Smox
D. melanogaster
Smad on X
What the model saw
Gene: Smox Organism: Drosophila melanogaster Known functions: Smad on X. smad on X. DNA-binding transcription factor activity, RNA polymerase II-specific. I-SMAD binding. RNA polymerase II cis-regulatory region sequence-specific DNA binding. chromatin DNA binding. co-SMAD binding. protein binding.
View unredacted entry
Smad on X. smad on X. DNA-binding transcription factor activity, RNA polymerase II-specific. I-SMAD binding. RNA polymerase II cis-regulatory region sequence-specific DNA binding. chromatin DNA binding. co-SMAD binding. protein binding.
Solver output
Smox (Smad on X) is the Drosophila R-SMAD transcriptional effector of the TGF-β/Activin signaling branch. It binds co-SMADs (Medea) and acts as an RNA Pol II-specific transcription factor at cis-regulatory elements to drive Activin-responsive gene expression. In Drosophila, the Activin/dSmad2 (Smox) pathway integrates systemic growth and metabolic signals, and its activity in neurons and peripheral tissues modulates insulin-like peptide (dILP) secretion and nutrient sensing. Reduced Activin signaling through Smox has been linked to extended lifespan via improved insulin/IGF-1 pathway regulation, suggesting that normal Smox activity promotes growth and anabolic signaling that can limit longevity. However, Smox also mediates tissue homeostasis and stress responses; its I-SMAD binding activity allows negative feedback regulation. On balance, the canonical role of Smox as a positive transcriptional effector of Activin/TGF-β—a pathway that promotes growth at the expense of longevity—places it as a modest anti-longevity factor, though context-dependency introduces uncertainty.
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 identified the mechanistic role of Smox as a TGF-β/Activin pathway effector and even correctly reasoned that "Reduced Activin signaling through Smox has been linked to extended lifespan" and that "normal Smox activity promotes growth and anabolic signaling that can limit longevity" — which would make it anti-longevity. However, the model then contradicted itself by predicting "pro_longevity" in the final answer field, despite the reasoning pointing toward anti_longevity. The ground truth is anti_longevity. The model's mechanism understanding was largely correct, but the final classification was wrong. The reasoning quality is moderate — it identified the right pathway and even the right direction of effect, but then failed to translate that into the correct final prediction.
Raw API responses
solver
{
"reasoning": "Smox (Smad on X) is the Drosophila R-SMAD transcriptional effector of the TGF-β/Activin signaling branch. It binds co-SMADs (Medea) and acts as an RNA Pol II-specific transcription factor at cis-regulatory elements to drive Activin-responsive gene expression. In Drosophila, the Activin/dSmad2 (Smox) pathway integrates systemic growth and metabolic signals, and its activity in neurons and peripheral tissues modulates insulin-like peptide (dILP) secretion and nutrient sensing. Reduced Activin signaling through Smox has been linked to extended lifespan via improved insulin/IGF-1 pathway regulation, suggesting that normal Smox activity promotes growth and anabolic signaling that can limit longevity. However, Smox also mediates tissue homeostasis and stress responses; its I-SMAD binding activity allows negative feedback regulation. On balance, the canonical role of Smox as a positive transcriptional effector of Activin/TGF-β—a pathway that promotes growth at the expense of longevity—places it as a modest anti-longevity factor, though context-dependency introduces uncertainty.",
"confidence": 0.62,
"key_pathways": [
"TGF-β/Activin-SMAD signaling",
"Insulin/IGF-1-like signaling (IIS) modulation",
"RNA Pol II transcriptional regulation of growth genes"
],
"mechanism_class": "altered_intercellular_communication",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly identified the mechanistic role of Smox as a TGF-β/Activin pathway effector and even correctly reasoned that \"Reduced Activin signaling through Smox has been linked to extended lifespan\" and that \"normal Smox activity promotes growth and anabolic signaling that can limit longevity\" — which would make it anti-longevity. However, the model then contradicted itself by predicting \"pro_longevity\" in the final answer field, despite the reasoning pointing toward anti_longevity. The ground truth is anti_longevity. The model's mechanism understanding was largely correct, but the final classification was wrong. The reasoning quality is moderate — it identified the right pathway and even the right direction of effect, but then failed to translate that into the correct final prediction.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 3,
"ground_truth_questionable": false
}