fabp
D. melanogaster
fatty acid binding protein
What the model saw
Gene: fabp Organism: Drosophila melanogaster Known functions: fatty acid binding protein. fatty acid binding. lipid binding.
View unredacted entry
fatty acid binding protein. fatty acid binding. lipid binding.
Solver output
Fatty acid binding proteins (FABPs) are intracellular lipid chaperones that shuttle fatty acids to specific organelles and regulate lipid metabolism, signaling, and gene expression. In Drosophila, fabp facilitates intracellular fatty acid transport, which can influence lipid homeostasis and nutrient sensing pathways such as insulin/IGF-1 signaling and TOR. However, FABPs can have dual roles: promoting healthy lipid metabolism and mitochondrial fatty acid oxidation (pro-longevity) while also potentially facilitating lipotoxic lipid accumulation or inflammatory lipid signaling (anti-longevity). The available annotations (fatty acid binding, lipid binding) are insufficient to distinguish whether fabp's primary in vivo role in Drosophila promotes or opposes longevity, as the net effect depends on which lipid species are chaperoned and in which tissue context.
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 "unclear" with low confidence (0.4), but the ground truth is "pro_longevity." The model's reasoning about FABPs having dual roles is plausible in general but fails to commit to the correct answer. The model correctly identifies relevant pathways (lipid homeostasis, fatty acid transport, insulin/IGF-1 signaling) but hedges excessively rather than leaning toward pro-longevity, which is the established effect. The mechanistic reasoning is generic and doesn't reflect specific knowledge about Drosophila fabp's role in longevity. This is an "appropriately uncertain" failure mode in the sense that the model acknowledged uncertainty, but it still got the answer wrong when a definitive answer exists in the literature.
Raw API responses
solver
{
"reasoning": "Fatty acid binding proteins (FABPs) are intracellular lipid chaperones that shuttle fatty acids to specific organelles and regulate lipid metabolism, signaling, and gene expression. In Drosophila, fabp facilitates intracellular fatty acid transport, which can influence lipid homeostasis and nutrient sensing pathways such as insulin/IGF-1 signaling and TOR. However, FABPs can have dual roles: promoting healthy lipid metabolism and mitochondrial fatty acid oxidation (pro-longevity) while also potentially facilitating lipotoxic lipid accumulation or inflammatory lipid signaling (anti-longevity). The available annotations (fatty acid binding, lipid binding) are insufficient to distinguish whether fabp's primary in vivo role in Drosophila promotes or opposes longevity, as the net effect depends on which lipid species are chaperoned and in which tissue context.",
"confidence": 0.4,
"key_pathways": [
"intracellular fatty acid transport",
"lipid homeostasis",
"insulin/IGF-1 nutrient sensing"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "unclear"
}advisor
{
"notes": "The model predicted \"unclear\" with low confidence (0.4), but the ground truth is \"pro_longevity.\" The model's reasoning about FABPs having dual roles is plausible in general but fails to commit to the correct answer. The model correctly identifies relevant pathways (lipid homeostasis, fatty acid transport, insulin/IGF-1 signaling) but hedges excessively rather than leaning toward pro-longevity, which is the established effect. The mechanistic reasoning is generic and doesn't reflect specific knowledge about Drosophila fabp's role in longevity. This is an \"appropriately uncertain\" failure mode in the sense that the model acknowledged uncertainty, but it still got the answer wrong when a definitive answer exists in the literature.",
"failure_mode": "appropriately_uncertain",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}