daf-5
C. elegans
Ski protein homolog
What the model saw
Gene: daf-5 Organism: Caenorhabditis elegans Known functions: Ski protein homolog. DNA-binding transcription factor activity, RNA polymerase II-specific. RNA polymerase II cis-regulatory region sequence-specific DNA binding. SMAD binding. protein binding.
View unredacted entry
Ski protein homolog. DNA-binding transcription factor activity, RNA polymerase II-specific. RNA polymerase II cis-regulatory region sequence-specific DNA binding. SMAD binding. protein binding.
Solver output
DAF-5 is a Ski/Sno family transcriptional co-repressor that binds SMAD proteins and acts as a negative regulator within the DAF-7/TGF-β signaling pathway in C. elegans. It functions as a transcriptional repressor that partners with DAF-3 (a SMAD) to suppress DAF-16/FOXO target genes and dauer formation. The DAF-7 TGF-β pathway intersects with the insulin/IGF-1 signaling (IIS) pathway, and DAF-5 activity opposes the pro-longevity transcriptional program driven by DAF-16. Loss of daf-5 function promotes dauer entry and extends lifespan by relieving repression of DAF-16 target genes, placing DAF-5 in an anti-longevity role. Its SMAD-binding and RNA Pol II-specific transcription factor activities are consistent with it acting as a co-repressor that dampens the longevity-promoting arm of nutrient/growth factor sensing.
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 identifies DAF-5 as a Ski/Sno family transcriptional co-repressor that partners with DAF-3 (SMAD) in the DAF-7/TGF-β pathway, and correctly notes that loss of daf-5 promotes dauer entry. However, the model draws the wrong conclusion about longevity influence. The ground truth classifies daf-5 as pro_longevity, while the model predicts anti_longevity with 0.82 confidence. The mechanistic reasoning is largely correct (DAF-5 represses DAF-16 target genes, loss of daf-5 promotes dauer), but the model conflates dauer promotion with lifespan extension incorrectly, or misidentifies the direction of the longevity effect. In the TGF-β pathway context, daf-5 loss-of-function promotes dauer but the relationship to adult lifespan extension is more nuanced. The GenAge classification of daf-5 as pro_longevity suggests that daf-5 activity (not its loss) promotes longevity, which contradicts the model's conclusion. The model's reasoning quality is good in terms of pathway knowledge but reaches the wrong final answer.
Raw API responses
solver
{
"reasoning": "DAF-5 is a Ski/Sno family transcriptional co-repressor that binds SMAD proteins and acts as a negative regulator within the DAF-7/TGF-β signaling pathway in C. elegans. It functions as a transcriptional repressor that partners with DAF-3 (a SMAD) to suppress DAF-16/FOXO target genes and dauer formation. The DAF-7 TGF-β pathway intersects with the insulin/IGF-1 signaling (IIS) pathway, and DAF-5 activity opposes the pro-longevity transcriptional program driven by DAF-16. Loss of daf-5 function promotes dauer entry and extends lifespan by relieving repression of DAF-16 target genes, placing DAF-5 in an anti-longevity role. Its SMAD-binding and RNA Pol II-specific transcription factor activities are consistent with it acting as a co-repressor that dampens the longevity-promoting arm of nutrient/growth factor sensing.",
"confidence": 0.82,
"key_pathways": [
"DAF-7/TGF-β signaling",
"DAF-16/FOXO transcriptional regulation",
"Insulin/IGF-1 signaling (IIS) pathway"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model correctly identifies DAF-5 as a Ski/Sno family transcriptional co-repressor that partners with DAF-3 (SMAD) in the DAF-7/TGF-β pathway, and correctly notes that loss of daf-5 promotes dauer entry. However, the model draws the wrong conclusion about longevity influence. The ground truth classifies daf-5 as pro_longevity, while the model predicts anti_longevity with 0.82 confidence. The mechanistic reasoning is largely correct (DAF-5 represses DAF-16 target genes, loss of daf-5 promotes dauer), but the model conflates dauer promotion with lifespan extension incorrectly, or misidentifies the direction of the longevity effect. In the TGF-β pathway context, daf-5 loss-of-function promotes dauer but the relationship to adult lifespan extension is more nuanced. The GenAge classification of daf-5 as pro_longevity suggests that daf-5 activity (not its loss) promotes longevity, which contradicts the model's conclusion. The model's reasoning quality is good in terms of pathway knowledge but reaches the wrong final answer.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": true
}