prdx-2
C. elegans
Peroxiredoxin prdx-2
What the model saw
Gene: prdx-2 Organism: Caenorhabditis elegans Known functions: Peroxiredoxin prdx-2. antioxidant activity. oxidoreductase activity. peroxiredoxin activity. thioredoxin peroxidase activity. thioredoxin-dependent peroxiredoxin activity.
View unredacted entry
Peroxiredoxin prdx-2. antioxidant activity. oxidoreductase activity. peroxiredoxin activity. thioredoxin peroxidase activity. thioredoxin-dependent peroxiredoxin activity.
Solver output
PRDX-2 is 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 C. elegans, elevated ROS levels accelerate oxidative damage to proteins, lipids, and nucleic acids, contributing to age-related decline. By scavenging H2O2—a major byproduct of mitochondrial respiration—PRDX-2 mitigates mitochondrial oxidative stress, a key driver of aging. Loss of prdx-2 in C. elegans has been shown to reduce lifespan and increase oxidative damage, while its activity is integrated into the thioredoxin antioxidant system that supports redox homeostasis. This places prdx-2 squarely in the mitochondrial dysfunction hallmark, as it counteracts ROS-mediated damage originating from the electron transport chain.
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 for prdx-2, which matches the ground truth. The confidence of 0.88 is reasonable given the gene's well-known antioxidant functions. However, the mechanism classification as "mitochondrial_dysfunction" is inaccurate. PRDX-2 is a cytoplasmic peroxiredoxin in C. elegans, not primarily a mitochondrial protein. Its pro-longevity role is better characterized through general oxidative stress defense and redox signaling (including modulation of H2O2 as a signaling molecule), rather than specifically through mitochondrial dysfunction. The model conflates ROS scavenging with mitochondrial dysfunction as a mechanism class, which is a category error. The thioredoxin-peroxiredoxin system operates broadly in the cytoplasm and is not specifically a mitochondrial pathway. Additionally, PRDX-2's role in C. elegans longevity involves complex interactions with insulin/IGF-1 signaling and redox signaling, not just simple ROS neutralization.
Raw API responses
solver
{
"reasoning": "PRDX-2 is 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 C. elegans, elevated ROS levels accelerate oxidative damage to proteins, lipids, and nucleic acids, contributing to age-related decline. By scavenging H2O2—a major byproduct of mitochondrial respiration—PRDX-2 mitigates mitochondrial oxidative stress, a key driver of aging. Loss of prdx-2 in C. elegans has been shown to reduce lifespan and increase oxidative damage, while its activity is integrated into the thioredoxin antioxidant system that supports redox homeostasis. This places prdx-2 squarely in the mitochondrial dysfunction hallmark, as it counteracts ROS-mediated damage originating from the electron transport chain.",
"confidence": 0.88,
"key_pathways": [
"thioredoxin-peroxiredoxin antioxidant system",
"reactive oxygen species (ROS) detoxification",
"mitochondrial redox homeostasis"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for prdx-2, which matches the ground truth. The confidence of 0.88 is reasonable given the gene's well-known antioxidant functions. However, the mechanism classification as \"mitochondrial_dysfunction\" is inaccurate. PRDX-2 is a cytoplasmic peroxiredoxin in C. elegans, not primarily a mitochondrial protein. Its pro-longevity role is better characterized through general oxidative stress defense and redox signaling (including modulation of H2O2 as a signaling molecule), rather than specifically through mitochondrial dysfunction. The model conflates ROS scavenging with mitochondrial dysfunction as a mechanism class, which is a category error. The thioredoxin-peroxiredoxin system operates broadly in the cytoplasm and is not specifically a mitochondrial pathway. Additionally, PRDX-2's role in C. elegans longevity involves complex interactions with insulin/IGF-1 signaling and redox signaling, not just simple ROS neutralization.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 3,
"ground_truth_questionable": false
}