daf-16
C. elegans
Forkhead box protein O
What the model saw
Gene: daf-16 Organism: Caenorhabditis elegans Known functions: Forkhead box protein O. 14-3-3 protein binding. DEAD/H-box RNA helicase binding. DNA-binding transcription activator activity, RNA polymerase II-specific. DNA-binding transcription factor activity. DNA-binding transcription factor activity, RNA polymerase II-specific. DNA-binding transcription factor binding. RNA polymerase II cis-regulatory region sequence-specific DNA binding. RNA polymerase II transcription regulatory region sequence-specific DNA binding. beta-catenin binding. enzyme binding. protein binding. sequence-specific DNA binding. ubiquitin protein ligase binding. ubiquitin-specific protease binding.
View unredacted entry
Forkhead box protein O. 14-3-3 protein binding. DEAD/H-box RNA helicase binding. DNA-binding transcription activator activity, RNA polymerase II-specific. DNA-binding transcription factor activity. DNA-binding transcription factor activity, RNA polymerase II-specific. DNA-binding transcription factor binding. RNA polymerase II cis-regulatory region sequence-specific DNA binding. RNA polymerase II transcription regulatory region sequence-specific DNA binding. beta-catenin binding. enzyme binding. protein binding. sequence-specific DNA binding. ubiquitin protein ligase binding. ubiquitin-specific protease binding.
Solver output
DAF-16 is the C. elegans ortholog of FOXO transcription factors, which function as the primary downstream effector of the insulin/IGF-1 signaling (IIS) pathway. When IIS is reduced, DAF-16 is not phosphorylated by AKT and translocates to the nucleus, where it acts as an RNA Pol II-specific transcriptional activator to upregulate stress resistance, proteostasis, and longevity genes. Its binding to 14-3-3 proteins reflects the cytoplasmic retention mechanism under active IIS, while its ubiquitin-related binding partners reflect regulation of its stability. Loss-of-function mutations in daf-16 completely suppress the lifespan extension seen in daf-2 (insulin receptor) mutants, and overactivation of DAF-16 is sufficient to extend lifespan, making it one of the most well-established pro-longevity genes in any model organism. Its role sits squarely within the deregulated nutrient/insulin sensing hallmark of 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 identified daf-16 as pro_longevity with very high confidence (0.98). The mechanistic reasoning is excellent and accurate: DAF-16 is indeed the C. elegans FOXO transcription factor, the primary downstream effector of the insulin/IGF-1 signaling pathway. The model correctly explains the AKT phosphorylation mechanism, 14-3-3 cytoplasmic retention, nuclear translocation upon reduced IIS, and the well-established relationship with daf-2. The key pathways identified are all correct and relevant. This is one of the most well-known pro-longevity genes in aging research, and the model's reasoning reflects deep and accurate knowledge of the biology.
Raw API responses
solver
{
"reasoning": "DAF-16 is the C. elegans ortholog of FOXO transcription factors, which function as the primary downstream effector of the insulin/IGF-1 signaling (IIS) pathway. When IIS is reduced, DAF-16 is not phosphorylated by AKT and translocates to the nucleus, where it acts as an RNA Pol II-specific transcriptional activator to upregulate stress resistance, proteostasis, and longevity genes. Its binding to 14-3-3 proteins reflects the cytoplasmic retention mechanism under active IIS, while its ubiquitin-related binding partners reflect regulation of its stability. Loss-of-function mutations in daf-16 completely suppress the lifespan extension seen in daf-2 (insulin receptor) mutants, and overactivation of DAF-16 is sufficient to extend lifespan, making it one of the most well-established pro-longevity genes in any model organism. Its role sits squarely within the deregulated nutrient/insulin sensing hallmark of aging.",
"confidence": 0.98,
"key_pathways": [
"Insulin/IGF-1 signaling (IIS) pathway",
"FOXO transcription factor network",
"Stress response and proteostasis gene regulation"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly identified daf-16 as pro_longevity with very high confidence (0.98). The mechanistic reasoning is excellent and accurate: DAF-16 is indeed the C. elegans FOXO transcription factor, the primary downstream effector of the insulin/IGF-1 signaling pathway. The model correctly explains the AKT phosphorylation mechanism, 14-3-3 cytoplasmic retention, nuclear translocation upon reduced IIS, and the well-established relationship with daf-2. The key pathways identified are all correct and relevant. This is one of the most well-known pro-longevity genes in aging research, and the model's reasoning reflects deep and accurate knowledge of the biology.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 5,
"ground_truth_questionable": false
}