clk-1
C. elegans
NADPH-dependent 3-demethoxyubiquinone 3-hydroxylase, mitochondrial
What the model saw
Gene: clk-1 Organism: Caenorhabditis elegans Known functions: NADPH-dependent 3-demethoxyubiquinone 3-hydroxylase, mitochondrial. 3-demethoxyubiquinone 3-hydroxylase (NADH) activity. monooxygenase activity. oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen. transcription cis-regulatory region binding.
View unredacted entry
NADPH-dependent 3-demethoxyubiquinone 3-hydroxylase, mitochondrial. 3-demethoxyubiquinone 3-hydroxylase (NADH) activity. monooxygenase activity. oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen. transcription cis-regulatory region binding.
Solver output
CLK-1 encodes a mitochondrial hydroxylase required for the biosynthesis of ubiquinone (coenzyme Q), specifically catalyzing the 3-hydroxylation of demethoxyubiquinone in the CoQ biosynthetic pathway. Loss-of-function mutations in clk-1 result in partial ubiquinone deficiency, which slows mitochondrial electron transport chain activity and reduces reactive oxygen species (ROS) production. This attenuation of mitochondrial respiration is well-established to extend lifespan in C. elegans, placing clk-1 among the canonical longevity genes. The normal (wild-type) function of CLK-1 thus supports full mitochondrial ETC flux, and its reduction—not its presence—confers longevity, meaning the gene's normal activity opposes lifespan extension. However, clk-1 is classically categorized as a pro-longevity gene because its partial loss-of-function is the defining longevity intervention, and the gene itself is considered a longevity regulator; reduced CLK-1 activity extends lifespan by dampening mitochondrial ROS and metabolic rate via the CoQ biosynthesis pathway.
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 identifies the mechanistic biology: CLK-1 is required for ubiquinone biosynthesis, and its loss-of-function extends lifespan in C. elegans. However, the model contradicts itself in its reasoning. It correctly notes that "the gene's normal activity opposes lifespan extension" (which would make it anti-longevity), but then concludes it is "pro_longevity" because "its partial loss-of-function is the defining longevity intervention." This is backwards from the GenAge convention: a gene whose loss-of-function extends lifespan is classified as anti_longevity (its normal function works against longevity). The ground truth is anti_longevity. The model's final answer is wrong despite having the correct mechanistic understanding. The reasoning quality is moderate — the model actually articulates the correct logic at one point but then reaches the wrong conclusion, seemingly confusing "longevity gene" (colloquial) with the GenAge anti_longevity classification.
Raw API responses
solver
{
"reasoning": "CLK-1 encodes a mitochondrial hydroxylase required for the biosynthesis of ubiquinone (coenzyme Q), specifically catalyzing the 3-hydroxylation of demethoxyubiquinone in the CoQ biosynthetic pathway. Loss-of-function mutations in clk-1 result in partial ubiquinone deficiency, which slows mitochondrial electron transport chain activity and reduces reactive oxygen species (ROS) production. This attenuation of mitochondrial respiration is well-established to extend lifespan in C. elegans, placing clk-1 among the canonical longevity genes. The normal (wild-type) function of CLK-1 thus supports full mitochondrial ETC flux, and its reduction—not its presence—confers longevity, meaning the gene's normal activity opposes lifespan extension. However, clk-1 is classically categorized as a pro-longevity gene because its partial loss-of-function is the defining longevity intervention, and the gene itself is considered a longevity regulator; reduced CLK-1 activity extends lifespan by dampening mitochondrial ROS and metabolic rate via the CoQ biosynthesis pathway.",
"confidence": 0.85,
"key_pathways": [
"ubiquinone (CoQ) biosynthesis",
"mitochondrial electron transport chain",
"reactive oxygen species (ROS) signaling"
],
"mechanism_class": "mitochondrial_dysfunction",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly identifies the mechanistic biology: CLK-1 is required for ubiquinone biosynthesis, and its loss-of-function extends lifespan in C. elegans. However, the model contradicts itself in its reasoning. It correctly notes that \"the gene's normal activity opposes lifespan extension\" (which would make it anti-longevity), but then concludes it is \"pro_longevity\" because \"its partial loss-of-function is the defining longevity intervention.\" This is backwards from the GenAge convention: a gene whose loss-of-function extends lifespan is classified as anti_longevity (its normal function works against longevity). The ground truth is anti_longevity. The model's final answer is wrong despite having the correct mechanistic understanding. The reasoning quality is moderate — the model actually articulates the correct logic at one point but then reaches the wrong conclusion, seemingly confusing \"longevity gene\" (colloquial) with the GenAge anti_longevity classification.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 3,
"ground_truth_questionable": false
}