pnk-1
C. elegans
Pantothenate kinase;pantothenate kinase
What the model saw
Gene: pnk-1 Organism: Caenorhabditis elegans Known functions: Pantothenate kinase;pantothenate kinase. ATP binding. pantothenate kinase activity. phosphatase activity.
View unredacted entry
Pantothenate kinase;pantothenate kinase. ATP binding. pantothenate kinase activity. phosphatase activity.
Solver output
Pantothenate kinase (PNK-1) catalyzes the rate-limiting, first committed step in Coenzyme A (CoA) biosynthesis by phosphorylating pantothenate (vitamin B5) in an ATP-dependent manner. CoA is an essential cofactor for central metabolic pathways including the TCA cycle, fatty acid oxidation and synthesis, and acetyl-CoA-dependent reactions. Adequate CoA levels are critical for mitochondrial energy metabolism and for acetyl-CoA availability, which directly feeds into histone acetylation and epigenetic regulation. Loss of pantothenate kinase activity leads to CoA deficiency, impaired mitochondrial function, and metabolic dysregulation — phenotypes associated with accelerated aging. In model organisms, CoA biosynthesis supports lipid homeostasis and energy sensing pathways (e.g., AMPK activation), and pantothenate supplementation has been linked to lifespan extension, placing pnk-1's normal function firmly in the pro-longevity category.
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 pnk-1. The mechanistic reasoning is sound and well-grounded: pantothenate kinase catalyzes the rate-limiting step in CoA biosynthesis, and CoA is essential for mitochondrial energy metabolism, fatty acid oxidation, and acetyl-CoA-dependent processes. The model correctly reasons that loss of pnk-1 function would impair these pathways and lead to accelerated aging phenotypes. The classification as "deregulated_nutrient_sensing" is a reasonable fit given CoA's role in metabolic sensing. The reasoning is detailed and biologically accurate, though the specific claim about "pantothenate supplementation linked to lifespan extension" is somewhat speculative and not directly cited. Overall, a strong and well-reasoned prediction.
Raw API responses
solver
{
"reasoning": "Pantothenate kinase (PNK-1) catalyzes the rate-limiting, first committed step in Coenzyme A (CoA) biosynthesis by phosphorylating pantothenate (vitamin B5) in an ATP-dependent manner. CoA is an essential cofactor for central metabolic pathways including the TCA cycle, fatty acid oxidation and synthesis, and acetyl-CoA-dependent reactions. Adequate CoA levels are critical for mitochondrial energy metabolism and for acetyl-CoA availability, which directly feeds into histone acetylation and epigenetic regulation. Loss of pantothenate kinase activity leads to CoA deficiency, impaired mitochondrial function, and metabolic dysregulation — phenotypes associated with accelerated aging. In model organisms, CoA biosynthesis supports lipid homeostasis and energy sensing pathways (e.g., AMPK activation), and pantothenate supplementation has been linked to lifespan extension, placing pnk-1's normal function firmly in the pro-longevity category.",
"confidence": 0.72,
"key_pathways": [
"Coenzyme A biosynthesis",
"Mitochondrial fatty acid oxidation and TCA cycle",
"Acetyl-CoA-dependent metabolic and epigenetic regulation"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for pnk-1. The mechanistic reasoning is sound and well-grounded: pantothenate kinase catalyzes the rate-limiting step in CoA biosynthesis, and CoA is essential for mitochondrial energy metabolism, fatty acid oxidation, and acetyl-CoA-dependent processes. The model correctly reasons that loss of pnk-1 function would impair these pathways and lead to accelerated aging phenotypes. The classification as \"deregulated_nutrient_sensing\" is a reasonable fit given CoA's role in metabolic sensing. The reasoning is detailed and biologically accurate, though the specific claim about \"pantothenate supplementation linked to lifespan extension\" is somewhat speculative and not directly cited. Overall, a strong and well-reasoned prediction.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}