let-630
C. elegans
Small ribosomal subunit protein mS39
What the model saw
Gene: let-630 Organism: Caenorhabditis elegans Known functions: Small ribosomal subunit protein mS39. rRNA binding. ribosomal small subunit binding.
View unredacted entry
Small ribosomal subunit protein mS39. rRNA binding. ribosomal small subunit binding.
Solver output
let-630 encodes the mitochondrial small ribosomal subunit protein mS39, which binds rRNA and the ribosomal small subunit to facilitate mitochondrial translation. Mitochondrial ribosome activity is a key downstream effector of nutrient-sensing pathways (TOR/insulin signaling), and elevated mitochondrial translation supports anabolic growth programs that are generally anti-longevity. In C. elegans, reduced mitochondrial ribosome function — through partial inhibition of mitoribosomal components — is well established to extend lifespan, consistent with the broader finding that attenuating translation (both cytoplasmic and mitochondrial) promotes longevity. The normal (full) function of mS39 therefore sustains mitochondrial protein synthesis at a level that opposes lifespan extension. This places let-630 in the nutrient-sensing/TOR axis, where ribosome biogenesis and translational output are the proximal effectors.
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 anti_longevity for let-630. The mechanistic reasoning is sound: let-630 encodes a mitochondrial small ribosomal subunit protein (mS39), and the model correctly identifies that reduced mitochondrial ribosome function extends lifespan in C. elegans, making the normal function of this gene anti-longevity. The connection to TOR/nutrient-sensing is reasonable but somewhat indirect — the primary mechanism is mitochondrial translation rather than nutrient sensing per se. However, the core logic (mitoribosomal activity promotes anabolic programs that oppose longevity) is well-established and correct. The confidence level of 0.72 is appropriate given the indirect nature of the evidence.
Raw API responses
solver
{
"reasoning": "let-630 encodes the mitochondrial small ribosomal subunit protein mS39, which binds rRNA and the ribosomal small subunit to facilitate mitochondrial translation. Mitochondrial ribosome activity is a key downstream effector of nutrient-sensing pathways (TOR/insulin signaling), and elevated mitochondrial translation supports anabolic growth programs that are generally anti-longevity. In C. elegans, reduced mitochondrial ribosome function — through partial inhibition of mitoribosomal components — is well established to extend lifespan, consistent with the broader finding that attenuating translation (both cytoplasmic and mitochondrial) promotes longevity. The normal (full) function of mS39 therefore sustains mitochondrial protein synthesis at a level that opposes lifespan extension. This places let-630 in the nutrient-sensing/TOR axis, where ribosome biogenesis and translational output are the proximal effectors.",
"confidence": 0.72,
"key_pathways": [
"mitochondrial translation",
"TOR/nutrient-sensing signaling",
"mitochondrial ribosome biogenesis"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model correctly predicted anti_longevity for let-630. The mechanistic reasoning is sound: let-630 encodes a mitochondrial small ribosomal subunit protein (mS39), and the model correctly identifies that reduced mitochondrial ribosome function extends lifespan in C. elegans, making the normal function of this gene anti-longevity. The connection to TOR/nutrient-sensing is reasonable but somewhat indirect — the primary mechanism is mitochondrial translation rather than nutrient sensing per se. However, the core logic (mitoribosomal activity promotes anabolic programs that oppose longevity) is well-established and correct. The confidence level of 0.72 is appropriate given the indirect nature of the evidence.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}