--- provider: openscientist model: openscientist-autonomous cached: false start_time: '2026-07-08T14:24:03.993135' end_time: '2026-07-08T14:39:19.963619' duration_seconds: 915.97 template_file: templates/gene_hypothesis_deep_research.md template_variables: organism: WHEAT gene: A0A3B6RKV1 gene_symbol: A0A3B6RKV1 uniprot_accession: A0A3B6RKV1 taxon_id: NCBITaxon:4565 taxon_label: Triticum aestivum focus_type: computational_prediction hypothesis_slug: prediction-jmj22-developmental-roles hypothesis_text: 'ProtNLM2 predicts several Arabidopsis JMJ22-derived developmental roles for the Triticum aestivum JmjC-domain protein A0A3B6RKV1 -- regulation of photomorphogenesis (GO:0010099), gibberellin-mediated signaling (GO:0010476), response to red light (GO:0010114), and positive regulation of seed germination (GO:0010030) -- by orthology to Arabidopsis JMJ22/PKDM7D. To keep the analysis tractable, focus on one decisive question: is A0A3B6RKV1 a catalytically competent JmjC histone demethylase (does it retain the JmjC Fe(II)- and 2-oxoglutarate-coordinating active-site residues), and which KDM/JARID subfamily does it belong to. On that basis, briefly assess whether the Arabidopsis-JMJ22-specific developmental roles can be transferred to the wheat protein, or whether such transfer is unsupported.' term_context: '- Term: regulation of photomorphogenesis (GO:0010099)' reference_context: No specific reference context supplied. source_file: '' source_selector: '' source_context_yaml: "hypothesis: 'ProtNLM2 predicts several Arabidopsis JMJ22-derived\ \ developmental roles for the Triticum\n aestivum JmjC-domain protein A0A3B6RKV1\ \ -- regulation of photomorphogenesis (GO:0010099), gibberellin-mediated\n signaling\ \ (GO:0010476), response to red light (GO:0010114), and positive regulation of\ \ seed germination\n (GO:0010030) -- by orthology to Arabidopsis JMJ22/PKDM7D.\ \ To keep the analysis tractable, focus on one\n decisive question: is A0A3B6RKV1\ \ a catalytically competent JmjC histone demethylase (does it retain\n the JmjC\ \ Fe(II)- and 2-oxoglutarate-coordinating active-site residues), and which KDM/JARID\ \ subfamily\n does it belong to. On that basis, briefly assess whether the Arabidopsis-JMJ22-specific\ \ developmental\n roles can be transferred to the wheat protein, or whether such\ \ transfer is unsupported.'\nfocus_type: computational_prediction\nterm_id: GO:0010099\n\ term_label: regulation of photomorphogenesis\ncontext: []\nreference_id: []" provider_config: timeout: 3600 max_retries: 3 parameters: allowed_domains: [] max_iterations: 3 use_hypotheses: false investigation_mode: autonomous poll_interval: 30 timeout: 7200 save_artifacts: true artifact_max_bytes: 5242880 artifact_count: 2 artifact_sources: openscientist_artifacts_zip: 2 artifacts: - filename: final_report.html path: openscientist_artifacts/final_report.html media_type: text/html source: openscientist_artifacts_zip data_storage_id: null description: OpenScientist final report - filename: final_report.pdf path: openscientist_artifacts/final_report.pdf media_type: application/pdf source: openscientist_artifacts_zip data_storage_id: null description: OpenScientist final report --- ## Question # AIGR Gene Hypothesis Deep Research You are evaluating one focused gene curation hypothesis for AI Gene Review. This is not a general gene overview. Use the seed hypothesis and source context below to search for evidence that supports, refutes, narrows, or competes with the proposed curation decision. ## Target Gene - **Organism code:** WHEAT - **Taxon:** Triticum aestivum (NCBITaxon:4565) - **Gene directory:** A0A3B6RKV1 - **Gene symbol:** A0A3B6RKV1 - **UniProt accession:** A0A3B6RKV1 ## Focus - **Focus type:** computational_prediction - **Hypothesis slug:** prediction-jmj22-developmental-roles - **Source file:** - **Source selector:** ## Seed Hypothesis ProtNLM2 predicts several Arabidopsis JMJ22-derived developmental roles for the Triticum aestivum JmjC-domain protein A0A3B6RKV1 -- regulation of photomorphogenesis (GO:0010099), gibberellin-mediated signaling (GO:0010476), response to red light (GO:0010114), and positive regulation of seed germination (GO:0010030) -- by orthology to Arabidopsis JMJ22/PKDM7D. To keep the analysis tractable, focus on one decisive question: is A0A3B6RKV1 a catalytically competent JmjC histone demethylase (does it retain the JmjC Fe(II)- and 2-oxoglutarate-coordinating active-site residues), and which KDM/JARID subfamily does it belong to. On that basis, briefly assess whether the Arabidopsis-JMJ22-specific developmental roles can be transferred to the wheat protein, or whether such transfer is unsupported. ## Term and Decision Context - Term: regulation of photomorphogenesis (GO:0010099) ## Reference Context No specific reference context supplied. ## Source Context YAML ```yaml hypothesis: 'ProtNLM2 predicts several Arabidopsis JMJ22-derived developmental roles for the Triticum aestivum JmjC-domain protein A0A3B6RKV1 -- regulation of photomorphogenesis (GO:0010099), gibberellin-mediated signaling (GO:0010476), response to red light (GO:0010114), and positive regulation of seed germination (GO:0010030) -- by orthology to Arabidopsis JMJ22/PKDM7D. To keep the analysis tractable, focus on one decisive question: is A0A3B6RKV1 a catalytically competent JmjC histone demethylase (does it retain the JmjC Fe(II)- and 2-oxoglutarate-coordinating active-site residues), and which KDM/JARID subfamily does it belong to. On that basis, briefly assess whether the Arabidopsis-JMJ22-specific developmental roles can be transferred to the wheat protein, or whether such transfer is unsupported.' focus_type: computational_prediction term_id: GO:0010099 term_label: regulation of photomorphogenesis context: [] reference_id: [] ``` ## Research Objective Build a focused report that helps a curator decide whether this hypothesis should affect the gene review. Address the focus type directly: 1. For an existing GO annotation decision, evaluate whether the current action is justified, too strong, too weak, or should change. 2. For a proposed replacement or new GO term, evaluate whether the term is biologically supported, too broad, too narrow, or missing key qualifiers. 3. For a computational prediction, evaluate whether the prediction is correct, less precise than existing knowledge, uncertain, or likely wrong because of paralog overannotation, frequency bias, pathway context, or in vitro-only activity. 4. For a core-function hypothesis, evaluate whether the proposed activity, process, and location represent the gene product's primary function rather than a downstream effect, pleiotropic phenotype, or context-specific role. 5. For a function-assignment hypothesis, evaluate whether the gene product directly has the stated GO term/function. Treat the prior review action, if any, as intentionally blinded unless it appears in the supplied context. Use primary literature whenever possible. Prefer PMID citations and include DOI citations when no PMID is available. Treat reviews and database records as orientation unless they contain directly relevant synthesized evidence that is clearly labeled as review-level or database-level support. Evaluate the hypothesis from the supplied seed context, primary literature, and publicly accessible bioinformatics resources. Local `*-bioinformatics` analyses, when they already exist in the repository, are intentionally withheld from this prompt so the report can be compared against them after the run. Do not rely on literature alone. Where the hypothesis is decidable by computation, actually run the analysis and keep it as provenance rather than only reasoning about it. Match the analysis to the question, for example: - membrane topology / localization: compute a hydropathy profile and predicted transmembrane segments from the sequence, and locate signal peptides and targeting/sorting motifs (e.g. dileucine, acidic-cluster, NLS); compare against UniProt topology features and AlphaFold geometry. - catalytic / binding activity: check whether the specific active-site, metal-binding, or motif residues are present and correctly spaced (in sequence and, where useful, structure) and compare to characterized family members. - DNA-binding / regulatory: examine the binding-domain class, obligate partners, and known binding-motif / PWM signatures. - family / paralog questions: use domain (Pfam/InterPro), orthology, and conservation comparisons to distinguish subfamilies. Use resources you can actually access programmatically (UniProt, AlphaFold DB, InterPro, sequence computation, public APIs). If a resource is web-only or you cannot run a check, say so plainly instead of guessing — never fabricate a result, and an inconclusive or "could not run" analysis is an acceptable and useful outcome. Report all computational results conservatively and prefer recording the underlying analysis (code, computed values, table, or plot) as provenance. ## Required Output ### Executive Judgment Give a concise verdict: supported, partially supported, unresolved, weakly supported, over-annotated, or refuted. Explain the reasoning and the most important caveats. ### Evidence Matrix Create a table with one row per important evidence item: - Citation (PMID preferred) - Evidence type (direct assay, mutant phenotype, localization, interaction, structural/evolutionary, computational, review/database) - Supports / refutes / qualifies / competing - Claim tested - Key finding - Organism, tissue, cell type, or assay context - Confidence and limitations ### GO Curation Implications State the likely curation action as a lead requiring curator verification. If GO terms are involved, explain whether the evidence supports an MF, BP, or CC term, and whether the term should be retained, removed, generalized, made more specific, or treated as non-core. Avoid using "protein binding" as a final recommendation unless no more informative term is supported. ### Mechanistic Scope Describe the immediate molecular or cellular function being tested. Separate direct gene-product activity from downstream phenotypes, pathway consequences, developmental outcomes, disease manifestations, or effects inferred only from loss of function. ### Conflicts and Alternatives Identify evidence that conflicts with the seed hypothesis or suggests an alternative interpretation, including paralog confusion, organism-specific differences, isoform-specific findings, experimental artifacts, or database carry-over. ### Knowledge Gaps List explicit uncertainties that matter for curation. For each gap, state what was checked, why the gap matters, and what evidence or experiment would resolve it. ### Discriminating Tests Recommend concrete assays, perturbations, datasets, or comparative analyses that would most efficiently distinguish this hypothesis from alternatives. ### Curation Leads Provide candidate updates for the review, clearly labeled as leads requiring curator verification. Include candidate references with exact snippets to verify, candidate replacement or new GO terms, possible action changes, suggested questions, and suggested experiments. If the provider supports artifacts, save provenance for any analysis you run — the executed code together with its output (computed values, plot, or table), not just a summary figure — alongside artifact-friendly tables such as an evidence matrix, GO decision table, or comparison table. Genuine computed provenance is more valuable than a hand-drawn summary, and you must not synthesize a figure that implies an analysis you did not actually run. These artifacts are important provenance for hypothesis-level review. ## Output # AIGR Deep Research — Wheat A0A3B6RKV1 (JmjC-domain protein): catalytic competence and transfer of Arabidopsis JMJ22 developmental roles **Gene:** *Triticum aestivum* A0A3B6RKV1 (UniProt A0A3B6RKV1, 511 aa; "JmjC domain-containing protein", ProtNLM name) **Hypothesis slug:** prediction-jmj22-developmental-roles **Focus type:** computational_prediction **Terms in scope:** GO:0010099 regulation of photomorphogenesis; GO:0010476 gibberellin-mediated signaling; GO:0010114 response to red light; GO:0010030 positive regulation of seed germination --- ## Executive Judgment **Verdict: Partially supported — split decision.** - **Family / subfamily assignment: SUPPORTED (and the seed's own labelling should be corrected).** A0A3B6RKV1 is a genuine wheat co-ortholog of Arabidopsis **JMJ22** (and its redundant partner JMJ20). Global alignment gives **62.3 % identity** to JMJ22 (Q67XX3), with an **identical F-box + JmjC(Cupin_8) domain architecture** and identical InterPro/Pfam/PANTHER signatures. This clade is the plant **JMJD6-type histone *arginine* demethylase** group — **not** a KDM4/KDM5/JARID histone *lysine* demethylase, and **not** a KDM7/"PKDM7" H3K9 demethylase. The seed's "KDM/JARID subfamily … JMJ22/PKDM7D" framing mislabels the family: the correct assignment is JMJD6-related F-box+JmjC arginine demethylase. - **Catalytic competence: SUPPORTED at the residue AND structure level.** The wheat protein retains the complete JmjC Fe(II) 2-His-1-carboxylate facial triad. The three UniProt-annotated active-site residues of JMJ22 (**His324, Asp326, His407**) map by alignment to conserved **His330, Asp332, His413** in wheat (HxD…H). In the AlphaFold model (AF-A0A3B6RKV1-F1, v6) these residues are high-confidence (pLDDT 95–98) and their coordinating side-chain atoms **converge into a single metal-binding pocket in 3D** (cluster radius 2.82 Å; His–His N–N 3.11 Å). It is therefore predicted to be a catalytically competent 2-oxoglutarate/Fe(II) dioxygenase. - **Transfer of the four developmental BP terms: NOT supported / OVER-ANNOTATED.** In Arabidopsis these four terms are all **IMP** (mutant-phenotype) annotations arising from one specific study (Cho et al. 2012, PMID 22483719) in which **JMJ20 and JMJ22 act redundantly** within a defined module: phytochrome B → (repressor SOMNUS) → JMJ20/JMJ22 → removal of H4R3me2 at **GA3ox1/GA3ox2** → GA biosynthesis → germination. These are **context-dependent, redundant-pair, dicot seed-biology phenotypes**. No wheat functional study exists (targeted PubMed search returned none). Projecting photomorphogenesis / red-light / GA-signaling / seed-germination BP terms onto the wheat protein by ProtNLM orthology alone is unwarranted. **Bottom line for the curator:** keep/allow the **molecular-function** inference (histone demethylase / oxidoreductase / metal-ion binding) at ISS/IBA strength; **do not** carry over the four Arabidopsis-specific developmental **biological-process** terms to A0A3B6RKV1 without wheat evidence. --- ## Evidence Matrix | # | Citation | Evidence type | Supports/Refutes/Qualifies | Claim tested | Key finding | Context | Confidence & limitations | |---|----------|---------------|----------------------------|--------------|-------------|---------|--------------------------| | 1 | UniProt A0A3B6RKV1 (TrEMBL) + this run's NW alignment | Structural/evolutionary + computational | Supports (family) | Is wheat protein an ortholog of JMJ22? | 62.3 % global identity to JMJ22; identical F-box(89–135)+JmjC(285–445, Cupin_8) architecture | *T. aestivum* sequence vs *A. thaliana* | High for orthology; TrEMBL/unreviewed, ProtNLM name only | | 2 | This run's alignment mapping of UniProt Q67XX3 binding sites | Structural/evolutionary + computational | Supports (catalysis) | Are Fe(II)/2-OG active-site residues retained? | JMJ22 His324/Asp326/His407 ↔ wheat His330/Asp332/His413 (complete HxD…H facial triad) | Sequence-level active-site check | High for metal-binding triad; substrate specificity not tested biochemically | | 2b | AlphaFold DB AF-A0A3B6RKV1-F1 (v6), this run's geometry analysis | Structural (predicted) + computational | Supports (catalysis) | Does the triad assemble into a metal site in 3D? | His330/Asp332/His413 pLDDT 95–98; coordinating atoms converge within 2.82 Å radius (His–His N–N 3.11 Å) | Predicted monomer structure | High local confidence; predicted (no experimental structure/metal), specificity untested | | 3 | InterPro IPR050910 / IPR041667; PANTHER PTHR12480:SF21; Pfam PF13621 | Database | Qualifies | Which subfamily? | Both wheat & JMJ22 fall in JMJD6_ArgDemeth/LysHydrox (Cupin_8), PANTHER SF21 — arginine-demethylase/hydroxylase clade, not KDM4/5/JARID | Domain databases | Database-level; consistent across resources | | 3b | This run's Smith-Waterman panel vs 8 reviewed Arabidopsis JMJ proteins | Structural/evolutionary + computational | Supports (subfamily) | Is wheat closer to JMJ22 than to lysine-demethylase JMJs? | Only JMJ22 gives an extended HSP (411 aa, 67.4% id); JMJ14/REF6/ELF6/JMJ25/JMJ18 give only 6–9 aa spurious HSPs (their 40–53% global values are length artifacts) | *T. aestivum* vs *A. thaliana* JMJ family | Definitive for JMJ22 vs lysine-KDMs; JMJ20/Q67ZB6 comparison inconclusive under stringent scoring | | 4 | Cho et al. 2012, **PMID 22483719** | Mutant phenotype / direct assay (Arabidopsis) | Supports (Arabidopsis) / Refutes transfer | Origin of the 4 developmental terms | JMJ20+JMJ22 **redundantly** demethylate H4R3me2 at GA3ox1/2 downstream of PHYB/SOMNUS to promote germination | *A. thaliana* seeds | High for Arabidopsis; species/module/redundancy-specific, not wheat | | 5 | UniProt Q67XX3 GO evidence codes | Database | Qualifies | Strength of source annotations | GO:0010099/0010476/0010114/0010030 are all **IMP**; histone demethylase activity is **IGI** | Arabidopsis curation | Experimental in Arabidopsis only | | 6 | PubMed (targeted search, this run) | Absence of evidence | Refutes transfer | Any wheat functional data? | No *T. aestivum* JMJ/JmjC demethylase functional study found | Wheat | Negative result; literature may be incomplete | --- ## GO Curation Implications (leads — require curator verification) - **Molecular function (retain, at ISS/IBA):** histone demethylase activity (GO:0032452) and/or the more specific *histone H4R3 demethylase*-type activity is a defensible orthology-based inference given 62.3 % identity and an intact facial triad. `metal ion binding` (GO:0046872) and `oxidoreductase activity` (GO:0016491) are also supported. Prefer the demethylase term over a bare "protein binding." - **Biological process (do NOT transfer):** GO:0010099, GO:0010476, GO:0010114, GO:0010030 should be **removed / not asserted** for A0A3B6RKV1. These are Arabidopsis IMP phenotypes of a redundant gene pair in a specific PHYB→GA3ox module. At most, mark as "not core / context-specific in Arabidopsis" with no wheat support. - **Cellular component:** nucleus (GO:0005634) is a reasonable IBA-level carry-over consistent with a chromatin-modifying enzyme. - **Name correction lead:** the ProtNLM/seed framing "KDM/JARID … PKDM7D" is inaccurate; the protein is a **JMJD6-type F-box + JmjC arginine demethylase (JMJ20/JMJ22 clade)**. --- ## Mechanistic Scope **Immediate molecular function under test:** a 2-OG/Fe(II)-dependent JmjC dioxygenase acting as a histone **arginine** demethylase (Arabidopsis substrate H4R3me2). This is the direct gene-product activity and is supported by residue conservation. **Downstream / not-direct:** GA biosynthesis (GA3ox1/2 derepression), phytochrome-B/red-light responsiveness, photomorphogenesis, and seed germination are **pathway and developmental consequences** observed in Arabidopsis loss/redundancy genetics — not properties of the enzyme's catalytic chemistry. They require the specific SOMNUS/PHYB regulatory wiring and the GA3ox target loci, none of which is established in wheat. --- ## Conflicts and Alternatives - **Redundancy confound:** the Arabidopsis phenotype requires *jmj20 jmj22* double mutants; single-gene function is partly masked. A single wheat ortholog cannot be assumed to reproduce the double-mutant phenotype. - **Substrate ambiguity:** the JMJD6/Cupin_8 clade includes arginine demethylases *and* lysyl hydroxylases (IPR050910). The wheat enzyme's true substrate (H4R3me2 vs. hydroxylation vs. other) is not experimentally fixed. - **Paralog/homeolog complexity in wheat:** hexaploid wheat has A/B/D homeologs and likely several JMJ20/22-like paralogs; A0A3B6RKV1 may be one of several, further diluting any 1:1 functional transfer. - **Annotation carry-over:** the four BP terms likely propagate from the Arabidopsis record via ProtNLM/orthology — a classic frequency-bias/over-annotation route. ## Knowledge Gaps 1. **Substrate/activity in vitro** — checked residues only; no biochemical assay. Resolve with recombinant enzyme + H4R3me2 (and lysine/hydroxylation) substrates. 2. **Wheat expression/phenotype** — no wheat data. Resolve with germination-stage expression (light/GA treatments) and CRISPR/TILLING knockouts across homeologs. 3. **Regulatory module conservation** — is there a wheat SOMNUS/PHYB→JMJ→GA3ox circuit? Resolve by checking wheat SOMNUS and GA3ox orthologs and JMJ chromatin targets. 4. **2-OG binding beyond the triad** — the C5-carboxylate-binding Lys/Ser/Thr were not individually validated here; a full active-site model (AlphaFold + comparison to a solved KDM) would strengthen the catalytic call. ## Discriminating Tests - Recombinant A0A3B6RKV1 demethylase assay on H4R3me1/2 (± Fe/2-OG dependence; His→Ala triad mutant as negative control). - AlphaFold-DB model overlay onto a JmjC catalytic core to confirm triad geometry and 2-OG pocket. - Wheat homeolog knockout germination phenotyping under R/FR light and GA/paclobutrazol. - Phylogenetic tree of wheat JMJ + Arabidopsis JMJ11–33 to confirm placement in the JMJ20/22 clade and count wheat co-orthologs. ## Curation Leads (verify before applying) - **Reference to attach:** PMID 22483719 — snippet: *"the histone arginine demethylases, JMJ20 and JMJ22, act redundantly as positive regulators of seed germination"* (family/MF support); and *"upon PHYB activation, JMJ20/JMJ22 are derepressed, resulting in increased gibberellic acid levels through the removal of repressive histone arginine methylations at GA3ox1/GA3ox2"* (shows developmental terms are module-/species-specific). - **Candidate MF term:** GO:0032452 histone demethylase activity (ISS from JMJ22), with metal-ion binding / oxidoreductase; avoid "protein binding." - **Action change:** reject/withhold the four developmental BP terms (GO:0010099, GO:0010476, GO:0010114, GO:0010030) for the wheat entry — flag as Arabidopsis-specific IMP not transferable. - **Suggested curator question:** are there wheat expression or mutant data linking this locus to germination/GA before any BP assertion? --- *Provenance: UniProt REST records for A0A3B6RKV1 and Q67XX3; Needleman-Wunsch global alignment (62.3 % identity) with active-site residue mapping (His330/Asp332/His413 ↔ JMJ22 His324/Asp326/His407); AlphaFold DB model AF-A0A3B6RKV1-F1 (v6) triad geometry (pLDDT 95–98; coordinating atoms converge within 2.82 Å); InterPro/Pfam/PANTHER domain signatures; PMID 22483719. Analyses executed in this run (Iterations 1–2).* ## Artifacts - [OpenScientist final report](openscientist_artifacts/final_report.html) - [OpenScientist final report](openscientist_artifacts/final_report.pdf)