atp-2
C. elegans
ATP synthase subunit beta, mitochondrial
What the model saw
Gene: atp-2 Organism: Caenorhabditis elegans Known functions: ATP synthase subunit beta, mitochondrial. ATP binding. protein binding. protein domain specific binding. proton-transporting ATP synthase activity, rotational mechanism.
View unredacted entry
ATP synthase subunit beta, mitochondrial. ATP binding. protein binding. protein domain specific binding. proton-transporting ATP synthase activity, rotational mechanism.
Solver output
atp-2 encodes the beta subunit of mitochondrial ATP synthase (Complex V), which catalyzes ATP synthesis via the rotational mechanism driven by the proton gradient across the inner mitochondrial membrane. Paradoxically, partial loss-of-function of atp-2 in C. elegans has been shown to extend lifespan, consistent with the mitochondrial hormesis (mitohormesis) model, where mild impairment of the electron transport chain/oxidative phosphorylation reduces ROS production and activates compensatory stress-response pathways. However, the gene's normal function is to sustain efficient mitochondrial ATP production, which is essential for cellular energy homeostasis. The key tension here is that while the protein's normal activity supports bioenergetics, RNAi knockdown of atp-2 is a well-documented pro-longevity intervention in C. elegans, suggesting the wild-type gene's full activity is net anti-longevity in this context. The reduced electron flow and altered mitochondrial membrane potential upon partial atp-2 inhibition engage pathways such as UPRmt and AMPK signaling that promote longevity. Given that the question asks about the gene's normal function (not its loss), full ATP synthase activity is associated with higher metabolic rate and potentially greater oxidative damage, placing it on the anti-longevity side of the mitochondrial dysfunction hallmark.
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 the mechanistic biology - that atp-2 knockdown extends lifespan via mitohormesis/UPRmt, and that the wild-type gene's full activity is associated with anti-longevity effects. However, the model ultimately predicted "pro_longevity" despite its own reasoning clearly pointing toward "anti_longevity." The model explicitly stated "full ATP synthase activity is associated with higher metabolic rate and potentially greater oxidative damage, placing it on the anti-longevity side" but then submitted "pro_longevity" as its final answer. This is a contradiction within the model's own reasoning - the mechanistic understanding was correct but the final classification was wrong. The ground truth is "anti_longevity," which aligns with the model's own mechanistic reasoning but contradicts its final prediction. This appears to be a failure to properly translate correct mechanistic reasoning into the correct classification label.
Raw API responses
solver
{
"reasoning": "atp-2 encodes the beta subunit of mitochondrial ATP synthase (Complex V), which catalyzes ATP synthesis via the rotational mechanism driven by the proton gradient across the inner mitochondrial membrane. Paradoxically, partial loss-of-function of atp-2 in C. elegans has been shown to extend lifespan, consistent with the mitochondrial hormesis (mitohormesis) model, where mild impairment of the electron transport chain/oxidative phosphorylation reduces ROS production and activates compensatory stress-response pathways. However, the gene's normal function is to sustain efficient mitochondrial ATP production, which is essential for cellular energy homeostasis. The key tension here is that while the protein's normal activity supports bioenergetics, RNAi knockdown of atp-2 is a well-documented pro-longevity intervention in C. elegans, suggesting the wild-type gene's full activity is net anti-longevity in this context. The reduced electron flow and altered mitochondrial membrane potential upon partial atp-2 inhibition engage pathways such as UPRmt and AMPK signaling that promote longevity. Given that the question asks about the gene's normal function (not its loss), full ATP synthase activity is associated with higher metabolic rate and potentially greater oxidative damage, placing it on the anti-longevity side of the mitochondrial dysfunction hallmark.",
"confidence": 0.62,
"key_pathways": [
"oxidative phosphorylation / Complex V (ATP synthase)",
"mitochondrial unfolded protein response (UPRmt)",
"mitohormesis / AMPK signaling"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly identified the mechanistic biology - that atp-2 knockdown extends lifespan via mitohormesis/UPRmt, and that the wild-type gene's full activity is associated with anti-longevity effects. However, the model ultimately predicted \"pro_longevity\" despite its own reasoning clearly pointing toward \"anti_longevity.\" The model explicitly stated \"full ATP synthase activity is associated with higher metabolic rate and potentially greater oxidative damage, placing it on the anti-longevity side\" but then submitted \"pro_longevity\" as its final answer. This is a contradiction within the model's own reasoning - the mechanistic understanding was correct but the final classification was wrong. The ground truth is \"anti_longevity,\" which aligns with the model's own mechanistic reasoning but contradicts its final prediction. This appears to be a failure to properly translate correct mechanistic reasoning into the correct classification label.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 3,
"ground_truth_questionable": false
}