Surf1
M. musculus
surfeit gene 1
What the model saw
Gene: Surf1 Organism: Mus musculus Known functions: surfeit gene 1. surfeit locus protein 1. cytochrome-c oxidase activity.
View unredacted entry
surfeit gene 1. surfeit locus protein 1. cytochrome-c oxidase activity.
Solver output
SURF1 is an assembly factor for cytochrome c oxidase (Complex IV of the mitochondrial electron transport chain), facilitating the incorporation of heme a into the COX1 subunit. Paradoxically, Surf1 knockout mice show partial Complex IV deficiency yet display extended lifespan compared to wild-type controls, a finding consistent with the concept of mitohormesis — mild mitochondrial stress triggering adaptive pro-longevity responses. The reduction in Complex IV activity lowers electron flow and reactive oxygen species production, reducing oxidative damage. This mirrors observations in C. elegans where partial ETC inhibition extends lifespan via reduced ROS and activation of stress-response pathways. Thus, while SURF1's normal molecular function supports full Complex IV assembly and activity, its loss (and the resulting mild mitochondrial dysfunction) is pro-longevity, suggesting the gene's normal function is net anti-longevity in the context of 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 predicted "pro_longevity" but the ground truth is "anti_longevity." The model's reasoning is internally confused: it correctly notes that SURF1 is a Complex IV assembly factor, and then argues that because Surf1 knockout mice supposedly live longer, the gene's normal function is "anti-longevity." However, the ground truth classifies Surf1 as "anti_longevity," meaning the gene itself promotes longevity when present (or its loss reduces lifespan). The model's mitohormesis narrative about Surf1 KO mice extending lifespan appears to be a hallucination or misremembering — in reality, Surf1 knockout mice show mitochondrial disease phenotypes consistent with Leigh syndrome, not extended lifespan. The model's mechanistic reasoning about mitohormesis and ROS reduction leading to lifespan extension is not supported by the actual experimental data for this gene in mice. The model also contradicts itself by saying the gene's "normal function is net anti-longevity" while simultaneously predicting "pro_longevity" — these labels refer to the gene's influence on longevity (i.e., whether having the gene promotes or reduces lifespan), and the model appears confused about the directionality of the classification.
Raw API responses
solver
{
"reasoning": "SURF1 is an assembly factor for cytochrome c oxidase (Complex IV of the mitochondrial electron transport chain), facilitating the incorporation of heme a into the COX1 subunit. Paradoxically, Surf1 knockout mice show partial Complex IV deficiency yet display extended lifespan compared to wild-type controls, a finding consistent with the concept of mitohormesis — mild mitochondrial stress triggering adaptive pro-longevity responses. The reduction in Complex IV activity lowers electron flow and reactive oxygen species production, reducing oxidative damage. This mirrors observations in C. elegans where partial ETC inhibition extends lifespan via reduced ROS and activation of stress-response pathways. Thus, while SURF1's normal molecular function supports full Complex IV assembly and activity, its loss (and the resulting mild mitochondrial dysfunction) is pro-longevity, suggesting the gene's normal function is net anti-longevity in the context of aging.",
"confidence": 0.62,
"key_pathways": [
"cytochrome c oxidase (Complex IV) assembly",
"mitochondrial electron transport chain",
"mitohormesis / ROS signaling"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted \"pro_longevity\" but the ground truth is \"anti_longevity.\" The model's reasoning is internally confused: it correctly notes that SURF1 is a Complex IV assembly factor, and then argues that because Surf1 knockout mice supposedly live longer, the gene's normal function is \"anti-longevity.\" However, the ground truth classifies Surf1 as \"anti_longevity,\" meaning the gene itself promotes longevity when present (or its loss reduces lifespan). The model's mitohormesis narrative about Surf1 KO mice extending lifespan appears to be a hallucination or misremembering — in reality, Surf1 knockout mice show mitochondrial disease phenotypes consistent with Leigh syndrome, not extended lifespan. The model's mechanistic reasoning about mitohormesis and ROS reduction leading to lifespan extension is not supported by the actual experimental data for this gene in mice. The model also contradicts itself by saying the gene's \"normal function is net anti-longevity\" while simultaneously predicting \"pro_longevity\" — these labels refer to the gene's influence on longevity (i.e., whether having the gene promotes or reduces lifespan), and the model appears confused about the directionality of the classification.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}