SEC28
S. cerevisiae
coatomer subunit epsilon
What the model saw
Gene: SEC28 Organism: Saccharomyces cerevisiae Known functions: coatomer subunit epsilon. promoter-specific chromatin binding. protein binding. structural molecule activity.
View unredacted entry
coatomer subunit epsilon. promoter-specific chromatin binding. protein binding. structural molecule activity.
Solver output
SEC28 encodes the epsilon subunit of coatomer (COPI complex), which is essential for retrograde vesicle trafficking from the Golgi to the ER. COPI-mediated vesicle transport is required for proper protein secretion and membrane trafficking; dysregulation of this pathway leads to ER stress and impaired proteostasis. In yeast aging studies, disruption of vesicle trafficking components, including COPI subunits, has been associated with altered vacuolar function and impaired autophagy flux, both of which negatively impact longevity. The structural molecule activity and protein binding roles of SEC28 support its role in maintaining coatomer complex integrity; loss of this function would impair Golgi-to-ER retrograde transport, potentially causing accumulation of misfolded proteins and ER stress. Because the normal function of SEC28 supports a trafficking pathway that, when overactive or intact, can compete with autophagic/vacuolar degradation routes, its activity is more likely to be anti-longevity in the context of yeast replicative or chronological aging.
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 SEC28, matching the ground truth. However, the mechanistic reasoning is weak and speculative. The model classified the mechanism as "altered_intercellular_communication," which is inappropriate for a yeast intracellular trafficking gene. The reasoning is largely post-hoc rationalization — the model argues that SEC28's normal function "competes with autophagic/vacuolar degradation routes" and is therefore anti-longevity, but this logic is circular and not well-supported. The actual mechanism by which SEC28 deletion extends lifespan in yeast is not clearly established in the reasoning. The model's confidence of 0.52 is appropriately low, suggesting it was essentially guessing. The correct answer was reached but the mechanistic explanation is poorly constructed and the mechanism class is wrong.
Raw API responses
solver
{
"reasoning": "SEC28 encodes the epsilon subunit of coatomer (COPI complex), which is essential for retrograde vesicle trafficking from the Golgi to the ER. COPI-mediated vesicle transport is required for proper protein secretion and membrane trafficking; dysregulation of this pathway leads to ER stress and impaired proteostasis. In yeast aging studies, disruption of vesicle trafficking components, including COPI subunits, has been associated with altered vacuolar function and impaired autophagy flux, both of which negatively impact longevity. The structural molecule activity and protein binding roles of SEC28 support its role in maintaining coatomer complex integrity; loss of this function would impair Golgi-to-ER retrograde transport, potentially causing accumulation of misfolded proteins and ER stress. Because the normal function of SEC28 supports a trafficking pathway that, when overactive or intact, can compete with autophagic/vacuolar degradation routes, its activity is more likely to be anti-longevity in the context of yeast replicative or chronological aging.",
"confidence": 0.52,
"key_pathways": [
"COPI retrograde vesicle trafficking (Golgi-to-ER)",
"coatomer complex assembly",
"ER-Golgi protein secretion pathway"
],
"mechanism_class": "altered_intercellular_communication",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model correctly predicted anti_longevity for SEC28, matching the ground truth. However, the mechanistic reasoning is weak and speculative. The model classified the mechanism as \"altered_intercellular_communication,\" which is inappropriate for a yeast intracellular trafficking gene. The reasoning is largely post-hoc rationalization — the model argues that SEC28's normal function \"competes with autophagic/vacuolar degradation routes\" and is therefore anti-longevity, but this logic is circular and not well-supported. The actual mechanism by which SEC28 deletion extends lifespan in yeast is not clearly established in the reasoning. The model's confidence of 0.52 is appropriately low, suggesting it was essentially guessing. The correct answer was reached but the mechanistic explanation is poorly constructed and the mechanism class is wrong.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}