nstp-3
C. elegans
UDP-galactose transporter
What the model saw
Gene: nstp-3 Organism: Caenorhabditis elegans Known functions: UDP-galactose transporter. UDP-galactose transmembrane transporter activity. pyrimidine nucleotide-sugar transmembrane transporter activity.
View unredacted entry
UDP-galactose transporter. UDP-galactose transmembrane transporter activity. pyrimidine nucleotide-sugar transmembrane transporter activity.
Solver output
nstp-3 encodes a UDP-galactose transporter localized to the Golgi membrane, responsible for importing UDP-galactose (and other pyrimidine nucleotide-sugars) into the Golgi lumen to support glycosylation reactions. While proper glycosylation is essential for proteostasis and intercellular communication, the specific role of UDP-galactose transport in C. elegans longevity is not clearly established. Galactosylation affects glycoprotein folding and cell surface signaling, but loss or gain of this transporter could have pleiotropic effects on multiple pathways without a clear directional prediction for lifespan. No canonical longevity pathway (e.g., insulin/IGF-1, TOR, mitochondrial) is directly and specifically regulated by UDP-galactose transport activity alone, making a confident directional call difficult.
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" while the ground truth is "pro_longevity." The model's reasoning about UDP-galactose transport and glycosylation is mechanistically plausible but doesn't arrive at the correct directional conclusion. The model appropriately acknowledged uncertainty given the limited direct evidence linking nstp-3 to longevity pathways, but ultimately failed to predict the correct pro-longevity influence. The confidence of 0.35 reflects genuine uncertainty, making this an "appropriately uncertain" failure rather than a confident wrong answer. The mechanistic reasoning about glycosylation and Golgi transport is reasonable but incomplete since it doesn't identify the specific pro-longevity mechanism.
Raw API responses
solver
{
"reasoning": "nstp-3 encodes a UDP-galactose transporter localized to the Golgi membrane, responsible for importing UDP-galactose (and other pyrimidine nucleotide-sugars) into the Golgi lumen to support glycosylation reactions. While proper glycosylation is essential for proteostasis and intercellular communication, the specific role of UDP-galactose transport in C. elegans longevity is not clearly established. Galactosylation affects glycoprotein folding and cell surface signaling, but loss or gain of this transporter could have pleiotropic effects on multiple pathways without a clear directional prediction for lifespan. No canonical longevity pathway (e.g., insulin/IGF-1, TOR, mitochondrial) is directly and specifically regulated by UDP-galactose transport activity alone, making a confident directional call difficult.",
"confidence": 0.35,
"key_pathways": [
"Golgi UDP-sugar transport",
"protein glycosylation",
"nucleotide-sugar metabolism"
],
"mechanism_class": "other",
"longevity_influence": "unclear"
}advisor
{
"notes": "The model predicted \"unclear\" while the ground truth is \"pro_longevity.\" The model's reasoning about UDP-galactose transport and glycosylation is mechanistically plausible but doesn't arrive at the correct directional conclusion. The model appropriately acknowledged uncertainty given the limited direct evidence linking nstp-3 to longevity pathways, but ultimately failed to predict the correct pro-longevity influence. The confidence of 0.35 reflects genuine uncertainty, making this an \"appropriately uncertain\" failure rather than a confident wrong answer. The mechanistic reasoning about glycosylation and Golgi transport is reasonable but incomplete since it doesn't identify the specific pro-longevity mechanism.",
"failure_mode": "appropriately_uncertain",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}