CG45100 (A0A0B4LGP2): evidence and ProtNLM claim review

CG45100 encodes a predicted 38-residue peptide from an upstream open reading frame associated with the Hdac3 5-prime untranslated region. Its strongly hydrophobic central segment is compatible with membrane insertion, but peptide production, membrane topology, and biological activity are not established.

Exact input: A0A0B4LGP2, 38 residues. The accession was fetched explicitly with the gene-directory alias; no canonical-sequence substitution is made.

Raw emitted predictions: CG45100-predictions-source.json. Source features: CG45100-uniprot.txt, with an exact extraction in CG45100-sequence-evidence.json.

Sequence and domain evidence

These are sequence/domain observations or explicitly named feature predictions, not measurements of biological function. ARBA assertions and ProtNLM-derived UniProt names are not counted as validation.

FT   TRANSMEM        12..30
FT                   /note="Helical"
FT                   /evidence="ECO:0000256|SAM:Phobius"

ProtNLM claims

The snapshot emits names and location/keyword statements, with no GO or EC prediction for this target. Each actual statement is assessed below; no GO term has been substituted for it. Categories follow the function-prediction rubric, with nonspecific “uncharacterized” names marked UNC because they contain no testable function. CNN records an independently supported existing annotation; it does not assert a particular training-set composition.

Kind	Verbatim emitted statement	Assessment	Evidence and limitation
Name	Uncharacterized protein	UNC	Uncharacterized protein is an appropriately nonspecific name but supplies no testable molecular-function hypothesis. This is a predicted 38-residue upstream-ORF product and must not be conflated with HDAC3.
Location	Membrane (SL-0162)	UNC	Residues 12-30 form a hydrophobic segment and are called a transmembrane helix by Phobius. Membrane association is a reasonable sequence hypothesis; expression and membrane insertion of this tiny upstream-ORF product remain unverified.

Literature evidence

No target-specific primary finding is used to establish a molecular activity here. The current assessment is bounded by exact-record architecture and the explicitly identified curated inferences.

Annotation decisions

GO:0003674 molecular_function (ND): ACCEPT. The exact 38-residue upstream-ORF product lacks a characterized molecular function; neither its genomic proximity to Hdac3 nor its hydrophobic segment establishes deacetylase activity.
GO:0005575 cellular_component (ND): ACCEPT. Phobius predicts a transmembrane helix at residues 12-30 but this sequence prediction does not establish that the upstream-ORF peptide is produced and localized in vivo.
GO:0008150 biological_process (ND): ACCEPT. No functional process is established for the exact upstream-ORF peptide. Hdac3 gene function cannot be transferred to a separate 38-residue translation product.

Research assessment

Falcon timed out after 600 seconds; the configured perplexity-lite fallback returned HTTP 401 with insufficient_quota. Manual exact-identifier searches checked NCBI Gene 19835016 and FlyBase clone reports FBcl0277028 and FBcl0167378. They establish the CG45100/Hdac3-uORF identity and transcript/cDNA support, without establishing translation, membrane insertion, or physiological function of the 38-residue peptide. No provider report is fabricated.

Sources: NCBI Gene 19835016, FlyBase SD27965, FlyBase LD42026.

The annotation and prediction assessments are complete. UNC/UNDECIDED record delimited scientific or evidence uncertainty. Empty core-function lists indicate that no sufficiently resolved molecular activity can be asserted, rather than an unfinished review.