Prx2
D. melanogaster
Peroxiredoxin 2
What the model saw
Gene: Prx2 Organism: Drosophila melanogaster Known functions: Peroxiredoxin 2. peroxiredoxin 2. antioxidant activity. oxidoreductase activity. peroxiredoxin activity. protein binding. thioredoxin peroxidase activity. thioredoxin-dependent peroxiredoxin activity.
View unredacted entry
Peroxiredoxin 2. peroxiredoxin 2. antioxidant activity. oxidoreductase activity. peroxiredoxin activity. protein binding. thioredoxin peroxidase activity. thioredoxin-dependent peroxiredoxin activity.
Solver output
Prx2 encodes a thioredoxin-dependent peroxiredoxin that catalyzes the reduction of hydrogen peroxide and organic hydroperoxides using electrons donated by thioredoxin, directly neutralizing reactive oxygen species (ROS). In Drosophila, elevated ROS levels accelerate oxidative damage to proteins, lipids, and DNA, driving age-related decline. By scavenging H2O2 and lipid peroxides, Prx2 reduces oxidative stress that would otherwise impair mitochondrial function and promote cellular damage. Peroxiredoxins are well-established pro-longevity factors across model organisms; loss of peroxiredoxin activity consistently shortens lifespan while overexpression extends it. The thioredoxin peroxidase activity places Prx2 centrally in the thioredoxin/peroxiredoxin antioxidant axis, a key pathway counteracting mitochondria-derived ROS accumulation during 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 correctly predicted pro_longevity with high confidence (0.88). The mechanistic reasoning about ROS detoxification via the thioredoxin/peroxiredoxin antioxidant system is largely correct and well-articulated. However, the model classified the mechanism_class as "mitochondrial_dysfunction," which is misleading. Prx2 is a cytoplasmic peroxiredoxin primarily involved in direct ROS scavenging, not specifically mitochondrial dysfunction. The primary mechanism is antioxidant/oxidative stress defense, not mitochondrial dysfunction per se. The model conflates ROS scavenging with mitochondrial dysfunction as a mechanism class. The reasoning text itself is more accurate than the mechanism_class label, but the classification is still a notable error.
Raw API responses
solver
{
"reasoning": "Prx2 encodes a thioredoxin-dependent peroxiredoxin that catalyzes the reduction of hydrogen peroxide and organic hydroperoxides using electrons donated by thioredoxin, directly neutralizing reactive oxygen species (ROS). In Drosophila, elevated ROS levels accelerate oxidative damage to proteins, lipids, and DNA, driving age-related decline. By scavenging H2O2 and lipid peroxides, Prx2 reduces oxidative stress that would otherwise impair mitochondrial function and promote cellular damage. Peroxiredoxins are well-established pro-longevity factors across model organisms; loss of peroxiredoxin activity consistently shortens lifespan while overexpression extends it. The thioredoxin peroxidase activity places Prx2 centrally in the thioredoxin/peroxiredoxin antioxidant axis, a key pathway counteracting mitochondria-derived ROS accumulation during aging.",
"confidence": 0.88,
"key_pathways": [
"thioredoxin/peroxiredoxin antioxidant system",
"reactive oxygen species (ROS) detoxification",
"mitochondrial oxidative stress response"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity with high confidence (0.88). The mechanistic reasoning about ROS detoxification via the thioredoxin/peroxiredoxin antioxidant system is largely correct and well-articulated. However, the model classified the mechanism_class as \"mitochondrial_dysfunction,\" which is misleading. Prx2 is a cytoplasmic peroxiredoxin primarily involved in direct ROS scavenging, not specifically mitochondrial dysfunction. The primary mechanism is antioxidant/oxidative stress defense, not mitochondrial dysfunction per se. The model conflates ROS scavenging with mitochondrial dysfunction as a mechanism class. The reasoning text itself is more accurate than the mechanism_class label, but the classification is still a notable error.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 3,
"ground_truth_questionable": false
}