SKN1
S. cerevisiae
beta-glucan synthesis-associated protein SKN1
What the model saw
Gene: SKN1 Organism: Saccharomyces cerevisiae Known functions: beta-glucan synthesis-associated protein SKN1. glucosidase activity. hydrolase activity, hydrolyzing O-glycosyl compounds.
View unredacted entry
beta-glucan synthesis-associated protein SKN1. glucosidase activity. hydrolase activity, hydrolyzing O-glycosyl compounds.
Solver output
SKN1 encodes a beta-glucan synthesis-associated protein with glucosidase and O-glycosyl hydrolase activity in S. cerevisiae, placing it in cell wall biosynthesis and remodeling. Beta-glucan is a major structural component of the yeast cell wall, and SKN1 is a paralog of KRE6 involved in beta-1,6-glucan synthesis. While cell wall integrity is important for yeast fitness, this function does not map cleanly onto canonical longevity-promoting or longevity-opposing pathways such as nutrient sensing, proteostasis, or mitochondrial function. There is no strong evidence that SKN1's glucosidase/hydrolase activity directly modulates replicative or chronological lifespan through a well-characterized aging mechanism, making a directional prediction unreliable.
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 (0.35), while the ground truth is "anti_longevity." The model correctly identified SKN1's role in beta-glucan synthesis and cell wall biology, but failed to make a directional prediction. The reasoning that cell wall functions don't map onto canonical aging pathways is understandable but ultimately led to an incorrect non-answer. The ground truth indicates SKN1 is anti-longevity (deletion likely extends lifespan), which the model did not predict. The model's uncertainty was somewhat appropriate given the limited information provided, but it still missed the correct answer.
Raw API responses
solver
{
"reasoning": "SKN1 encodes a beta-glucan synthesis-associated protein with glucosidase and O-glycosyl hydrolase activity in S. cerevisiae, placing it in cell wall biosynthesis and remodeling. Beta-glucan is a major structural component of the yeast cell wall, and SKN1 is a paralog of KRE6 involved in beta-1,6-glucan synthesis. While cell wall integrity is important for yeast fitness, this function does not map cleanly onto canonical longevity-promoting or longevity-opposing pathways such as nutrient sensing, proteostasis, or mitochondrial function. There is no strong evidence that SKN1's glucosidase/hydrolase activity directly modulates replicative or chronological lifespan through a well-characterized aging mechanism, making a directional prediction unreliable.",
"confidence": 0.35,
"key_pathways": [
"beta-1,6-glucan biosynthesis",
"cell wall integrity signaling",
"O-glycosyl hydrolysis"
],
"mechanism_class": "other",
"longevity_influence": "unclear"
}advisor
{
"notes": "The model predicted \"unclear\" with low confidence (0.35), while the ground truth is \"anti_longevity.\" The model correctly identified SKN1's role in beta-glucan synthesis and cell wall biology, but failed to make a directional prediction. The reasoning that cell wall functions don't map onto canonical aging pathways is understandable but ultimately led to an incorrect non-answer. The ground truth indicates SKN1 is anti-longevity (deletion likely extends lifespan), which the model did not predict. The model's uncertainty was somewhat appropriate given the limited information provided, but it still missed the correct answer.",
"failure_mode": "appropriately_uncertain",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}