ERO1
S. cerevisiae
ER oxidoreductin
What the model saw
Gene: ERO1 Organism: Saccharomyces cerevisiae Known functions: ER oxidoreductin. FAD binding. flavin-dependent sulfhydryl oxidase activity. protein-disulfide reductase activity. thiol oxidase activity.
View unredacted entry
ER oxidoreductin. FAD binding. flavin-dependent sulfhydryl oxidase activity. protein-disulfide reductase activity. thiol oxidase activity.
Solver output
ERO1 encodes the primary ER oxidoreductin in yeast, which uses FAD as a cofactor to drive oxidative protein folding in the ER by reoxidizing PDI (protein disulfide isomerase) via its flavin-dependent thiol oxidase activity. While ERO1 is essential for disulfide bond formation and thus proteostasis, its activity is a major source of reactive oxygen species (ROS) in the ER, as electrons are transferred from thiols through FAD to molecular oxygen, generating hydrogen peroxide as a byproduct. Chronic or elevated ERO1 activity therefore promotes oxidative stress within the ER lumen and can trigger the unfolded protein response (UPR). Overactive ERO1 has been linked to ER stress and increased oxidative burden, both of which are associated with accelerated aging phenotypes. In yeast aging models, elevated ER-derived ROS production and ER stress are detrimental to replicative and chronological lifespan, placing ERO1 in a net anti-longevity role when its activity is dysregulated or constitutively high.
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 ERO1. The mechanistic reasoning is sound and well-articulated: ERO1's FAD-dependent thiol oxidase activity generates ROS (H2O2) as a byproduct of oxidative protein folding, contributing to ER stress and oxidative burden that can accelerate aging. The model appropriately connects ERO1 overactivity to UPR activation and increased oxidative stress. The reasoning is plausible and consistent with known biology, though the model frames it somewhat speculatively ("when its activity is dysregulated or constitutively high") rather than citing specific yeast lifespan experiments. The confidence of 0.65 is appropriately moderate given the complexity. Overall a strong, well-reasoned correct prediction.
Raw API responses
solver
{
"reasoning": "ERO1 encodes the primary ER oxidoreductin in yeast, which uses FAD as a cofactor to drive oxidative protein folding in the ER by reoxidizing PDI (protein disulfide isomerase) via its flavin-dependent thiol oxidase activity. While ERO1 is essential for disulfide bond formation and thus proteostasis, its activity is a major source of reactive oxygen species (ROS) in the ER, as electrons are transferred from thiols through FAD to molecular oxygen, generating hydrogen peroxide as a byproduct. Chronic or elevated ERO1 activity therefore promotes oxidative stress within the ER lumen and can trigger the unfolded protein response (UPR). Overactive ERO1 has been linked to ER stress and increased oxidative burden, both of which are associated with accelerated aging phenotypes. In yeast aging models, elevated ER-derived ROS production and ER stress are detrimental to replicative and chronological lifespan, placing ERO1 in a net anti-longevity role when its activity is dysregulated or constitutively high.",
"confidence": 0.65,
"key_pathways": [
"ER oxidative protein folding (PDI-ERO1 relay)",
"ER stress / Unfolded Protein Response (UPR)",
"ROS generation via FAD-dependent thiol oxidase activity"
],
"mechanism_class": "loss_of_proteostasis",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model correctly predicted anti_longevity for ERO1. The mechanistic reasoning is sound and well-articulated: ERO1's FAD-dependent thiol oxidase activity generates ROS (H2O2) as a byproduct of oxidative protein folding, contributing to ER stress and oxidative burden that can accelerate aging. The model appropriately connects ERO1 overactivity to UPR activation and increased oxidative stress. The reasoning is plausible and consistent with known biology, though the model frames it somewhat speculatively (\"when its activity is dysregulated or constitutively high\") rather than citing specific yeast lifespan experiments. The confidence of 0.65 is appropriately moderate given the complexity. Overall a strong, well-reasoned correct prediction.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}