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gene_id: SAHS1
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protein_description: 'RecName: Full=Secretory-abundant heat soluble protein 1 {ECO:0000303|PubMed:22937162};
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Precursor;'
gene_info: Name=SAHS1 {ECO:0000303|PubMed:22937162}; ORFNames=RvY_02423;
organism_full: Ramazzottius varieornatus (Water bear) (Tardigrade).
protein_family: Belongs to the Secretory-abundant heat soluble protein
protein_domains: Calycin. (IPR012674); Fatty_acid-bd. (IPR000463)
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Question

Gene Research for Functional Annotation

⚠️ CRITICAL: Gene/Protein Identification Context

BEFORE YOU BEGIN RESEARCH: You MUST verify you are researching the CORRECT gene/protein. Gene symbols can be ambiguous, especially for less well-characterized genes from non-model organisms.

Target Gene/Protein Identity (from UniProt):

• UniProt Accession: J7MFT5
• Protein Description: RecName: Full=Secretory-abundant heat soluble protein 1 {ECO:0000303|PubMed:22937162}; Short=SAHS1 {ECO:0000303|PubMed:22937162}; AltName: Full=Tardigrade-specific intrinsically disordered protein SAHS1 {ECO:0000305}; Short=TDP SAHS1 {ECO:0000305}; Flags: Precursor;
• Gene Information: Name=SAHS1 {ECO:0000303|PubMed:22937162}; ORFNames=RvY_02423;
• Organism (full): Ramazzottius varieornatus (Water bear) (Tardigrade).
• Protein Family: Belongs to the Secretory-abundant heat soluble protein
• Key Domains: Calycin. (IPR012674); Fatty_acid-bd. (IPR000463)

MANDATORY VERIFICATION STEPS:

1. Check if the gene symbol "SAHS1" matches the protein description above
2. Verify the organism is correct: Ramazzottius varieornatus (Water bear) (Tardigrade).
3. Check if protein family/domains align with what you find in literature
4. If you find literature for a DIFFERENT gene with the same or similar symbol, STOP

If Gene Symbol is Ambiguous or You Cannot Find Relevant Literature:

DO NOT PROCEED WITH RESEARCH ON A DIFFERENT GENE. Instead:
- State clearly: "The gene symbol 'SAHS1' is ambiguous or literature is limited for this specific protein"
- Explain what you found (e.g., "Found extensive literature on a different gene with the same symbol in a different organism")
- Describe the protein based ONLY on the UniProt information provided above
- Suggest that the protein function can be inferred from domain/family information

Research Target:

Please provide a comprehensive research report on the gene SAHS1 (gene ID: SAHS1, UniProt: J7MFT5) in RAMVA.

The research report should be a detailed narrative explaining the function, biological processes, and localization of the gene product. Citations should be given for all claims.

You should prioritize authoritative reviews and primary scientific literature when conducting research. You can supplement
this with annotations you find in gene/protein databases, but these can be outdated or inaccurate.

We are specifically interested in the primary function of the gene - for enzymes, what reaction is catalyzed, and what is the substrate specificity? For transporters, what is the substrate? For structural proteins or adapters, what is the broader structural role? For signaling molecules, what is the role in the pathway.

We are interested in where in or outside the cell the gene product carries out its function.

We are also interested in the signaling or biochemical pathways in which the gene functions. We are less interested in broad pleiotropic effects, except where these elucidate the precise role.

Include evidence where possible. We are interested in both experimental evidence as well as inference from structure, evolution, or bioinformatic analysis. Precise studies should be prioritized over high-throughput, where available.

Output

Question: You are an expert researcher providing comprehensive, well-cited information.

Provide detailed information focusing on:
1. Key concepts and definitions with current understanding
2. Recent developments and latest research (prioritize 2023-2024 sources)
3. Current applications and real-world implementations
4. Expert opinions and analysis from authoritative sources
5. Relevant statistics and data from recent studies

Format as a comprehensive research report with proper citations. Include URLs and publication dates where available.
Always prioritize recent, authoritative sources and provide specific citations for all major claims.

Gene Research for Functional Annotation

⚠️ CRITICAL: Gene/Protein Identification Context

BEFORE YOU BEGIN RESEARCH: You MUST verify you are researching the CORRECT gene/protein. Gene symbols can be ambiguous, especially for less well-characterized genes from non-model organisms.

Target Gene/Protein Identity (from UniProt):

• UniProt Accession: J7MFT5
• Protein Description: RecName: Full=Secretory-abundant heat soluble protein 1 {ECO:0000303|PubMed:22937162}; Short=SAHS1 {ECO:0000303|PubMed:22937162}; AltName: Full=Tardigrade-specific intrinsically disordered protein SAHS1 {ECO:0000305}; Short=TDP SAHS1 {ECO:0000305}; Flags: Precursor;
• Gene Information: Name=SAHS1 {ECO:0000303|PubMed:22937162}; ORFNames=RvY_02423;
• Organism (full): Ramazzottius varieornatus (Water bear) (Tardigrade).
• Protein Family: Belongs to the Secretory-abundant heat soluble protein
• Key Domains: Calycin. (IPR012674); Fatty_acid-bd. (IPR000463)

MANDATORY VERIFICATION STEPS:

1. Check if the gene symbol "SAHS1" matches the protein description above
2. Verify the organism is correct: Ramazzottius varieornatus (Water bear) (Tardigrade).
3. Check if protein family/domains align with what you find in literature
4. If you find literature for a DIFFERENT gene with the same or similar symbol, STOP

If Gene Symbol is Ambiguous or You Cannot Find Relevant Literature:

DO NOT PROCEED WITH RESEARCH ON A DIFFERENT GENE. Instead:
- State clearly: "The gene symbol 'SAHS1' is ambiguous or literature is limited for this specific protein"
- Explain what you found (e.g., "Found extensive literature on a different gene with the same symbol in a different organism")
- Describe the protein based ONLY on the UniProt information provided above
- Suggest that the protein function can be inferred from domain/family information

Research Target:

Please provide a comprehensive research report on the gene SAHS1 (gene ID: SAHS1, UniProt: J7MFT5) in RAMVA.

The research report should be a detailed narrative explaining the function, biological processes, and localization of the gene product. Citations should be given for all claims.

You should prioritize authoritative reviews and primary scientific literature when conducting research. You can supplement
this with annotations you find in gene/protein databases, but these can be outdated or inaccurate.

We are specifically interested in the primary function of the gene - for enzymes, what reaction is catalyzed, and what is the substrate specificity? For transporters, what is the substrate? For structural proteins or adapters, what is the broader structural role? For signaling molecules, what is the role in the pathway.

We are interested in where in or outside the cell the gene product carries out its function.

We are also interested in the signaling or biochemical pathways in which the gene functions. We are less interested in broad pleiotropic effects, except where these elucidate the precise role.

Include evidence where possible. We are interested in both experimental evidence as well as inference from structure, evolution, or bioinformatic analysis. Precise studies should be prioritized over high-throughput, where available.

Research report: SAHS1 (RvSAHS1; UniProt J7MFT5) from Ramazzottius varieornatus

Executive summary

Secretory-abundant heat soluble protein 1 (SAHS1; RvSAHS1) is a tardigrade-specific, secreted, heat-soluble protein family member that contributes to desiccation/anhydrobiosis tolerance primarily by protecting extracellular and membrane-containing structures during drying. Mechanistically, RvSAHS1 is unusual among “tardigrade disordered proteins” because it adopts an ordered calycin/fatty-acid-binding-protein (FABP)-like β-barrel in hydrated conditions, with a large internal cavity and two putative ligand-binding sites, and it can undergo dehydration-associated structural transitions and higher-order assembly (mesh/filaments) that correlate with protective effects. The most recent (2023–2024) advances include (i) in vivo localization/expression mapping of SAHS1 in tardigrades using the TardiVec toolkit and (ii) demonstration that purified SAHS proteins (including RvSAHS1) can be used as exogenous stabilizers to markedly improve desiccation survival of bacteria and preserve liposome integrity, highlighting translational potential for dry preservation. (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins pages 3-5, tanaka2023invivoexpression pages 4-6, tanaka2023invivoexpression pages 3-4)

Identity verification (critical)

The literature retrieved consistently uses SAHS1 to refer to Secretory Abundant Heat Soluble protein 1 from the eutardigrade Ramazzottius varieornatus (often denoted RvSAHS1). The family was defined as signal-peptide-containing secreted heat-soluble proteins (SAHS) in R. varieornatus; SAHS1 was one of the experimentally analyzed members. Subsequent structural biology papers explicitly determined the structure of RvSAHS1 and recent functional work assays RvSAHS1 directly. No conflicting “SAHS1” from other organisms was encountered in the evidence set used here. (yamaguchi2012twonovelheatsoluble pages 3-5, fukuda2017structuralinsightsinto pages 1-4)

1) Key concepts and definitions (current understanding)

Anhydrobiosis and desiccation tolerance

Anhydrobiosis refers to a reversible ametabolic state that permits survival under near-complete water loss; in tardigrades this state is associated with tolerance to multiple stresses encountered during dehydration/rehydration. SAHS proteins were originally proposed as candidate anhydrobiosis factors because they are abundant, heat-soluble, tardigrade-specific, and (critically) localized to secretory/extracellular compartments where dehydration threatens membranes and extracellular structures. (yamaguchi2012twonovelheatsoluble pages 3-5, fukuda2017structuralinsightsinto pages 1-4)

SAHS proteins and “tardigrade-specific protective proteins”

SAHS (Secretory Abundant Heat Soluble) proteins were identified alongside CAHS (Cytoplasmic Abundant Heat Soluble) proteins as two novel tardigrade-specific heat-soluble families. While CAHS proteins were characterized as highly unstructured in hydrated conditions, SAHS1 was reported to be β-structure rich when hydrated and capable of shifting toward α-helical structure under dehydration-mimicking conditions (e.g., TFE). This “structural plasticity” is a recurring motif in desiccation-protective proteins (often discussed by analogy to LEA proteins), but SAHS proteins are distinct from LEA proteins at the sequence level. (yamaguchi2012twonovelheatsoluble pages 3-5)

Calycin/FABP-like fold and internal cavity

High-resolution structures show RvSAHS1 adopts a β-barrel architecture similar to mammalian FABPs (within the calycin superfamily), featuring a portal/entry region and a large internal cavity. This is important for functional annotation because it supports hypotheses involving (i) binding/partitioning of small hydrophobic or amphipathic ligands and/or (ii) cavity water/solute dynamics as a trigger for dehydration-induced conformational change. (fukuda2017structuralinsightsinto pages 9-11, fukuda2017structuralinsightsinto pages 1-4)

2) Recent developments and latest research (prioritizing 2023–2024)

2.1 In vivo expression and localization mapping enabled by TardiVec (2023)

A major barrier in tardigrade cell biology has been reliance on heterologous systems. Tanaka et al. developed TardiVec, a plasmid-based transient expression system using promoters from R. varieornatus, enabling live imaging and tissue-specific expression studies. Using SAHS-family promoters and SAHS1 fusion constructs, they reported that SAHS proteins (including SAHS1) are expressed exclusively in storage cells—tardigrade-specific free-floating cells in the body cavity—and SAHS1-mEGFP localizes to vesicle-like structures in these cells; in some animals signal spread into the body cavity, consistent with secretion. Storage-cell RNA-seq showed SAHS-family transcripts enriched by approximately ~5–20× relative to whole-body samples, supporting cell-type specialization. These results refine localization beyond earlier human-cell secretion assays and argue that SAHS1 action in vivo is linked to storage-cell vesicles and extracellular/body-cavity deployment. (Publication date: Jan 2023; URL: https://doi.org/10.1073/pnas.2216739120) (tanaka2023invivoexpression pages 4-6, tanaka2023invivoexpression pages 3-4, tanaka2023invivoexpression pages 2-3)

2.2 SAHS proteins as practical desiccation protectants for membranes and cells (2024)

Lim et al. (2024) directly tested SAHS proteins (including RvSAHS1) for protection of liposomes and bacteria during drying/rehydration. Key quantitative findings include:

• Liposomes: drying/rehydration of POPC liposomes without excipients increased mean diameter from ~70 nm to ~350 nm, consistent with fusion/aggregation; with 10 mg/mL SAHS proteins, fusion was greatly reduced and protection persisted at lower concentrations. Trehalose was comparably protective, while BSA was less protective in these membrane assays. (lim2024tardigradesecretoryproteins pages 3-5, lim2024tardigradesecretoryproteins pages 6-7)
• Bacteria: extracellular addition of RvSAHS1 produced >10-fold improvement in E. coli desiccation survival (with protection still significant at 0.1 mg/mL). For Rhizobium tropici, SAHS proteins increased survival by about ~40-fold at 0.5 mg/mL, compared with 16-fold for trehalose and 4.2-fold for BSA. Intracellular expression in E. coli did not clearly enhance survival, supporting an extracellular mode of action consistent with secretion. (Publication date: May 2024; URL: https://doi.org/10.1038/s42003-024-06336-w) (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins pages 3-5)

Mechanistically, Lim et al. propose that dehydration-driven removal of water/solutes from the SAHS cavity destabilizes the β-sheet fold and promotes a structural shift/assembly state that physically protects membrane-containing structures; this connects structural biology (ordered β-barrel) to function (membrane/cell preservation). (lim2024tardigradesecretoryproteins pages 1-3, lim2024tardigradesecretoryproteins pages 6-7)

2.3 Updated evolutionary context for SAHS gene family (2024)

Fleming et al. (2024) generated phylogenies for multiple tardigrade extremotolerance-associated families including SAHS. They report 29 SAHS sequences across 13 genera and infer extensive lineage-specific duplication histories. In particular, they identify a Ramazzottius SAHS clade (e.g., SAHS2 and SAHS7–12) with six independent duplications and note broader patterns of independent duplications and differential retention across families. These analyses support a view that SAHS family diversification is recurrent in tardigrade evolution and potentially tied to independent adaptations to aridity/limnoterrestrial lifestyles; however, internal SAHS phylogenetic resolution remains limited and nomenclature is not yet fully reconciled with phylogeny. (Publication date: Nov 2024; URL: https://doi.org/10.1093/gbe/evad217) (fleming2024theevolutionof pages 1-2, fleming2024theevolutionof pages 7-9)

3) Functional annotation of SAHS1: function, processes, and localization

3.1 Cellular and organismal localization

Multiple independent approaches support that SAHS1 is secreted and acts in secretory/extracellular compartments:

• Signal peptide / secretion prediction: SAHS proteins were defined in part by N-terminal secretory signals and TargetP prediction of secretion for SAHS1. (yamaguchi2012twonovelheatsoluble pages 3-5)
• Heterologous secretion assay (human cells): SAHS1-GFP was detected by immunoblot in the culture medium, with minimal intracellular accumulation (interpreted as transient retention in ER/Golgi). (yamaguchi2012twonovelheatsoluble pages 3-5)
• In vivo localization in tardigrades (TardiVec): SAHS promoters drive expression exclusively in storage cells; SAHS1-mEGFP localizes to vesicle-like structures and can appear in the body cavity, consistent with deployment as a secretory product. (tanaka2023invivoexpression pages 4-6, tanaka2023invivoexpression pages 3-4, tanaka2023invivoexpression pages 2-3)

Collectively, these findings support a primary biological role in extracellular/body-cavity protection and/or protection of secretory vesicles/organelles, rather than cytosolic or nuclear protection (which is more typical of CAHS proteins). (yamaguchi2012twonovelheatsoluble pages 3-5, tanaka2023invivoexpression pages 3-4)

3.2 Structure, domains, and defining molecular features

Fukuda et al. solved crystal structures of RvSAHS1 and found:

• A calycin/FABP-like β-barrel architecture with a helix-turn-helix “lid” region and portal loops that show flexibility (B-factors), implicating dynamic control of cavity access. (fukuda2017structuralinsightsinto pages 9-11, fukuda2017structuralinsightsinto pages 6-9)
• Distinctive hydrophilic, bulky residues within/near the barrel forming hydrogen-bond networks (e.g., interactions among H72/H83/Y117/Y141/Y152/R161), proposed to contribute to heat solubility and structural preservation under dehydrating conditions. (fukuda2017structuralinsightsinto pages 9-11, fukuda2017structuralinsightsinto pages 6-9)
• Evidence for oligomerization behavior in solution (SEC and SDS-PAGE peaks interpreted as monomer/dimer/oligomer states). (fukuda2017structuralinsightsinto pages 11-14)

This ordered fold is consistent with SAHS1 being assigned to calycin/fatty-acid binding domain families in protein-domain databases (as also echoed by comparative analyses in later work). (fukuda2017structuralinsightsinto pages 1-4, lim2024tardigradesecretoryproteins pages 1-3)

3.3 Ligand binding: current evidence and limits

RvSAHS1 contains two putative ligand-binding sites:

• In the dimeric structure, crystallographic electron density near a Mg ion was tentatively modeled as heptanoic acid (and acetate), consistent with the notion that recombinant FABPs can co-purify with endogenous fatty acids in E. coli. The authors emphasize that these may represent parts of longer fatty acids and that identification of physiological ligands remains future work. (fukuda2017structuralinsightsinto pages 6-9)
• Conserved residues around binding sites include R161/Y163 and K150, and additional conserved residues suggest a second conserved site (LBS2). (fukuda2017structuralinsightsinto pages 9-11, fukuda2017structuralinsightsinto pages 11-14)

However, the most recent comparative sequence analysis indicates substantial variation in cavity-forming residues across the 13 R. varieornatus SAHS paralogs, which argues against a single, universally shared ligand (e.g., “a fatty acid”) across all SAHS proteins, although some retain carboxyl-interacting residues typical of FABPs. Thus, ligand binding remains a plausible but not yet fully resolved aspect of SAHS1 function. (lim2024tardigradesecretoryproteins pages 6-7)

3.4 Dehydration-linked structural transitions and assembly

Evidence for dehydration-associated conformational/assembly behavior includes:

• CD spectroscopy (family discovery): SAHS1 is β-rich when hydrated (CD minimum near 215 nm) and shifts toward α-helical spectra under water-deficit mimic (TFE). (yamaguchi2012twonovelheatsoluble pages 3-5)
• CD + MD + EM (2024): SAHS proteins showed increasing α-helical content with increasing TFE, with reported helical content increasing from ~10% to ~40%. MD simulations of RvSAHS1 under desolvation conditions show β-content dropping (~50%→~3%) and helix content increasing (~7%→~20%). Dried SAHS1 can form fibrous mesh/filament-like structures, consistent with formation of a protective matrix in low-water environments. (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins pages 6-7)

These results support a model in which the β-barrel structure is stable in hydrated conditions but can reorganize under dehydration into conformations/assemblies that physically stabilize membranes and extracellular structures. (lim2024tardigradesecretoryproteins pages 1-3, lim2024tardigradesecretoryproteins pages 6-7)

4) Current applications and real-world implementations

The most concrete “real-world” application demonstrated to date is dry preservation/stabilization of biological structures using purified SAHS proteins:

• Membrane stabilization: SAHS proteins reduce drying-induced liposome fusion/aggregation, preserving nanoscale size distribution after rehydration; this suggests potential use in stabilizing liposomal formulations or membrane-based biologics during drying or storage. (lim2024tardigradesecretoryproteins pages 6-7, lim2024tardigradesecretoryproteins media 7cd986d1)
• Cell preservation: Extracellular SAHS application boosts desiccation survival of bacteria (E. coli, R. tropici) with fold-improvements exceeding common protein controls (BSA) and comparable or better than trehalose under some conditions, suggesting utility in dry storage of microbial inoculants or engineered strains. (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins media 7cd986d1, lim2024tardigradesecretoryproteins media caaecc4a)

Importantly, intracellular expression in E. coli was not clearly beneficial in these assays, which is consistent with SAHS proteins’ predicted/observed secretory localization and implies that applications should focus on extracellular formulations rather than cytosolic engineering in bacteria (unless co-engineered secretion/localization systems are implemented). (lim2024tardigradesecretoryproteins pages 3-5, lim2024tardigradesecretoryproteins pages 6-7)

5) Expert opinions and analysis (authoritative sources)

• Original functional framing (2012): SAHS proteins were defined as secretory proteins and proposed to protect extracellular components/secretory compartments. The authors explicitly noted that SAHS1 did not accumulate around plasma membranes in human-cell expression assays, interpreting this as low membrane affinity and suggesting membrane protection might not be the primary role—an early view that is now partially revised by later functional data showing strong membrane-structure protection in vitro when SAHS is provided extracellularly at sufficient concentration. (yamaguchi2012twonovelheatsoluble pages 5-6, lim2024tardigradesecretoryproteins pages 3-5)
• Structural interpretation (2017): The RvSAHS1 structure supports classification as a new FABP-like family with unique cavity chemistry (hydrophilic/bulky residues and H-bond networks) and portal-region features (short αII; fewer basic residues) consistent with a diffusion-mediated ligand transfer mechanism rather than collisional membrane transfer, implying that ligand binding/partitioning may occur without strong membrane association. (fukuda2017structuralinsightsinto pages 9-11, fukuda2017structuralinsightsinto pages 6-9)
• Mechanism-to-application synthesis (2024): Lim et al. explicitly connect cavity desolvation and β→α transitions to membrane/cell protection, and propose that diversification across 13 SAHS paralogs in R. varieornatus could provide graded stability thresholds across dehydration severities—an evolutionary/biophysical rationale for gene-family expansion beyond simple redundancy. (lim2024tardigradesecretoryproteins pages 6-7)

6) Statistics and quantitative data (recent studies emphasized)

Key quantitative results relevant for functional annotation and application include:

• Storage-cell enrichment of SAHS transcripts: ~5–20× enrichment in storage-cell RNA-seq vs whole-body (TardiVec study). (tanaka2023invivoexpression pages 3-4)
• Liposome protection: mean diameter change upon drying/rehydration from ~70 nm to ~350 nm without protectant; 10 mg/mL SAHS greatly reduced fusion (DLS). (lim2024tardigradesecretoryproteins pages 6-7, lim2024tardigradesecretoryproteins media 7cd986d1)
• Bacterial desiccation survival: RvSAHS1 provides >10-fold E. coli survival improvement; SAHS proteins provide ~40-fold R. tropici survival improvement at 0.5 mg/mL, versus 16-fold for trehalose and 4.2-fold for BSA; protection detectable at 0.1 mg/mL. (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins pages 3-5, lim2024tardigradesecretoryproteins media caaecc4a)
• Secondary structure changes under dehydration mimic: helical content reported increasing from ~10% to ~40% with TFE (CD) and MD showing β decreasing ~50%→~3% and helix increasing ~7%→~20% in simulation. (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins pages 6-7)
• Gene family size: R. varieornatus encodes 13 SAHS proteins (RvSAHS1–13). (lim2024tardigradesecretoryproteins pages 6-7)
• Broader family sampling: 29 SAHS sequences across 13 genera in recent phylogenetic analysis, with inferred multiple independent duplications (e.g., six independent duplications in a Ramazzottius clade). (fleming2024theevolutionof pages 1-2, fleming2024theevolutionof pages 7-9)

Figure-based evidence (quantitative)

Lim et al. provide direct quantitative plots for both liposome stabilization and bacterial survival improvements with SAHS proteins, including RvSAHS1. These figures are key visual evidence supporting the claim that SAHS1 is an effective extracellular desiccation protectant for membrane-containing structures. (lim2024tardigradesecretoryproteins media 7cd986d1, lim2024tardigradesecretoryproteins media caaecc4a)

Evidence map (summary table)

Table: This table summarizes the main functional annotation evidence for Ramazzottius varieornatus SAHS1 (UniProt J7MFT5), integrating localization, structure, ligand-binding hypotheses, dehydration behavior, protective phenotypes, and evolutionary context. It is designed as a compact evidence map distinguishing direct experiments from inference.

Gaps and recommended next experiments (limits of current knowledge)

• Physiological ligand identity and binding constants for RvSAHS1 remain unresolved: crystallography suggests carboxylate-containing ligands can occupy cavity sites, but the physiological ligand(s) and binding affinities have not been conclusively determined in the evidence reviewed here. (fukuda2017structuralinsightsinto pages 6-9, lim2024tardigradesecretoryproteins pages 6-7)
• In vivo SAHS1-specific necessity/sufficiency in R. varieornatus remains incompletely established: the strongest direct functional demonstrations are currently exogenous protection assays; genetic loss-of-function in R. varieornatus specifically would more directly connect SAHS1 to organismal anhydrobiosis. (fukuda2017structuralinsightsinto pages 1-4, lim2024tardigradesecretoryproteins pages 3-5)

Key references (publication date + URL)

• Yamaguchi A. et al. (Aug 2012). “Two Novel Heat-Soluble Protein Families Abundantly Expressed in an Anhydrobiotic Tardigrade.” PLoS ONE. https://doi.org/10.1371/journal.pone.0044209 (yamaguchi2012twonovelheatsoluble pages 3-5)
• Fukuda Y. et al. (Aug 2017). “Structural insights into a secretory abundant heat‐soluble protein from an anhydrobiotic tardigrade, Ramazzottius varieornatus.” FEBS Letters. https://doi.org/10.1002/1873-3468.12752 (fukuda2017structuralinsightsinto pages 9-11, fukuda2017structuralinsightsinto pages 6-9)
• Tanaka S. et al. (Jan 2023). “In vivo expression vector derived from anhydrobiotic tardigrade genome enables live imaging in Eutardigrada.” PNAS. https://doi.org/10.1073/pnas.2216739120 (tanaka2023invivoexpression pages 4-6, tanaka2023invivoexpression pages 3-4, tanaka2023invivoexpression pages 2-3)
• Lim S. et al. (May 2024). “Tardigrade secretory proteins protect biological structures from desiccation.” Communications Biology. https://doi.org/10.1038/s42003-024-06336-w (lim2024tardigradesecretoryproteins pages 5-6, lim2024tardigradesecretoryproteins pages 3-5, lim2024tardigradesecretoryproteins media 7cd986d1)
• Fleming JF. et al. (Nov 2024). “The Evolution of Temperature and Desiccation-Related Protein Families in Tardigrada Reveals a Complex Acquisition of Extremotolerance.” Genome Biology and Evolution. https://doi.org/10.1093/gbe/evad217 (fleming2024theevolutionof pages 1-2, fleming2024theevolutionof pages 7-9)

References

1. (lim2024tardigradesecretoryproteins pages 5-6): Samuel Lim, Charles B. Reilly, Zeina Barghouti, Benedetto Marelli, Jeffrey C. Way, and Pamela A. Silver. Tardigrade secretory proteins protect biological structures from desiccation. Communications Biology, May 2024. URL: https://doi.org/10.1038/s42003-024-06336-w, doi:10.1038/s42003-024-06336-w. This article has 17 citations and is from a peer-reviewed journal.

2. (lim2024tardigradesecretoryproteins pages 3-5): Samuel Lim, Charles B. Reilly, Zeina Barghouti, Benedetto Marelli, Jeffrey C. Way, and Pamela A. Silver. Tardigrade secretory proteins protect biological structures from desiccation. Communications Biology, May 2024. URL: https://doi.org/10.1038/s42003-024-06336-w, doi:10.1038/s42003-024-06336-w. This article has 17 citations and is from a peer-reviewed journal.

3. (tanaka2023invivoexpression pages 4-6): Sae Tanaka, Kazuhiro Aoki, and Kazuharu Arakawa. In vivo expression vector derived from anhydrobiotic tardigrade genome enables live imaging in eutardigrada. Proceedings of the National Academy of Sciences, Jan 2023. URL: https://doi.org/10.1073/pnas.2216739120, doi:10.1073/pnas.2216739120. This article has 27 citations and is from a highest quality peer-reviewed journal.

4. (tanaka2023invivoexpression pages 3-4): Sae Tanaka, Kazuhiro Aoki, and Kazuharu Arakawa. In vivo expression vector derived from anhydrobiotic tardigrade genome enables live imaging in eutardigrada. Proceedings of the National Academy of Sciences, Jan 2023. URL: https://doi.org/10.1073/pnas.2216739120, doi:10.1073/pnas.2216739120. This article has 27 citations and is from a highest quality peer-reviewed journal.

5. (yamaguchi2012twonovelheatsoluble pages 3-5): Ayami Yamaguchi, Sae Tanaka, Shiho Yamaguchi, Hirokazu Kuwahara, Chizuko Takamura, Shinobu Imajoh-Ohmi, Daiki D. Horikawa, Atsushi Toyoda, Toshiaki Katayama, Kazuharu Arakawa, Asao Fujiyama, Takeo Kubo, and Takekazu Kunieda. Two novel heat-soluble protein families abundantly expressed in an anhydrobiotic tardigrade. PLoS ONE, 7:e44209, Aug 2012. URL: https://doi.org/10.1371/journal.pone.0044209, doi:10.1371/journal.pone.0044209. This article has 195 citations and is from a peer-reviewed journal.

6. (fukuda2017structuralinsightsinto pages 1-4): Yohta Fukuda, Yoshimasa Miura, Eiichi Mizohata, and Tsuyoshi Inoue. Structural insights into a secretory abundant heat‐soluble protein from an anhydrobiotic tardigrade, ramazzottius varieornatus. FEBS Letters, 591:2458-2469, Aug 2017. URL: https://doi.org/10.1002/1873-3468.12752, doi:10.1002/1873-3468.12752. This article has 37 citations and is from a peer-reviewed journal.

7. (fukuda2017structuralinsightsinto pages 9-11): Yohta Fukuda, Yoshimasa Miura, Eiichi Mizohata, and Tsuyoshi Inoue. Structural insights into a secretory abundant heat‐soluble protein from an anhydrobiotic tardigrade, ramazzottius varieornatus. FEBS Letters, 591:2458-2469, Aug 2017. URL: https://doi.org/10.1002/1873-3468.12752, doi:10.1002/1873-3468.12752. This article has 37 citations and is from a peer-reviewed journal.

8. (tanaka2023invivoexpression pages 2-3): Sae Tanaka, Kazuhiro Aoki, and Kazuharu Arakawa. In vivo expression vector derived from anhydrobiotic tardigrade genome enables live imaging in eutardigrada. Proceedings of the National Academy of Sciences, Jan 2023. URL: https://doi.org/10.1073/pnas.2216739120, doi:10.1073/pnas.2216739120. This article has 27 citations and is from a highest quality peer-reviewed journal.

9. (lim2024tardigradesecretoryproteins pages 6-7): Samuel Lim, Charles B. Reilly, Zeina Barghouti, Benedetto Marelli, Jeffrey C. Way, and Pamela A. Silver. Tardigrade secretory proteins protect biological structures from desiccation. Communications Biology, May 2024. URL: https://doi.org/10.1038/s42003-024-06336-w, doi:10.1038/s42003-024-06336-w. This article has 17 citations and is from a peer-reviewed journal.

10. (lim2024tardigradesecretoryproteins pages 1-3): Samuel Lim, Charles B. Reilly, Zeina Barghouti, Benedetto Marelli, Jeffrey C. Way, and Pamela A. Silver. Tardigrade secretory proteins protect biological structures from desiccation. Communications Biology, May 2024. URL: https://doi.org/10.1038/s42003-024-06336-w, doi:10.1038/s42003-024-06336-w. This article has 17 citations and is from a peer-reviewed journal.

11. (fleming2024theevolutionof pages 1-2): James F Fleming, Davide Pisani, and Kazuharu Arakawa. The evolution of temperature and desiccation-related protein families in tardigrada reveals a complex acquisition of extremotolerance. Genome Biology and Evolution, Nov 2024. URL: https://doi.org/10.1093/gbe/evad217, doi:10.1093/gbe/evad217. This article has 21 citations and is from a domain leading peer-reviewed journal.

12. (fleming2024theevolutionof pages 7-9): James F Fleming, Davide Pisani, and Kazuharu Arakawa. The evolution of temperature and desiccation-related protein families in tardigrada reveals a complex acquisition of extremotolerance. Genome Biology and Evolution, Nov 2024. URL: https://doi.org/10.1093/gbe/evad217, doi:10.1093/gbe/evad217. This article has 21 citations and is from a domain leading peer-reviewed journal.

13. (fukuda2017structuralinsightsinto pages 6-9): Yohta Fukuda, Yoshimasa Miura, Eiichi Mizohata, and Tsuyoshi Inoue. Structural insights into a secretory abundant heat‐soluble protein from an anhydrobiotic tardigrade, ramazzottius varieornatus. FEBS Letters, 591:2458-2469, Aug 2017. URL: https://doi.org/10.1002/1873-3468.12752, doi:10.1002/1873-3468.12752. This article has 37 citations and is from a peer-reviewed journal.

14. (fukuda2017structuralinsightsinto pages 11-14): Yohta Fukuda, Yoshimasa Miura, Eiichi Mizohata, and Tsuyoshi Inoue. Structural insights into a secretory abundant heat‐soluble protein from an anhydrobiotic tardigrade, ramazzottius varieornatus. FEBS Letters, 591:2458-2469, Aug 2017. URL: https://doi.org/10.1002/1873-3468.12752, doi:10.1002/1873-3468.12752. This article has 37 citations and is from a peer-reviewed journal.

15. (lim2024tardigradesecretoryproteins media 7cd986d1): Samuel Lim, Charles B. Reilly, Zeina Barghouti, Benedetto Marelli, Jeffrey C. Way, and Pamela A. Silver. Tardigrade secretory proteins protect biological structures from desiccation. Communications Biology, May 2024. URL: https://doi.org/10.1038/s42003-024-06336-w, doi:10.1038/s42003-024-06336-w. This article has 17 citations and is from a peer-reviewed journal.

16. (lim2024tardigradesecretoryproteins media caaecc4a): Samuel Lim, Charles B. Reilly, Zeina Barghouti, Benedetto Marelli, Jeffrey C. Way, and Pamela A. Silver. Tardigrade secretory proteins protect biological structures from desiccation. Communications Biology, May 2024. URL: https://doi.org/10.1038/s42003-024-06336-w, doi:10.1038/s42003-024-06336-w. This article has 17 citations and is from a peer-reviewed journal.

17. (yamaguchi2012twonovelheatsoluble pages 5-6): Ayami Yamaguchi, Sae Tanaka, Shiho Yamaguchi, Hirokazu Kuwahara, Chizuko Takamura, Shinobu Imajoh-Ohmi, Daiki D. Horikawa, Atsushi Toyoda, Toshiaki Katayama, Kazuharu Arakawa, Asao Fujiyama, Takeo Kubo, and Takekazu Kunieda. Two novel heat-soluble protein families abundantly expressed in an anhydrobiotic tardigrade. PLoS ONE, 7:e44209, Aug 2012. URL: https://doi.org/10.1371/journal.pone.0044209, doi:10.1371/journal.pone.0044209. This article has 195 citations and is from a peer-reviewed journal.

18. (tanaka2023invivoexpression pages 6-7): Sae Tanaka, Kazuhiro Aoki, and Kazuharu Arakawa. In vivo expression vector derived from anhydrobiotic tardigrade genome enables live imaging in eutardigrada. Proceedings of the National Academy of Sciences, Jan 2023. URL: https://doi.org/10.1073/pnas.2216739120, doi:10.1073/pnas.2216739120. This article has 27 citations and is from a highest quality peer-reviewed journal.

19. (fleming2024theevolutionof pages 6-7): James F Fleming, Davide Pisani, and Kazuharu Arakawa. The evolution of temperature and desiccation-related protein families in tardigrada reveals a complex acquisition of extremotolerance. Genome Biology and Evolution, Nov 2024. URL: https://doi.org/10.1093/gbe/evad217, doi:10.1093/gbe/evad217. This article has 21 citations and is from a domain leading peer-reviewed journal.

Citations

1. yamaguchi2012twonovelheatsoluble pages 3-5
2. fukuda2017structuralinsightsinto pages 11-14
3. fukuda2017structuralinsightsinto pages 6-9
4. lim2024tardigradesecretoryproteins pages 6-7
5. tanaka2023invivoexpression pages 3-4
6. lim2024tardigradesecretoryproteins pages 5-6
7. lim2024tardigradesecretoryproteins pages 3-5
8. tanaka2023invivoexpression pages 4-6
9. fukuda2017structuralinsightsinto pages 1-4
10. fukuda2017structuralinsightsinto pages 9-11
11. tanaka2023invivoexpression pages 2-3
12. lim2024tardigradesecretoryproteins pages 1-3
13. fleming2024theevolutionof pages 1-2
14. fleming2024theevolutionof pages 7-9
15. yamaguchi2012twonovelheatsoluble pages 5-6
16. tanaka2023invivoexpression pages 6-7
17. fleming2024theevolutionof pages 6-7
18. https://doi.org/10.1073/pnas.2216739120
19. https://doi.org/10.1038/s42003-024-06336-w
20. https://doi.org/10.1093/gbe/evad217
21. https://doi.org/10.1371/journal.pone.0044209;
22. https://doi.org/10.1002/1873-3468.12752
23. https://doi.org/10.1002/1873-3468.12752;
24. https://doi.org/10.1093/gbe/evad217;
25. https://doi.org/10.1371/journal.pone.0044209
26. https://doi.org/10.1038/s42003-024-06336-w,
27. https://doi.org/10.1073/pnas.2216739120,
28. https://doi.org/10.1371/journal.pone.0044209,
29. https://doi.org/10.1002/1873-3468.12752,
30. https://doi.org/10.1093/gbe/evad217,