Ercc4
M. musculus
excision repair cross-complementing rodent repair deficiency, complementation group 4
What the model saw
Gene: Ercc4 Organism: Mus musculus Known functions: excision repair cross-complementing rodent repair deficiency, complementation group 4. DNA repair endonuclease XPF. 3' overhang single-stranded DNA endonuclease activity. DNA binding. DNA endonuclease activity. TFIID-class transcription factor complex binding. damaged DNA binding. identical protein binding. promoter-specific chromatin binding. protein-macromolecule adaptor activity. single-stranded DNA binding. single-stranded DNA endonuclease activity.
View unredacted entry
excision repair cross-complementing rodent repair deficiency, complementation group 4. DNA repair endonuclease XPF. 3' overhang single-stranded DNA endonuclease activity. DNA binding. DNA endonuclease activity. TFIID-class transcription factor complex binding. damaged DNA binding. identical protein binding. promoter-specific chromatin binding. protein-macromolecule adaptor activity. single-stranded DNA binding. single-stranded DNA endonuclease activity.
Solver output
ERCC4 (XPF) encodes the structure-specific endonuclease that forms the XPF-ERCC1 heterodimer, which makes the 5' incision during nucleotide excision repair (NER). This enzymatic activity is essential for removing bulky DNA adducts, UV-induced photoproducts, and interstrand crosslinks. Loss-of-function mutations in ERCC4 in mice cause accelerated aging phenotypes, including premature neurodegeneration and reduced lifespan, directly demonstrating that its normal DNA repair function suppresses genomic instability. The gene's damaged DNA binding and single-stranded DNA endonuclease activities are the molecular basis for resolving helix-distorting lesions that would otherwise accumulate and drive cellular senescence and tissue dysfunction. By maintaining genomic integrity, ERCC4 opposes the accumulation of somatic mutations and DNA damage signaling that accelerates aging.
GenAge curators classify each gene's normal function as promoting (Pro-Longevity) or opposing (Anti-Longevity) longevity, based on synthesis across studies. Loss-of-function effects can vary from this depending on the manipulation.
Advisor judgment
The model correctly predicted pro_longevity for Ercc4 in Mus musculus with high confidence (0.88). The mechanistic reasoning is excellent and accurate: ERCC4/XPF forms the XPF-ERCC1 heterodimer that makes the 5' incision during NER, loss-of-function causes accelerated aging and reduced lifespan in mice, and the gene promotes longevity by maintaining genomic integrity. The key pathways identified (NER, interstrand crosslink repair, DNA damage response) are all correct and relevant. This is a well-reasoned, accurate prediction.
Raw API responses
solver
{
"reasoning": "ERCC4 (XPF) encodes the structure-specific endonuclease that forms the XPF-ERCC1 heterodimer, which makes the 5' incision during nucleotide excision repair (NER). This enzymatic activity is essential for removing bulky DNA adducts, UV-induced photoproducts, and interstrand crosslinks. Loss-of-function mutations in ERCC4 in mice cause accelerated aging phenotypes, including premature neurodegeneration and reduced lifespan, directly demonstrating that its normal DNA repair function suppresses genomic instability. The gene's damaged DNA binding and single-stranded DNA endonuclease activities are the molecular basis for resolving helix-distorting lesions that would otherwise accumulate and drive cellular senescence and tissue dysfunction. By maintaining genomic integrity, ERCC4 opposes the accumulation of somatic mutations and DNA damage signaling that accelerates aging.",
"confidence": 0.88,
"key_pathways": [
"nucleotide excision repair (NER)",
"interstrand crosslink repair",
"DNA damage response"
],
"mechanism_class": "genomic_instability",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for Ercc4 in Mus musculus with high confidence (0.88). The mechanistic reasoning is excellent and accurate: ERCC4/XPF forms the XPF-ERCC1 heterodimer that makes the 5' incision during NER, loss-of-function causes accelerated aging and reduced lifespan in mice, and the gene promotes longevity by maintaining genomic integrity. The key pathways identified (NER, interstrand crosslink repair, DNA damage response) are all correct and relevant. This is a well-reasoned, accurate prediction.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 5,
"ground_truth_questionable": false
}