elo-2
C. elegans
Long chain fatty acid elongase 2
What the model saw
Gene: elo-2 Organism: Caenorhabditis elegans Known functions: Long chain fatty acid elongase 2. fatty acid elongase activity.
View unredacted entry
Long chain fatty acid elongase 2. fatty acid elongase activity.
Solver output
ELO-2 is a fatty acid elongase responsible for extending long-chain fatty acids (LCFAs) into very long-chain fatty acids (VLCFAs), a key step in lipid metabolism in C. elegans. Proper LCFA/VLCFA composition is critical for membrane integrity, lipid signaling, and the regulation of nutrient-sensing pathways such as insulin/IGF-1 signaling and TORC1. In C. elegans, fatty acid desaturation and elongation enzymes (e.g., fat-6, fat-7, elo-1, elo-2) contribute to the production of polyunsaturated fatty acids (PUFAs) like eicosadienoic acid, which modulate lifespan through lipid-derived signaling molecules. Loss of elo-2 disrupts PUFA biosynthesis, which has been associated with reduced lifespan, suggesting the normal function of ELO-2 supports longevity. Additionally, VLCFA-derived lipid species can act as ligands for nuclear receptors (e.g., NHR-49/PPARα) that regulate fat metabolism and stress responses linked to 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 assumes that ELO-2 loss disrupts PUFA biosynthesis and reduces lifespan, which would make ELO-2 pro_longevity. However, the actual finding is that ELO-2 is anti_longevity, meaning its loss or reduction extends lifespan (or its overexpression shortens it). The model's mechanistic reasoning about PUFA biosynthesis and lipid signaling is plausible in general terms but leads to the wrong conclusion. The model had moderate confidence (0.62) but was still clearly wrong on both the answer and the mechanistic interpretation of ELO-2's role in longevity.
Raw API responses
solver
{
"reasoning": "ELO-2 is a fatty acid elongase responsible for extending long-chain fatty acids (LCFAs) into very long-chain fatty acids (VLCFAs), a key step in lipid metabolism in C. elegans. Proper LCFA/VLCFA composition is critical for membrane integrity, lipid signaling, and the regulation of nutrient-sensing pathways such as insulin/IGF-1 signaling and TORC1. In C. elegans, fatty acid desaturation and elongation enzymes (e.g., fat-6, fat-7, elo-1, elo-2) contribute to the production of polyunsaturated fatty acids (PUFAs) like eicosadienoic acid, which modulate lifespan through lipid-derived signaling molecules. Loss of elo-2 disrupts PUFA biosynthesis, which has been associated with reduced lifespan, suggesting the normal function of ELO-2 supports longevity. Additionally, VLCFA-derived lipid species can act as ligands for nuclear receptors (e.g., NHR-49/PPARα) that regulate fat metabolism and stress responses linked to longevity.",
"confidence": 0.62,
"key_pathways": [
"fatty acid elongation / PUFA biosynthesis",
"insulin/IGF-1 nutrient-sensing signaling",
"NHR-49/PPARα lipid metabolism regulation"
],
"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 assumes that ELO-2 loss disrupts PUFA biosynthesis and reduces lifespan, which would make ELO-2 pro_longevity. However, the actual finding is that ELO-2 is anti_longevity, meaning its loss or reduction extends lifespan (or its overexpression shortens it). The model's mechanistic reasoning about PUFA biosynthesis and lipid signaling is plausible in general terms but leads to the wrong conclusion. The model had moderate confidence (0.62) but was still clearly wrong on both the answer and the mechanistic interpretation of ELO-2's role in longevity.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}