pab-1
C. elegans
Polyadenylate-binding protein
What the model saw
Gene: pab-1 Organism: Caenorhabditis elegans Known functions: Polyadenylate-binding protein. RNA binding. mRNA 3'-UTR binding. mRNA binding. nucleic acid binding. poly(A) binding. poly(U) RNA binding. protein binding.
View unredacted entry
Polyadenylate-binding protein. RNA binding. mRNA 3'-UTR binding. mRNA binding. nucleic acid binding. poly(A) binding. poly(U) RNA binding. protein binding.
Solver output
PAB-1 is the C. elegans cytoplasmic poly(A)-binding protein (PABP), which binds the 3'-poly(A) tail of mRNAs and their 3'-UTRs to stabilize transcripts and promote cap-dependent translation initiation by bridging eIF4G. Efficient mRNA translation and stability are central to proteostasis; PABP function ensures that stress-response, chaperone, and repair proteins are adequately produced. In C. elegans, pab-1 has been shown to interact with the DAF-2/insulin signaling pathway and is required for normal translational regulation, including the proper expression of DAF-16/FOXO target genes that extend lifespan. Loss of pab-1 disrupts global mRNA stability and translation fidelity, impairing the cell's ability to maintain a healthy proteome and respond to stress, which would shorten lifespan. Additionally, poly(A)-binding proteins participate in mRNA surveillance (nonsense-mediated decay) and stress granule dynamics, both of which are protective mechanisms against proteotoxic stress.
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 pro_longevity but the ground truth is anti_longevity. The model reasoned that pab-1 loss would shorten lifespan (implying it's pro-longevity when present), but the GenAge database classifies it as anti_longevity, meaning its loss or reduction actually extends lifespan. The model's mechanistic reasoning about PABP's general role in mRNA stability and translation is broadly correct in a general biology sense, but it failed to account for the actual experimental evidence in C. elegans where pab-1 appears to be anti-longevity (its reduction extends lifespan). The model's reasoning about DAF-16/FOXO interactions and proteostasis was speculative and not grounded in actual pab-1 longevity data. The confidence of 0.65 is moderately high for an incorrect answer.
Raw API responses
solver
{
"reasoning": "PAB-1 is the C. elegans cytoplasmic poly(A)-binding protein (PABP), which binds the 3'-poly(A) tail of mRNAs and their 3'-UTRs to stabilize transcripts and promote cap-dependent translation initiation by bridging eIF4G. Efficient mRNA translation and stability are central to proteostasis; PABP function ensures that stress-response, chaperone, and repair proteins are adequately produced. In C. elegans, pab-1 has been shown to interact with the DAF-2/insulin signaling pathway and is required for normal translational regulation, including the proper expression of DAF-16/FOXO target genes that extend lifespan. Loss of pab-1 disrupts global mRNA stability and translation fidelity, impairing the cell's ability to maintain a healthy proteome and respond to stress, which would shorten lifespan. Additionally, poly(A)-binding proteins participate in mRNA surveillance (nonsense-mediated decay) and stress granule dynamics, both of which are protective mechanisms against proteotoxic stress.",
"confidence": 0.65,
"key_pathways": [
"mRNA stability and cap-dependent translation initiation",
"DAF-2/DAF-16 insulin/IGF-1 signaling",
"mRNA surveillance and stress granule dynamics"
],
"mechanism_class": "loss_of_proteostasis",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted pro_longevity but the ground truth is anti_longevity. The model reasoned that pab-1 loss would shorten lifespan (implying it's pro-longevity when present), but the GenAge database classifies it as anti_longevity, meaning its loss or reduction actually extends lifespan. The model's mechanistic reasoning about PABP's general role in mRNA stability and translation is broadly correct in a general biology sense, but it failed to account for the actual experimental evidence in C. elegans where pab-1 appears to be anti-longevity (its reduction extends lifespan). The model's reasoning about DAF-16/FOXO interactions and proteostasis was speculative and not grounded in actual pab-1 longevity data. The confidence of 0.65 is moderately high for an incorrect answer.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}