sbt-1
C. elegans
Neuroendocrine protein 7B2
What the model saw
Gene: sbt-1 Organism: Caenorhabditis elegans Known functions: Neuroendocrine protein 7B2. enzyme regulator activity. peptidase activator activity. peptidase inhibitor activity.
View unredacted entry
Neuroendocrine protein 7B2. enzyme regulator activity. peptidase activator activity. peptidase inhibitor activity.
Solver output
sbt-1 encodes the C. elegans ortholog of neuroendocrine protein 7B2 (also known as SGNE1 in mammals), a chaperone and regulatory protein for proprotein convertase 2 (PC2/KPC-2). 7B2 acts as both an activator and inhibitor of PC2, a subtilisin-like serine protease responsible for processing neuroendocrine precursor peptides including neuropeptides and peptide hormones. In C. elegans, proper neuropeptide processing is critical for neuroendocrine signaling that modulates insulin/IGF-1-like signaling (IIS) and other longevity-relevant pathways. By regulating PC2 activity, sbt-1 controls the maturation of neuropeptides that influence DAF-2/insulin receptor signaling and DAF-16/FOXO transcription factor activity. Loss of proper neuropeptide processing can dysregulate intercellular hormonal communication, and 7B2/sbt-1 function is generally required to maintain appropriate peptidergic signaling that supports normal lifespan. The net effect of sbt-1's activator/inhibitor dual role on PC2 is to fine-tune neuropeptide output, which in the context of IIS modulation is predicted to be 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 correctly predicted pro_longevity for sbt-1. The mechanistic reasoning is well-grounded: sbt-1 encodes the C. elegans ortholog of neuroendocrine protein 7B2, which regulates PC2/KPC-2 proprotein convertase activity and neuropeptide processing. The connection to IIS/DAF-2-DAF-16 signaling is plausible and consistent with known C. elegans longevity biology. The model appropriately noted the dual activator/inhibitor role of 7B2 on PC2. Confidence of 0.62 is reasonable given the indirect nature of the mechanistic link. The reasoning is somewhat speculative in connecting sbt-1 specifically to IIS modulation, but the overall framework is sound. Minor deduction for the somewhat circular final reasoning ("fine-tune neuropeptide output... predicted to be pro-longevity" without strong direct evidence cited).
Raw API responses
solver
{
"reasoning": "sbt-1 encodes the C. elegans ortholog of neuroendocrine protein 7B2 (also known as SGNE1 in mammals), a chaperone and regulatory protein for proprotein convertase 2 (PC2/KPC-2). 7B2 acts as both an activator and inhibitor of PC2, a subtilisin-like serine protease responsible for processing neuroendocrine precursor peptides including neuropeptides and peptide hormones. In C. elegans, proper neuropeptide processing is critical for neuroendocrine signaling that modulates insulin/IGF-1-like signaling (IIS) and other longevity-relevant pathways. By regulating PC2 activity, sbt-1 controls the maturation of neuropeptides that influence DAF-2/insulin receptor signaling and DAF-16/FOXO transcription factor activity. Loss of proper neuropeptide processing can dysregulate intercellular hormonal communication, and 7B2/sbt-1 function is generally required to maintain appropriate peptidergic signaling that supports normal lifespan. The net effect of sbt-1's activator/inhibitor dual role on PC2 is to fine-tune neuropeptide output, which in the context of IIS modulation is predicted to be pro-longevity.",
"confidence": 0.62,
"key_pathways": [
"neuroendocrine peptide processing via PC2/KPC-2",
"insulin/IGF-1-like signaling (IIS) / DAF-2–DAF-16 axis",
"neuropeptide-mediated intercellular communication"
],
"mechanism_class": "altered_intercellular_communication",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for sbt-1. The mechanistic reasoning is well-grounded: sbt-1 encodes the C. elegans ortholog of neuroendocrine protein 7B2, which regulates PC2/KPC-2 proprotein convertase activity and neuropeptide processing. The connection to IIS/DAF-2-DAF-16 signaling is plausible and consistent with known C. elegans longevity biology. The model appropriately noted the dual activator/inhibitor role of 7B2 on PC2. Confidence of 0.62 is reasonable given the indirect nature of the mechanistic link. The reasoning is somewhat speculative in connecting sbt-1 specifically to IIS modulation, but the overall framework is sound. Minor deduction for the somewhat circular final reasoning (\"fine-tune neuropeptide output... predicted to be pro-longevity\" without strong direct evidence cited).",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}