hpk-1
C. elegans
Homeodomain-interacting protein kinase 1
What the model saw
Gene: hpk-1 Organism: Caenorhabditis elegans Known functions: Homeodomain-interacting protein kinase 1. ATP binding. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity. protein tyrosine kinase activity.
View unredacted entry
Homeodomain-interacting protein kinase 1. ATP binding. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity. protein tyrosine kinase activity.
Solver output
HPK-1 (Homeodomain-interacting protein kinase 1) is a serine/threonine/tyrosine kinase that in C. elegans has been shown to act as a negative regulator of the DAF-16/FOXO transcription factor pathway. By phosphorylating and inhibiting DAF-16, HPK-1 dampens the insulin/IGF-1 signaling (IIS) longevity pathway, which is the central nutrient-sensing axis governing lifespan in C. elegans. Loss-of-function of hpk-1 leads to nuclear accumulation of DAF-16 and extended lifespan, consistent with an anti-longevity role for the normal (active) kinase. The ATP-binding and dual serine/threonine and tyrosine kinase activities support its role as a direct upstream regulator of FOXO/DAF-16 phosphorylation status. This places HPK-1 functionally analogous to other kinases (e.g., AKT) that suppress DAF-16 nuclear activity and thus oppose longevity when active.
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 mechanistic reasoning is also incorrect - it claims HPK-1 acts as a negative regulator of DAF-16/FOXO (analogous to AKT), but the actual literature shows HPK-1 is a positive regulator of longevity in C. elegans. Research has shown that HPK-1 promotes longevity, likely through positive regulation of stress response pathways or DAF-16 activity, not inhibition of it. The model constructed a plausible-sounding but incorrect mechanism, confidently asserting that loss-of-function extends lifespan (which would make it anti-longevity), when in fact HPK-1 overexpression or normal function promotes longevity. The model was fairly confident (0.72) in its wrong answer.
Raw API responses
solver
{
"reasoning": "HPK-1 (Homeodomain-interacting protein kinase 1) is a serine/threonine/tyrosine kinase that in C. elegans has been shown to act as a negative regulator of the DAF-16/FOXO transcription factor pathway. By phosphorylating and inhibiting DAF-16, HPK-1 dampens the insulin/IGF-1 signaling (IIS) longevity pathway, which is the central nutrient-sensing axis governing lifespan in C. elegans. Loss-of-function of hpk-1 leads to nuclear accumulation of DAF-16 and extended lifespan, consistent with an anti-longevity role for the normal (active) kinase. The ATP-binding and dual serine/threonine and tyrosine kinase activities support its role as a direct upstream regulator of FOXO/DAF-16 phosphorylation status. This places HPK-1 functionally analogous to other kinases (e.g., AKT) that suppress DAF-16 nuclear activity and thus oppose longevity when active.",
"confidence": 0.72,
"key_pathways": [
"insulin/IGF-1 signaling (IIS) pathway",
"DAF-16/FOXO transcription factor regulation",
"nutrient-sensing kinase cascade"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity but the ground truth is pro_longevity. The model's mechanistic reasoning is also incorrect - it claims HPK-1 acts as a negative regulator of DAF-16/FOXO (analogous to AKT), but the actual literature shows HPK-1 is a positive regulator of longevity in C. elegans. Research has shown that HPK-1 promotes longevity, likely through positive regulation of stress response pathways or DAF-16 activity, not inhibition of it. The model constructed a plausible-sounding but incorrect mechanism, confidently asserting that loss-of-function extends lifespan (which would make it anti-longevity), when in fact HPK-1 overexpression or normal function promotes longevity. The model was fairly confident (0.72) in its wrong answer.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}