AFG3
S. cerevisiae
AAA family ATPase AFG3
What the model saw
Gene: AFG3 Organism: Saccharomyces cerevisiae Known functions: AAA family ATPase AFG3. ATP binding. ATP hydrolysis activity. ATP-dependent peptidase activity. membrane protein dislocase activity. metalloendopeptidase activity. metallopeptidase activity. protein binding. zinc ion binding.
View unredacted entry
AAA family ATPase AFG3. ATP binding. ATP hydrolysis activity. ATP-dependent peptidase activity. membrane protein dislocase activity. metalloendopeptidase activity. metallopeptidase activity. protein binding. zinc ion binding.
Solver output
AFG3 encodes a subunit of the mitochondrial m-AAA protease complex (together with Yta12/Afg3 in yeast), which is an ATP-dependent metalloprotease embedded in the inner mitochondrial membrane. Its primary role is the quality control of inner mitochondrial membrane proteins: it degrades misfolded or damaged membrane proteins (via its metalloendopeptidase and membrane protein dislocase activities) and processes key substrates such as the ribosomal assembly factor MrpL32, thereby enabling mitochondrial ribosome biogenesis and respiratory chain assembly. By maintaining mitochondrial proteostasis and ensuring proper OXPHOS complex assembly, AFG3 preserves mitochondrial function and prevents the accumulation of damaged proteins that would otherwise drive mitochondrial dysfunction, ROS production, and accelerated aging. Loss of AFG3 in yeast leads to respiratory deficiency and shortened lifespan, consistent with a pro-longevity role for its normal function.
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 AFG3's role in mitochondrial protein quality control via the m-AAA protease complex, and correctly noted that loss of AFG3 leads to respiratory deficiency and shortened lifespan. However, it drew the wrong conclusion from this: if loss of AFG3 shortens lifespan, then AFG3 is anti_longevity (its normal function promotes aging/shortens life), not pro_longevity. The model confused the direction of the effect. A gene whose loss shortens lifespan would be classified as pro_longevity (it normally extends life), but GenAge classifies AFG3 as anti_longevity, suggesting that overexpression or normal function of AFG3 promotes aging or that its loss extends lifespan. The model's mechanistic reasoning about AFG3's function is largely correct, but the final classification is wrong and contradicts the ground truth. The model was also quite confident (0.82) in its incorrect answer.
Raw API responses
solver
{
"reasoning": "AFG3 encodes a subunit of the mitochondrial m-AAA protease complex (together with Yta12/Afg3 in yeast), which is an ATP-dependent metalloprotease embedded in the inner mitochondrial membrane. Its primary role is the quality control of inner mitochondrial membrane proteins: it degrades misfolded or damaged membrane proteins (via its metalloendopeptidase and membrane protein dislocase activities) and processes key substrates such as the ribosomal assembly factor MrpL32, thereby enabling mitochondrial ribosome biogenesis and respiratory chain assembly. By maintaining mitochondrial proteostasis and ensuring proper OXPHOS complex assembly, AFG3 preserves mitochondrial function and prevents the accumulation of damaged proteins that would otherwise drive mitochondrial dysfunction, ROS production, and accelerated aging. Loss of AFG3 in yeast leads to respiratory deficiency and shortened lifespan, consistent with a pro-longevity role for its normal function.",
"confidence": 0.82,
"key_pathways": [
"mitochondrial protein quality control (m-AAA protease complex)",
"mitochondrial ribosome biogenesis (MrpL32 processing)",
"oxidative phosphorylation complex assembly"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly identified AFG3's role in mitochondrial protein quality control via the m-AAA protease complex, and correctly noted that loss of AFG3 leads to respiratory deficiency and shortened lifespan. However, it drew the wrong conclusion from this: if loss of AFG3 shortens lifespan, then AFG3 is anti_longevity (its normal function promotes aging/shortens life), not pro_longevity. The model confused the direction of the effect. A gene whose loss shortens lifespan would be classified as pro_longevity (it normally extends life), but GenAge classifies AFG3 as anti_longevity, suggesting that overexpression or normal function of AFG3 promotes aging or that its loss extends lifespan. The model's mechanistic reasoning about AFG3's function is largely correct, but the final classification is wrong and contradicts the ground truth. The model was also quite confident (0.82) in its incorrect answer.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 3,
"ground_truth_questionable": true
}