pyc-1
C. elegans
Pyruvate carboxylase 1;Pyruvate carboxylase subunit B
What the model saw
Gene: pyc-1 Organism: Caenorhabditis elegans Known functions: Pyruvate carboxylase 1;Pyruvate carboxylase subunit B. ATP binding. catalytic activity. metal ion binding. pyruvate carboxylase activity.
View unredacted entry
Pyruvate carboxylase 1;Pyruvate carboxylase subunit B. ATP binding. catalytic activity. metal ion binding. pyruvate carboxylase activity.
Solver output
Pyruvate carboxylase (pyc-1) catalyzes the ATP-dependent carboxylation of pyruvate to oxaloacetate, a key anaplerotic reaction that replenishes the TCA cycle and supports gluconeogenesis. This activity is tightly coupled to nutrient-sensing pathways: high pyruvate carboxylase flux signals nutrient abundance and promotes anabolic metabolism, which is associated with reduced longevity in C. elegans. Elevated anaplerosis via oxaloacetate feeds into biosynthetic pathways (amino acid and lipid synthesis) that are downstream of TOR/insulin signaling, both of which are well-established anti-longevity pathways when overactive. Reduced TCA cycle anaplerosis and gluconeogenesis are generally associated with dietary restriction-like states that extend lifespan in C. elegans. Thus, the normal pro-anabolic, nutrient-replete function of pyc-1 is predicted to oppose longevity by sustaining high metabolic flux in nutrient-sensing networks.
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 "anti_longevity" for pyc-1, matching the ground truth. However, the mechanistic reasoning is speculative and not well-grounded in actual experimental evidence. The model constructs a plausible-sounding but largely inferential chain: pyruvate carboxylase → anaplerosis → anabolic metabolism → TOR/insulin signaling → reduced longevity. This is a reasonable hypothesis but there is no direct evidence cited that pyc-1 specifically acts through TOR/insulin signaling in C. elegans. The actual mechanism by which pyc-1 knockdown/loss extends lifespan in C. elegans is more likely related to metabolic reprogramming (e.g., reduced gluconeogenesis forcing reliance on alternative energy sources, or mitochondrial metabolic changes), rather than specifically through deregulated nutrient sensing via TOR. The reasoning is plausible but speculative, and the mechanism classification as "deregulated_nutrient_sensing" is not well-supported. The confidence of 0.65 is appropriate given the uncertainty.
Raw API responses
solver
{
"reasoning": "Pyruvate carboxylase (pyc-1) catalyzes the ATP-dependent carboxylation of pyruvate to oxaloacetate, a key anaplerotic reaction that replenishes the TCA cycle and supports gluconeogenesis. This activity is tightly coupled to nutrient-sensing pathways: high pyruvate carboxylase flux signals nutrient abundance and promotes anabolic metabolism, which is associated with reduced longevity in C. elegans. Elevated anaplerosis via oxaloacetate feeds into biosynthetic pathways (amino acid and lipid synthesis) that are downstream of TOR/insulin signaling, both of which are well-established anti-longevity pathways when overactive. Reduced TCA cycle anaplerosis and gluconeogenesis are generally associated with dietary restriction-like states that extend lifespan in C. elegans. Thus, the normal pro-anabolic, nutrient-replete function of pyc-1 is predicted to oppose longevity by sustaining high metabolic flux in nutrient-sensing networks.",
"confidence": 0.65,
"key_pathways": [
"TCA cycle anaplerosis (pyruvate → oxaloacetate)",
"gluconeogenesis",
"TOR/insulin nutrient-sensing signaling"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model correctly predicted \"anti_longevity\" for pyc-1, matching the ground truth. However, the mechanistic reasoning is speculative and not well-grounded in actual experimental evidence. The model constructs a plausible-sounding but largely inferential chain: pyruvate carboxylase → anaplerosis → anabolic metabolism → TOR/insulin signaling → reduced longevity. This is a reasonable hypothesis but there is no direct evidence cited that pyc-1 specifically acts through TOR/insulin signaling in C. elegans. The actual mechanism by which pyc-1 knockdown/loss extends lifespan in C. elegans is more likely related to metabolic reprogramming (e.g., reduced gluconeogenesis forcing reliance on alternative energy sources, or mitochondrial metabolic changes), rather than specifically through deregulated nutrient sensing via TOR. The reasoning is plausible but speculative, and the mechanism classification as \"deregulated_nutrient_sensing\" is not well-supported. The confidence of 0.65 is appropriate given the uncertainty.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 3,
"ground_truth_questionable": false
}