let-502
C. elegans
Rho-associated protein kinase let-502
What the model saw
Gene: let-502 Organism: Caenorhabditis elegans Known functions: Rho-associated protein kinase let-502. ATP binding. Rho-dependent protein serine/threonine kinase activity. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity. small GTPase binding.
View unredacted entry
Rho-associated protein kinase let-502. ATP binding. Rho-dependent protein serine/threonine kinase activity. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity. small GTPase binding.
Solver output
let-502 encodes the C. elegans ortholog of ROCK (Rho-associated coiled-coil kinase), which is activated downstream of Rho small GTPases and phosphorylates serine/threonine residues on targets such as myosin light chain phosphatase (MLCP) and LIM kinase. ROCK signaling promotes actomyosin contractility and cytoskeletal tension, and in the context of aging, elevated Rho/ROCK activity has been linked to pro-senescence signaling, impaired autophagy flux, and reduced cellular plasticity. In C. elegans, hyperactivation of let-502/ROCK has been associated with reduced lifespan, while its inhibition or loss-of-function can extend longevity by modulating cytoskeletal dynamics and stress responses. The Rho-ROCK axis also intersects with insulin/IGF-1-like signaling and mitochondrial fission pathways, both of which are central regulators of C. elegans lifespan. Thus, the normal (active) function of let-502 is predicted to oppose 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 anti_longevity for let-502, but the ground truth is pro_longevity. The model's reasoning about ROCK signaling promoting senescence and reducing lifespan is plausible in mammalian contexts but appears to be incorrect for C. elegans let-502. The model even states "hyperactivation of let-502/ROCK has been associated with reduced lifespan, while its inhibition or loss-of-function can extend longevity" — which would make let-502 anti_longevity — but the ground truth says it is pro_longevity. The mechanistic reasoning is also questionable: the model invokes "cellular senescence" as the mechanism class, which is not a well-established concept in C. elegans (a post-mitotic organism). The model appears to have applied mammalian ROCK biology inappropriately to C. elegans, and the specific claim about let-502 inhibition extending lifespan appears to be fabricated or confused. The confidence of 0.65 is moderate but still wrong.
Raw API responses
solver
{
"reasoning": "let-502 encodes the C. elegans ortholog of ROCK (Rho-associated coiled-coil kinase), which is activated downstream of Rho small GTPases and phosphorylates serine/threonine residues on targets such as myosin light chain phosphatase (MLCP) and LIM kinase. ROCK signaling promotes actomyosin contractility and cytoskeletal tension, and in the context of aging, elevated Rho/ROCK activity has been linked to pro-senescence signaling, impaired autophagy flux, and reduced cellular plasticity. In C. elegans, hyperactivation of let-502/ROCK has been associated with reduced lifespan, while its inhibition or loss-of-function can extend longevity by modulating cytoskeletal dynamics and stress responses. The Rho-ROCK axis also intersects with insulin/IGF-1-like signaling and mitochondrial fission pathways, both of which are central regulators of C. elegans lifespan. Thus, the normal (active) function of let-502 is predicted to oppose longevity.",
"confidence": 0.65,
"key_pathways": [
"Rho/ROCK signaling and actomyosin contractility",
"cytoskeletal tension and cellular senescence",
"insulin/IGF-1-like longevity pathway modulation"
],
"mechanism_class": "cellular_senescence",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity for let-502, but the ground truth is pro_longevity. The model's reasoning about ROCK signaling promoting senescence and reducing lifespan is plausible in mammalian contexts but appears to be incorrect for C. elegans let-502. The model even states \"hyperactivation of let-502/ROCK has been associated with reduced lifespan, while its inhibition or loss-of-function can extend longevity\" — which would make let-502 anti_longevity — but the ground truth says it is pro_longevity. The mechanistic reasoning is also questionable: the model invokes \"cellular senescence\" as the mechanism class, which is not a well-established concept in C. elegans (a post-mitotic organism). The model appears to have applied mammalian ROCK biology inappropriately to C. elegans, and the specific claim about let-502 inhibition extending lifespan appears to be fabricated or confused. The confidence of 0.65 is moderate but still wrong.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}