ncs1
S. pombe
calcium-binding protein
What the model saw
Gene: ncs1 Organism: Schizosaccharomyces pombe Known functions: calcium-binding protein. 1-phosphatidylinositol 4-kinase activator activity. calcium ion binding. protein binding.
View unredacted entry
calcium-binding protein. 1-phosphatidylinositol 4-kinase activator activity. calcium ion binding. protein binding.
Solver output
NCS1 (Neuronal Calcium Sensor 1) is a calcium-binding protein that activates phosphatidylinositol 4-kinase (PI4K), thereby promoting PI4P production at membranes. PI4P is a critical precursor for phosphoinositide signaling, which feeds into TOR (Target of Rapamycin) pathway regulation and membrane trafficking. In yeast, PI4K activity (Pik1/Stt4) is essential for proper vesicular trafficking and TORC2 signaling; NCS1-mediated activation of PI4K supports balanced nutrient sensing and membrane homeostasis. Additionally, calcium signaling through NCS1 modulates calcineurin and other downstream effectors that regulate stress responses and cellular homeostasis, which are broadly pro-longevity. Loss of NCS1 function in yeast models has been associated with reduced fitness and stress tolerance, suggesting its normal activity supports longevity.
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 pro_longevity but the ground truth is anti_longevity. The model's reasoning about NCS1 activating PI4K and supporting longevity through TOR pathway regulation and calcium signaling is plausible-sounding but ultimately incorrect. The model assumed that loss of NCS1 reduces fitness/stress tolerance (pro-longevity role), but in S. pombe, ncs1 is actually anti-longevity, meaning its deletion or reduction likely extends lifespan. The model's confidence of 0.62 is moderate but still committed to the wrong answer. The mechanistic reasoning is also incorrect in its conclusion - NCS1's PI4K activation and calcium signaling appear to be detrimental to longevity in this organism, not beneficial.
Raw API responses
solver
{
"reasoning": "NCS1 (Neuronal Calcium Sensor 1) is a calcium-binding protein that activates phosphatidylinositol 4-kinase (PI4K), thereby promoting PI4P production at membranes. PI4P is a critical precursor for phosphoinositide signaling, which feeds into TOR (Target of Rapamycin) pathway regulation and membrane trafficking. In yeast, PI4K activity (Pik1/Stt4) is essential for proper vesicular trafficking and TORC2 signaling; NCS1-mediated activation of PI4K supports balanced nutrient sensing and membrane homeostasis. Additionally, calcium signaling through NCS1 modulates calcineurin and other downstream effectors that regulate stress responses and cellular homeostasis, which are broadly pro-longevity. Loss of NCS1 function in yeast models has been associated with reduced fitness and stress tolerance, suggesting its normal activity supports longevity.",
"confidence": 0.62,
"key_pathways": [
"phosphatidylinositol 4-kinase / PI4P signaling",
"calcium-dependent nutrient sensing",
"TOR pathway regulation via phosphoinositide metabolism"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted pro_longevity but the ground truth is anti_longevity. The model's reasoning about NCS1 activating PI4K and supporting longevity through TOR pathway regulation and calcium signaling is plausible-sounding but ultimately incorrect. The model assumed that loss of NCS1 reduces fitness/stress tolerance (pro-longevity role), but in S. pombe, ncs1 is actually anti-longevity, meaning its deletion or reduction likely extends lifespan. The model's confidence of 0.62 is moderate but still committed to the wrong answer. The mechanistic reasoning is also incorrect in its conclusion - NCS1's PI4K activation and calcium signaling appear to be detrimental to longevity in this organism, not beneficial.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}