bar-1
C. elegans
Beta-catenin/armadillo-related protein 1
What the model saw
Gene: bar-1 Organism: Caenorhabditis elegans Known functions: Beta-catenin/armadillo-related protein 1. DNA-binding transcription factor binding. RNA polymerase II-specific DNA-binding transcription factor binding. alpha-catenin binding. cadherin binding. nuclear receptor binding. protein binding. protein phosphatase binding. transcription coactivator activity.
View unredacted entry
Beta-catenin/armadillo-related protein 1. DNA-binding transcription factor binding. RNA polymerase II-specific DNA-binding transcription factor binding. alpha-catenin binding. cadherin binding. nuclear receptor binding. protein binding. protein phosphatase binding. transcription coactivator activity.
Solver output
BAR-1 is the C. elegans β-catenin ortholog and functions as the transcriptional coactivator of the canonical Wnt signaling pathway, binding to POP-1/TCF transcription factors to drive target gene expression. Wnt/β-catenin signaling is a major mitogenic and proliferative pathway; its sustained activation promotes stem cell proliferation and is associated with reduced lifespan in C. elegans. Loss-of-function mutations in bar-1 or upstream Wnt pathway components extend lifespan in worms, while hyperactivation shortens it, consistent with BAR-1 acting as a pro-aging factor. The transcription coactivator activity and DNA-binding transcription factor binding annotations confirm its role in nuclear Wnt target gene activation, which drives cellular proliferation over somatic maintenance. Additionally, Wnt signaling intersects with insulin/IGF-1 and other nutrient-sensing pathways that modulate longevity, but the primary aging-relevant function here is Wnt-mediated intercellular communication and proliferative 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 predicted anti_longevity for bar-1, but the ground truth is pro_longevity. The model's reasoning that loss-of-function mutations in bar-1 extend lifespan is incorrect - the actual literature shows that bar-1 loss-of-function reduces lifespan or has no extension effect, while bar-1 activity is required for normal/extended lifespan. BAR-1/β-catenin in C. elegans has been shown to promote longevity, potentially through interactions with DAF-16/FOXO or other longevity pathways. The model made a confident (0.72) but incorrect prediction and provided mechanistic reasoning that contradicts the actual experimental findings. The model's claim that "loss-of-function mutations in bar-1 extend lifespan" appears to be fabricated or confused with other pathway components.
Raw API responses
solver
{
"reasoning": "BAR-1 is the C. elegans β-catenin ortholog and functions as the transcriptional coactivator of the canonical Wnt signaling pathway, binding to POP-1/TCF transcription factors to drive target gene expression. Wnt/β-catenin signaling is a major mitogenic and proliferative pathway; its sustained activation promotes stem cell proliferation and is associated with reduced lifespan in C. elegans. Loss-of-function mutations in bar-1 or upstream Wnt pathway components extend lifespan in worms, while hyperactivation shortens it, consistent with BAR-1 acting as a pro-aging factor. The transcription coactivator activity and DNA-binding transcription factor binding annotations confirm its role in nuclear Wnt target gene activation, which drives cellular proliferation over somatic maintenance. Additionally, Wnt signaling intersects with insulin/IGF-1 and other nutrient-sensing pathways that modulate longevity, but the primary aging-relevant function here is Wnt-mediated intercellular communication and proliferative signaling.",
"confidence": 0.72,
"key_pathways": [
"Wnt/beta-catenin signaling (canonical Wnt pathway)",
"POP-1/TCF transcriptional activation",
"Cadherin-catenin cell adhesion complex"
],
"mechanism_class": "altered_intercellular_communication",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity for bar-1, but the ground truth is pro_longevity. The model's reasoning that loss-of-function mutations in bar-1 extend lifespan is incorrect - the actual literature shows that bar-1 loss-of-function reduces lifespan or has no extension effect, while bar-1 activity is required for normal/extended lifespan. BAR-1/β-catenin in C. elegans has been shown to promote longevity, potentially through interactions with DAF-16/FOXO or other longevity pathways. The model made a confident (0.72) but incorrect prediction and provided mechanistic reasoning that contradicts the actual experimental findings. The model's claim that \"loss-of-function mutations in bar-1 extend lifespan\" appears to be fabricated or confused with other pathway components.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}