VPS5
S. cerevisiae
sorting nexin 1
What the model saw
Gene: VPS5 Organism: Saccharomyces cerevisiae Known functions: sorting nexin 1. cargo adaptor activity. phosphatidylinositol binding. phosphatidylinositol-3-phosphate binding. protein binding.
View unredacted entry
sorting nexin 1. cargo adaptor activity. phosphatidylinositol binding. phosphatidylinositol-3-phosphate binding. protein binding.
Solver output
VPS5 is a sorting nexin (SNX1 ortholog) and core component of the retromer complex in S. cerevisiae, where it functions as a cargo adaptor that binds phosphatidylinositol-3-phosphate (PI3P) via its PX domain to facilitate endosomal cargo sorting and retrograde trafficking. Proper retromer function is essential for recycling vacuolar hydrolase receptors (e.g., Vps10/carboxypeptidase Y pathway) back to the Golgi, maintaining vacuolar/lysosomal proteolytic capacity and proteostasis. Loss of retromer function impairs vacuolar protein sorting, disrupts autophagy flux, and accelerates aging phenotypes in yeast; conversely, intact retromer activity supports proteostasis and has been linked to extended replicative lifespan. The PI3P-binding activity of VPS5 is mechanistically tied to the PI3-kinase Vps34 pathway, a key node in nutrient sensing and autophagy regulation. Thus, VPS5's normal function in endosomal recycling supports vacuolar integrity and proteostasis, both of which are pro-longevity.
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 VPS5 as pro_longevity, but the ground truth is anti_longevity. The model's reasoning is plausible on the surface - VPS5 is indeed a sorting nexin and retromer component involved in endosomal cargo sorting and PI3P binding. However, the model incorrectly concluded that VPS5's normal function supports longevity. In GenAge, VPS5 is classified as anti_longevity, meaning its deletion or loss extends lifespan (or its presence shortens lifespan). The model's mechanistic reasoning about retromer function supporting proteostasis and vacuolar integrity is reasonable in general terms, but it failed to account for the actual experimental evidence showing VPS5 has an anti-longevity role in yeast. The model was fairly confident (0.72) in the wrong direction. The reasoning quality is moderate - it shows good knowledge of VPS5's molecular functions but draws the wrong conclusion about its longevity influence.
Raw API responses
solver
{
"reasoning": "VPS5 is a sorting nexin (SNX1 ortholog) and core component of the retromer complex in S. cerevisiae, where it functions as a cargo adaptor that binds phosphatidylinositol-3-phosphate (PI3P) via its PX domain to facilitate endosomal cargo sorting and retrograde trafficking. Proper retromer function is essential for recycling vacuolar hydrolase receptors (e.g., Vps10/carboxypeptidase Y pathway) back to the Golgi, maintaining vacuolar/lysosomal proteolytic capacity and proteostasis. Loss of retromer function impairs vacuolar protein sorting, disrupts autophagy flux, and accelerates aging phenotypes in yeast; conversely, intact retromer activity supports proteostasis and has been linked to extended replicative lifespan. The PI3P-binding activity of VPS5 is mechanistically tied to the PI3-kinase Vps34 pathway, a key node in nutrient sensing and autophagy regulation. Thus, VPS5's normal function in endosomal recycling supports vacuolar integrity and proteostasis, both of which are pro-longevity.",
"confidence": 0.72,
"key_pathways": [
"Retromer-mediated endosomal cargo recycling",
"Vacuolar protein sorting (VPS pathway)",
"PI3P/Vps34 signaling and autophagy flux"
],
"mechanism_class": "disabled_macroautophagy",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted VPS5 as pro_longevity, but the ground truth is anti_longevity. The model's reasoning is plausible on the surface - VPS5 is indeed a sorting nexin and retromer component involved in endosomal cargo sorting and PI3P binding. However, the model incorrectly concluded that VPS5's normal function supports longevity. In GenAge, VPS5 is classified as anti_longevity, meaning its deletion or loss extends lifespan (or its presence shortens lifespan). The model's mechanistic reasoning about retromer function supporting proteostasis and vacuolar integrity is reasonable in general terms, but it failed to account for the actual experimental evidence showing VPS5 has an anti-longevity role in yeast. The model was fairly confident (0.72) in the wrong direction. The reasoning quality is moderate - it shows good knowledge of VPS5's molecular functions but draws the wrong conclusion about its longevity influence.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 3,
"ground_truth_questionable": false
}