ZDS1
S. cerevisiae
Zds1p
What the model saw
Gene: ZDS1 Organism: Saccharomyces cerevisiae Known functions: Zds1p. protein binding. protein phosphatase inhibitor activity.
View unredacted entry
Zds1p. protein binding. protein phosphatase inhibitor activity.
Solver output
ZDS1 (Zds1p) functions as a protein phosphatase inhibitor, specifically known to inhibit the PP2A-related phosphatase Cdc55/Pph21/Pph22 complexes. By inhibiting protein phosphatases, ZDS1 effectively promotes a more phosphorylated cellular state, which can hyperactivate growth-promoting kinase signaling networks such as TORC1 and PKA pathways. In yeast, sustained activation of nutrient-sensing/growth pathways (TOR, RAS/PKA) is a well-established driver of shortened chronological and replicative lifespan. Phosphatase activity (e.g., PP2A) is generally required to counterbalance these pro-aging kinase signals, so inhibiting phosphatases would tilt the balance toward accelerated aging. Thus, ZDS1's normal function as a phosphatase inhibitor is expected to oppose longevity by sustaining hyperactive nutrient-sensing signaling.
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 ZDS1. The mechanistic reasoning is sound: ZDS1 inhibits PP2A-type phosphatases, which would promote a hyperphosphorylated state and sustain pro-aging growth signaling (TOR/PKA). This is a well-established connection in yeast aging biology. The reasoning is coherent and biologically plausible, though it is somewhat speculative in connecting PP2A inhibition specifically to TOR/PKA hyperactivation (the direct mechanism may be more nuanced). Overall, the prediction and reasoning are well-grounded.
Raw API responses
solver
{
"reasoning": "ZDS1 (Zds1p) functions as a protein phosphatase inhibitor, specifically known to inhibit the PP2A-related phosphatase Cdc55/Pph21/Pph22 complexes. By inhibiting protein phosphatases, ZDS1 effectively promotes a more phosphorylated cellular state, which can hyperactivate growth-promoting kinase signaling networks such as TORC1 and PKA pathways. In yeast, sustained activation of nutrient-sensing/growth pathways (TOR, RAS/PKA) is a well-established driver of shortened chronological and replicative lifespan. Phosphatase activity (e.g., PP2A) is generally required to counterbalance these pro-aging kinase signals, so inhibiting phosphatases would tilt the balance toward accelerated aging. Thus, ZDS1's normal function as a phosphatase inhibitor is expected to oppose longevity by sustaining hyperactive nutrient-sensing signaling.",
"confidence": 0.65,
"key_pathways": [
"PP2A phosphatase inhibition",
"TOR/PKA nutrient-sensing signaling",
"replicative and chronological lifespan regulation"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model correctly predicted anti_longevity for ZDS1. The mechanistic reasoning is sound: ZDS1 inhibits PP2A-type phosphatases, which would promote a hyperphosphorylated state and sustain pro-aging growth signaling (TOR/PKA). This is a well-established connection in yeast aging biology. The reasoning is coherent and biologically plausible, though it is somewhat speculative in connecting PP2A inhibition specifically to TOR/PKA hyperactivation (the direct mechanism may be more nuanced). Overall, the prediction and reasoning are well-grounded.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}