MYC2 re-review, 2026-09-11

Reviewed all 52 annotation rows, including the pre-existing NEW jasmonate-signaling proposal, against cached publications, UniProt and Falcon context. Publication caching recovered 29/29 cited papers; selected incomplete full texts were refreshed through the CLI. New Falcon research with perplexity-lite fallback was launched; its status is recorded below when complete.

Primary evidence supports sequence-specific promoter binding and transcriptional activation [PMID:9368419, "The rd22BP1 protein binds specifically to the first MYC recognition site in the 67-bp fragment."] [PMID:21321051, "MYC2, MYC3, and MYC4 were all capable of inducing expression of JAZ::GUS reporter constructs following transfection of carrot protoplasts."]. Replaced synthetic quotations attributed to research/PANTHER files with checkable primary passages.

Jasmonate response is core, not incidental: JAZ regulation places MYC2 within signaling. The pre-existing NEW pathway row is now supported directly by PMID:17637675 and PMID:21321051, and the pathway is included in core_functions. Tetramerization is also a demonstrated mechanism: "Biochemical assays confirmed that full-length MYC2 forms a stable homo-tetramer both in solution and in DNA-bound states" PMID:28514654.

MYC2 negatively regulates tryptophan/indole-glucosinolate metabolism and positively regulates flavonoid biosynthesis and insect resistance PMID:17616737. The biological-process reviews now preserve these directions and their experimental context instead of treating all outputs as unspecified phenotypes.

The MYC3-focused structural paper also assays MYC2-JAZ9 binding directly in its full text [PMID:26258305, Results, aa 55-259 mapping]. Its title/abstract focus does not justify rejecting MYC2 evidence. Nuclear localization is directly imaged [PMID:27357749, "Venus-MYC2 was targeted only to the nucleus"].

Specific interaction-map rows and an unexposed wound-induced expression measurement remain UNDECIDED pending source tables or full assay text. General promoter-binding and nuclear-location assertions with independent direct evidence remain ACCEPT, with explicit deference to the original curator for unresolved source-specific assays. IEA entries use evidence-appropriate cited rationale without mandatory snippets.

Existing proposed GO replacements and jasmonate-signaling GO:0009867 were verified against the QuickGO ontology service during this session; labels match and none is obsolete.

Targeted cache refresh recovered full text for PMID:17675405 and PMID:25490915. The virus paper explicitly tests MYC2 binding to a TPS10 G-box-like element by EMSA with mutant controls and ChIP, and reports nuclear localization; its three relevant rows now cite that direct source. The wound-study extraction still does not expose the MYC2-specific expression table. PMID:25533953 and PMID:27923776 full-text network articles likewise did not expose the MYC2-specific promoter edge, so their general DNA-binding assertions are retained with independent direct support and curator deference. PMID:25352272 and PMID:30630869 refresh attempts failed to recover full text; the parent reviewer preserved the prior generated caches rather than accepting the degraded refresh.

Research refresh outcome: Falcon timed out after 600 seconds; the automatically attempted perplexity-lite fallback failed with HTTP 401 insufficient_quota. No fresh MYC2 provider report was produced. The pre-existing Falcon report was preserved and the re-review was completed using cached primary literature and targeted full-text retrieval; no manual content was written under a provider-generated filename.

2026-09-12: PR2996 review follow-up

Changed eight remaining generic protein-binding MARK_AS_OVER_ANNOTATED rows to REMOVE under the annotation-reviewer skill; retained the specific interaction summaries and verified quotes, including JAZ regulation, EIN3 antagonism, and PYL6/YL1 interactions. Removal concerns the uninformative label and does not reject those interactions. Four inaccessible interaction-source rows remain UNDECIDED under the skill's explicit exception. No new corepressor activity is inferred simply from the MYC2-EIN3 interaction and inhibition result; the verified definition of GO:0003714 requires repression via transcription-factor binding at a specific genomic locus, which this pass did not establish.

Corrected the GO:0009737 summary to describe ABA induction of MYC2 transcription [PMID:9368419, "RNA gel blot analysis revealed that transcription of the rd22BP1 gene is induced by dehydration stress and ABA treatment, and its induction precedes that of rd22."]. Changed GO:0009753 to MODIFY with GO:0009867, jasmonic acid mediated signaling pathway, verified through official QuickGO. Read the original PMID:21242320 abstract and added its MYC2-specific context quote [PMID:21242320, "The bHLH transcription factor MYC2 was found to interact with JAZs and mediate JA responses including JA-inhibitory root growth."]. The article foregrounds new MYC3 experiments; independently cited primary MYC2/JAZ and transcription assays provide the pathway grounding, not an invented MYC2 assay from the MYC3 abstract.

Considered the request for a homotetramerization molecular function. GO:0046983 (protein dimerization activity) is already present as an IEA annotation; its verified definition describes a two-subunit structure and does not specifically represent the observed four-subunit MYC2 assembly. GO:0051289 (protein homotetramerization) is already experimentally annotated and accepted; QuickGO confirms it is a biological process. The original structural abstract explicitly states [PMID:28514654, "Biochemical assays confirmed that full-length MYC2 forms a stable homo-tetramer both in solution and in DNA-bound states, whereas MYC3 forms only a homodimer."]. Retained that process, description and mechanistic core-function explanation without inventing an MF term or conflating dimerization and tetramerization. No new research job was needed for these bounded corrections.

2026-10-06 — resolved remaining UNDECIDED rows (jasmonate_coi1_jaz_signaling module)

2026-10-06 — PR review follow-up