Drp1
D. melanogaster
Dynamin related protein 1
What the model saw
Gene: Drp1 Organism: Drosophila melanogaster Known functions: Dynamin related protein 1. dynamin related protein 1. GTP binding. GTPase activity. microtubule binding.
View unredacted entry
Dynamin related protein 1. dynamin related protein 1. GTP binding. GTPase activity. microtubule binding.
Solver output
Drp1 (Dynamin-related protein 1) is the master regulator of mitochondrial fission, using its GTPase activity to sever the outer mitochondrial membrane. Excessive mitochondrial fission driven by Drp1 leads to mitochondrial fragmentation, impaired oxidative phosphorylation, increased ROS production, and reduced mitochondrial membrane potential — all hallmarks of mitochondrial dysfunction associated with aging. In Drosophila, elevated Drp1-mediated fission disrupts the balance between fission and fusion (e.g., with Mfn/Marf and Opa1), impairing mitophagy-mediated clearance of damaged mitochondria and accelerating age-related decline. Studies in flies and other model organisms show that reducing Drp1 activity or shifting the fission/fusion balance toward fusion extends lifespan, while Drp1 overactivation shortens it. Its microtubule binding further facilitates its recruitment to mitochondrial fission sites, amplifying its pro-fission role.
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 anti_longevity but the ground truth is pro_longevity. The model's reasoning is based on the general principle that excessive Drp1-mediated fission is harmful, but in Drosophila, Drp1 activity is actually pro-longevity. The model's mechanistic reasoning is also incorrect in this context — it assumes that Drp1 overactivation shortens lifespan in flies, but the actual finding is that Drp1 promotes longevity (likely through proper mitophagy and mitochondrial quality control). The model was fairly confident (0.72) in its wrong answer. The reasoning conflates general mammalian/cell biology intuitions with Drosophila-specific findings, and gets the direction of effect wrong.
Raw API responses
solver
{
"reasoning": "Drp1 (Dynamin-related protein 1) is the master regulator of mitochondrial fission, using its GTPase activity to sever the outer mitochondrial membrane. Excessive mitochondrial fission driven by Drp1 leads to mitochondrial fragmentation, impaired oxidative phosphorylation, increased ROS production, and reduced mitochondrial membrane potential — all hallmarks of mitochondrial dysfunction associated with aging. In Drosophila, elevated Drp1-mediated fission disrupts the balance between fission and fusion (e.g., with Mfn/Marf and Opa1), impairing mitophagy-mediated clearance of damaged mitochondria and accelerating age-related decline. Studies in flies and other model organisms show that reducing Drp1 activity or shifting the fission/fusion balance toward fusion extends lifespan, while Drp1 overactivation shortens it. Its microtubule binding further facilitates its recruitment to mitochondrial fission sites, amplifying its pro-fission role.",
"confidence": 0.72,
"key_pathways": [
"mitochondrial fission/fusion balance",
"mitophagy",
"ROS/oxidative stress signaling"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity but the ground truth is pro_longevity. The model's reasoning is based on the general principle that excessive Drp1-mediated fission is harmful, but in Drosophila, Drp1 activity is actually pro-longevity. The model's mechanistic reasoning is also incorrect in this context — it assumes that Drp1 overactivation shortens lifespan in flies, but the actual finding is that Drp1 promotes longevity (likely through proper mitophagy and mitochondrial quality control). The model was fairly confident (0.72) in its wrong answer. The reasoning conflates general mammalian/cell biology intuitions with Drosophila-specific findings, and gets the direction of effect wrong.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}