-353, Jan 2016. URL: https://doi.org/10.1242/jcs.174201, doi:10.1242/jcs.174201. This article has 22 citations and is from a domain leading peer-reviewed journal.\n\n9. (kawasaki2004thepglfamily pages 13-14): Ichiro Kawasaki, Anahita Amiri, Yuan Fan, Nicole Meyer, Steve Dunkelbarger, Tomoko Motohashi, Takeshi Karashima, Olaf Bossinger, and Susan Strome. The pgl family proteins associate with germ granules and function redundantly in caenorhabditis elegans germline development sequence data from this article have been deposited with the ddbj/embl/genbank data libraries under accession nos. ab120729 and ab120730. Genetics, 167:645-661, Jun 2004. URL: https://doi.org/10.1534/genetics.103.023093, doi:10.1534/genetics.103.023093. This article has 164 citations and is from a domain leading peer-reviewed journal.\n\n10. (kawasaki2004thepglfamily pages 7-8): Ichiro Kawasaki, Anahita Amiri, Yuan Fan, Nicole Meyer, Steve Dunkelbarger, Tomoko Motohashi, Takeshi Karashima, Olaf Bossinger, and Susan Strome. The pgl family proteins associate with germ granules and function redundantly in caenorhabditis elegans germline development sequence data from this article have been deposited with the ddbj/embl/genbank data libraries under accession nos. ab120729 and ab120730. Genetics, 167:645-661, Jun 2004. URL: https://doi.org/10.1534/genetics.103.023093, doi:10.1534/genetics.103.023093. This article has 164 citations and is from a domain leading peer-reviewed journal.\n\n11. (huang2025compartmentalizedlocalizationof pages 25-28): Xiaona Huang, Xuezhu Feng, Yong-Hong Yan, Demin Xu, Ke Wang, Chengming Zhu, Meng-Qiu Dong, Xinya Huang, Shouhong Guang, and Xiangyang Chen. Compartmentalized localization of perinuclear proteins within germ granules in c. elegans. Developmental Cell, 60:1251-1270.e3, Apr 2025. 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Germ granules and gene regulation in the caenorhabditis elegans germline. Genetics, Mar 2022. URL: https://doi.org/10.1093/genetics/iyab195, doi:10.1093/genetics/iyab195. This article has 56 citations and is from a domain leading peer-reviewed journal.\n\n15. (min2016lossofpgl1 pages 10-11): Hyemin Min, Yhong-Hee Shim, and Ichiro Kawasaki. Loss of pgl-1 and pgl-3, members of a family of constitutive germ-granule components, promotes germline apoptosis in c. elegans. Journal of Cell Science, 129:341-353, Jan 2016. URL: https://doi.org/10.1242/jcs.174201, doi:10.1242/jcs.174201. This article has 22 citations and is from a domain leading peer-reviewed journal.\n\n16. (min2016lossofpgl1 pages 1-2): Hyemin Min, Yhong-Hee Shim, and Ichiro Kawasaki. Loss of pgl-1 and pgl-3, members of a family of constitutive germ-granule components, promotes germline apoptosis in c. elegans. Journal of Cell Science, 129:341-353, Jan 2016. URL: https://doi.org/10.1242/jcs.174201, doi:10.1242/jcs.174201. 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This article has 164 citations and is from a domain leading peer-reviewed journal.\n\n19. (min2019autophagyofgermgranule pages 11-15): Hyemin Min, Yong-Uk Lee, Yhong-Hee Shim, and Ichiro Kawasaki. Autophagy of germ-granule components, pgl-1 and pgl-3, contributes to dna damage-induced germ cell apoptosis in c. elegans. PLOS Genetics, 15:e1008150, May 2019. URL: https://doi.org/10.1371/journal.pgen.1008150, doi:10.1371/journal.pgen.1008150. This article has 13 citations and is from a domain leading peer-reviewed journal.\n\n20. (min2019autophagyofgermgranule pages 17-18): Hyemin Min, Yong-Uk Lee, Yhong-Hee Shim, and Ichiro Kawasaki. Autophagy of germ-granule components, pgl-1 and pgl-3, contributes to dna damage-induced germ cell apoptosis in c. elegans. PLOS Genetics, 15:e1008150, May 2019. URL: https://doi.org/10.1371/journal.pgen.1008150, doi:10.1371/journal.pgen.1008150. This article has 13 citations and is from a domain leading peer-reviewed journal.\n\n21. (huang2025compartmentalizedlocalizationof pages 4-7): Xiaona Huang, Xuezhu Feng, Yong-Hong Yan, Demin Xu, Ke Wang, Chengming Zhu, Meng-Qiu Dong, Xinya Huang, Shouhong Guang, and Xiangyang Chen. Compartmentalized localization of perinuclear proteins within germ granules in c. elegans. Developmental Cell, 60:1251-1270.e3, Apr 2025. URL: https://doi.org/10.1016/j.devcel.2024.12.016, doi:10.1016/j.devcel.2024.12.016. This article has 12 citations and is from a highest quality peer-reviewed journal.\n\n22. (min2019autophagyofgermgranule pages 2-3): Hyemin Min, Yong-Uk Lee, Yhong-Hee Shim, and Ichiro Kawasaki. Autophagy of germ-granule components, pgl-1 and pgl-3, contributes to dna damage-induced germ cell apoptosis in c. elegans. PLOS Genetics, 15:e1008150, May 2019. URL: https://doi.org/10.1371/journal.pgen.1008150, doi:10.1371/journal.pgen.1008150. This article has 13 citations and is from a domain leading peer-reviewed journal.\n\n23. (min2016lossofpgl1 pages 5-6): Hyemin Min, Yhong-Hee Shim, and Ichiro Kawasaki. Loss of pgl-1 and pgl-3, members of a family of constitutive germ-granule components, promotes germline apoptosis in c. elegans. Journal of Cell Science, 129:341-353, Jan 2016. URL: https://doi.org/10.1242/jcs.174201, doi:10.1242/jcs.174201. This article has 22 citations and is from a domain leading peer-reviewed journal.\n\n24. (min2016lossofpgl1 pages 13-13): Hyemin Min, Yhong-Hee Shim, and Ichiro Kawasaki. Loss of pgl-1 and pgl-3, members of a family of constitutive germ-granule components, promotes germline apoptosis in c. elegans. Journal of Cell Science, 129:341-353, Jan 2016. URL: https://doi.org/10.1242/jcs.174201, doi:10.1242/jcs.174201. This article has 22 citations and is from a domain leading peer-reviewed journal.\n\n25. (min2019autophagyofgermgranule pages 18-19): Hyemin Min, Yong-Uk Lee, Yhong-Hee Shim, and Ichiro Kawasaki. Autophagy of germ-granule components, pgl-1 and pgl-3, contributes to dna damage-induced germ cell apoptosis in c. elegans. PLOS Genetics, 15:e1008150, May 2019. URL: https://doi.org/10.1371/journal.pgen.1008150, doi:10.1371/journal.pgen.1008150. This article has 13 citations and is from a domain leading peer-reviewed journal.\n\n26. (min2019autophagyofgermgranule pages 1-2): Hyemin Min, Yong-Uk Lee, Yhong-Hee Shim, and Ichiro Kawasaki. Autophagy of germ-granule components, pgl-1 and pgl-3, contributes to dna damage-induced germ cell apoptosis in c. elegans. PLOS Genetics, 15:e1008150, May 2019. URL: https://doi.org/10.1371/journal.pgen.1008150, doi:10.1371/journal.pgen.1008150. This article has 13 citations and is from a domain leading peer-reviewed journal.\n\n27. (kawasaki2004thepglfamily pages 3-4): Ichiro Kawasaki, Anahita Amiri, Yuan Fan, Nicole Meyer, Steve Dunkelbarger, Tomoko Motohashi, Takeshi Karashima, Olaf Bossinger, and Susan Strome. The pgl family proteins associate with germ granules and function redundantly in caenorhabditis elegans germline development sequence data from this article have been deposited with the ddbj/embl/genbank data libraries under accession nos. ab120729 and ab120730. Genetics, 167:645-661, Jun 2004. URL: https://doi.org/10.1534/genetics.103.023093, doi:10.1534/genetics.103.023093. This article has 164 citations and is from a domain leading peer-reviewed journal.\n\n28. (phillips2022germgranulesand pages 1-2): Carolyn M Phillips and Dustin L Updike. Germ granules and gene regulation in the caenorhabditis elegans germline. Genetics, Mar 2022. URL: https://doi.org/10.1093/genetics/iyab195, doi:10.1093/genetics/iyab195. This article has 56 citations and is from a domain leading peer-reviewed journal.\n\n29. (min2019autophagyofgermgranule pages 21-22): Hyemin Min, Yong-Uk Lee, Yhong-Hee Shim, and Ichiro Kawasaki. Autophagy of germ-granule components, pgl-1 and pgl-3, contributes to dna damage-induced germ cell apoptosis in c. elegans. PLOS Genetics, 15:e1008150, May 2019. URL: https://doi.org/10.1371/journal.pgen.1008150, doi:10.1371/journal.pgen.1008150. This article has 13 citations and is from a domain leading peer-reviewed journal.\n\n30. (kawasaki2004thepglfamily pages 10-12): Ichiro Kawasaki, Anahita Amiri, Yuan Fan, Nicole Meyer, Steve Dunkelbarger, Tomoko Motohashi, Takeshi Karashima, Olaf Bossinger, and Susan Strome. The pgl family proteins associate with germ granules and function redundantly in caenorhabditis elegans germline development sequence data from this article have been deposited with the ddbj/embl/genbank data libraries under accession nos. ab120729 and ab120730. Genetics, 167:645-661, Jun 2004. URL: https://doi.org/10.1534/genetics.103.023093, doi:10.1534/genetics.103.023093. This article has 164 citations and is from a domain leading peer-reviewed journal.\n\n31. (aoki2016pglgermgranule pages 5-6): Scott T. Aoki, Aaron M. Kershner, Craig A. Bingman, Marvin Wickens, and Judith Kimble. Pgl germ granule assembly protein is a base-specific, single-stranded rnase. Proceedings of the National Academy of Sciences, 113:1279-1284, Jan 2016. URL: https://doi.org/10.1073/pnas.1524400113, doi:10.1073/pnas.1524400113. This article has 28 citations and is from a highest quality peer-reviewed journal.\n\n32. (chenUnknownyearxiaonahuang1╪xuezhu pages 19-21): X Chen. Xiaona huang1╪, xuezhu feng2╪, yong-hong yan3╪, demin xu1, ke wang1, chengming zhu1, meng-qiu dong3, xinya huang1, shouhong guang1 and. Unknown journal, Unknown year.\n\n33. (chenUnknownyearxiaonahuang1╪xuezhu pages 4-7): X Chen. Xiaona huang1╪, xuezhu feng2╪, yong-hong yan3╪, demin xu1, ke wang1, chengming zhu1, meng-qiu dong3, xinya huang1, shouhong guang1 and. Unknown journal, Unknown year.\n", answer_reasoning='', has_successful_answer=True, total_cost=None, total_queries=None)]