Ercc1
M. musculus
excision repair cross-complementing rodent repair deficiency, complementation group 1
What the model saw
Gene: Ercc1 Organism: Mus musculus Known functions: excision repair cross-complementing rodent repair deficiency, complementation group 1. DNA excision repair protein ERCC-1. 3' overhang single-stranded DNA endonuclease activity. DNA binding. TFIID-class transcription factor complex binding. damaged DNA binding. promoter-specific chromatin binding. protein binding. single-stranded DNA binding. single-stranded DNA endonuclease activity.
View unredacted entry
excision repair cross-complementing rodent repair deficiency, complementation group 1. DNA excision repair protein ERCC-1. 3' overhang single-stranded DNA endonuclease activity. DNA binding. TFIID-class transcription factor complex binding. damaged DNA binding. promoter-specific chromatin binding. protein binding. single-stranded DNA binding. single-stranded DNA endonuclease activity.
Solver output
ERCC1 is a core component of the NER (nucleotide excision repair) pathway, forming a heterodimer with XPF to execute the 3' incision during excision of bulky DNA lesions and interstrand crosslinks. Its single-stranded DNA endonuclease and damaged DNA binding activities are essential for removing helix-distorting lesions that would otherwise accumulate and drive genomic instability. Mouse models with Ercc1 deficiency (Ercc1−/− or hypomorphic alleles) exhibit dramatically accelerated aging phenotypes—including neurodegeneration, liver pathology, sarcopenia, and shortened lifespan—directly demonstrating that loss of this repair function promotes premature aging. The gene's normal function therefore suppresses the accumulation of DNA damage, a primary driver of the genomic instability hallmark of aging. Its interaction with TFIID-class transcription factor complexes also links it to transcription-coupled NER, broadening its protective role across the genome.
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 identified ERCC1 as pro_longevity with high confidence (0.93). The mechanistic reasoning is excellent and accurate: ERCC1 forms a heterodimer with XPF for NER, its loss leads to accelerated aging phenotypes in mice, and it protects against genomic instability. The model correctly identified the key pathways (NER, interstrand crosslink repair, transcription-coupled repair) and accurately described the mouse knockout/hypomorphic phenotypes. All aspects of the prediction are correct and well-reasoned.
Raw API responses
solver
{
"reasoning": "ERCC1 is a core component of the NER (nucleotide excision repair) pathway, forming a heterodimer with XPF to execute the 3' incision during excision of bulky DNA lesions and interstrand crosslinks. Its single-stranded DNA endonuclease and damaged DNA binding activities are essential for removing helix-distorting lesions that would otherwise accumulate and drive genomic instability. Mouse models with Ercc1 deficiency (Ercc1−/− or hypomorphic alleles) exhibit dramatically accelerated aging phenotypes—including neurodegeneration, liver pathology, sarcopenia, and shortened lifespan—directly demonstrating that loss of this repair function promotes premature aging. The gene's normal function therefore suppresses the accumulation of DNA damage, a primary driver of the genomic instability hallmark of aging. Its interaction with TFIID-class transcription factor complexes also links it to transcription-coupled NER, broadening its protective role across the genome.",
"confidence": 0.93,
"key_pathways": [
"nucleotide excision repair (NER)",
"interstrand crosslink repair",
"transcription-coupled DNA repair"
],
"mechanism_class": "genomic_instability",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly identified ERCC1 as pro_longevity with high confidence (0.93). The mechanistic reasoning is excellent and accurate: ERCC1 forms a heterodimer with XPF for NER, its loss leads to accelerated aging phenotypes in mice, and it protects against genomic instability. The model correctly identified the key pathways (NER, interstrand crosslink repair, transcription-coupled repair) and accurately described the mouse knockout/hypomorphic phenotypes. All aspects of the prediction are correct and well-reasoned.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 5,
"ground_truth_questionable": false
}