mod-5
C. elegans
Transporter
What the model saw
Gene: mod-5 Organism: Caenorhabditis elegans Known functions: Transporter. serotonin binding. serotonin:sodium:chloride symporter activity.
View unredacted entry
Transporter. serotonin binding. serotonin:sodium:chloride symporter activity.
Solver output
mod-5 encodes the C. elegans serotonin reuptake transporter (SERT), responsible for clearing synaptic serotonin via Na+/Cl−-coupled symport. Serotonin signaling in C. elegans is a key modulator of feeding behavior and nutrient-sensing pathways: elevated serotonin promotes food-sensing signals that stimulate feeding and activate insulin/IGF-1-like signaling (IIS), which is a major pro-aging pathway. Loss of mod-5 increases synaptic serotonin, which enhances IIS activity and reduces DAF-16/FOXO nuclear localization, thereby shortening lifespan. Conversely, normal mod-5 function dampens serotonergic tone, restraining IIS and supporting DAF-16-mediated stress resistance and longevity. Additionally, serotonin signaling intersects with dietary restriction pathways; proper reuptake via mod-5 helps maintain the balance between fed and fasted signaling states that influence lifespan in C. elegans.
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 predicts mod-5 as pro_longevity, matching the ground truth. However, the mechanistic reasoning is questionable and appears to be largely speculative/constructed. The model claims that mod-5 (SERT) promotes longevity by dampening serotonergic tone and restraining IIS/DAF-16 signaling. In reality, the actual mechanism by which mod-5 loss-of-function or gain-of-function affects lifespan in C. elegans is more nuanced. The actual literature suggests that mod-5 mutants (loss of serotonin reuptake) can have complex effects, and the pro-longevity classification likely relates to specific experimental contexts. The model's reasoning that "normal mod-5 function dampens serotonergic tone, restraining IIS and supporting DAF-16-mediated stress resistance" is a plausible-sounding but largely constructed narrative without strong experimental backing. The mechanism class "deregulated_nutrient_sensing" is a reasonable guess but not specifically validated. The reasoning quality is low because it builds a speculative chain of logic rather than citing established experimental findings about mod-5's role in longevity.
Raw API responses
solver
{
"reasoning": "mod-5 encodes the C. elegans serotonin reuptake transporter (SERT), responsible for clearing synaptic serotonin via Na+/Cl−-coupled symport. Serotonin signaling in C. elegans is a key modulator of feeding behavior and nutrient-sensing pathways: elevated serotonin promotes food-sensing signals that stimulate feeding and activate insulin/IGF-1-like signaling (IIS), which is a major pro-aging pathway. Loss of mod-5 increases synaptic serotonin, which enhances IIS activity and reduces DAF-16/FOXO nuclear localization, thereby shortening lifespan. Conversely, normal mod-5 function dampens serotonergic tone, restraining IIS and supporting DAF-16-mediated stress resistance and longevity. Additionally, serotonin signaling intersects with dietary restriction pathways; proper reuptake via mod-5 helps maintain the balance between fed and fasted signaling states that influence lifespan in C. elegans.",
"confidence": 0.62,
"key_pathways": [
"serotonin reuptake / serotonergic signaling",
"insulin/IGF-1 signaling (IIS) / DAF-16 FOXO",
"nutrient sensing and feeding behavior"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicts mod-5 as pro_longevity, matching the ground truth. However, the mechanistic reasoning is questionable and appears to be largely speculative/constructed. The model claims that mod-5 (SERT) promotes longevity by dampening serotonergic tone and restraining IIS/DAF-16 signaling. In reality, the actual mechanism by which mod-5 loss-of-function or gain-of-function affects lifespan in C. elegans is more nuanced. The actual literature suggests that mod-5 mutants (loss of serotonin reuptake) can have complex effects, and the pro-longevity classification likely relates to specific experimental contexts. The model's reasoning that \"normal mod-5 function dampens serotonergic tone, restraining IIS and supporting DAF-16-mediated stress resistance\" is a plausible-sounding but largely constructed narrative without strong experimental backing. The mechanism class \"deregulated_nutrient_sensing\" is a reasonable guess but not specifically validated. The reasoning quality is low because it builds a speculative chain of logic rather than citing established experimental findings about mod-5's role in longevity.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}