top-1
C. elegans
DNA topoisomerase 1
What the model saw
Gene: top-1 Organism: Caenorhabditis elegans Known functions: DNA topoisomerase 1. DNA binding. DNA topoisomerase type I (single strand cut, ATP-independent) activity.
View unredacted entry
DNA topoisomerase 1. DNA binding. DNA topoisomerase type I (single strand cut, ATP-independent) activity.
Solver output
DNA Topoisomerase I (top-1) resolves torsional stress and supercoiling in DNA by introducing transient single-strand breaks, thereby facilitating replication fork progression and transcription elongation. Without proper topoisomerase I activity, stalled replication forks and transcription-replication conflicts accumulate, leading to DNA strand breaks, R-loop formation, and genomic instability—a primary hallmark of aging. In C. elegans, maintenance of genomic integrity is tightly linked to lifespan, as DNA damage accumulation drives cellular dysfunction and accelerates aging. Additionally, top-1 supports efficient transcription of long genes, which is particularly important for neuronal and somatic maintenance in aging organisms. Loss of top-1 function would therefore be expected to shorten lifespan by increasing genomic instability, placing its normal function in the pro-longevity category.
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 top-1 in C. elegans. The mechanistic reasoning is sound and well-articulated: DNA Topoisomerase I resolves torsional stress, prevents replication-transcription conflicts, suppresses R-loop formation, and maintains genomic integrity — all of which are legitimate mechanisms linking top-1 function to longevity. The reasoning logically concludes that loss of top-1 would increase genomic instability and shorten lifespan, placing it in the pro-longevity category. The confidence of 0.62 is appropriately moderate given the indirect nature of the inference. Minor deduction: the reasoning is somewhat generic (applicable to many DNA repair/maintenance genes) and doesn't cite specific C. elegans experimental evidence for top-1's role in lifespan, but the logic is coherent and the conclusion is correct.
Raw API responses
solver
{
"reasoning": "DNA Topoisomerase I (top-1) resolves torsional stress and supercoiling in DNA by introducing transient single-strand breaks, thereby facilitating replication fork progression and transcription elongation. Without proper topoisomerase I activity, stalled replication forks and transcription-replication conflicts accumulate, leading to DNA strand breaks, R-loop formation, and genomic instability—a primary hallmark of aging. In C. elegans, maintenance of genomic integrity is tightly linked to lifespan, as DNA damage accumulation drives cellular dysfunction and accelerates aging. Additionally, top-1 supports efficient transcription of long genes, which is particularly important for neuronal and somatic maintenance in aging organisms. Loss of top-1 function would therefore be expected to shorten lifespan by increasing genomic instability, placing its normal function in the pro-longevity category.",
"confidence": 0.62,
"key_pathways": [
"DNA supercoiling resolution and replication fork stability",
"Transcription-replication conflict prevention via R-loop suppression",
"Genomic integrity maintenance"
],
"mechanism_class": "genomic_instability",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for top-1 in C. elegans. The mechanistic reasoning is sound and well-articulated: DNA Topoisomerase I resolves torsional stress, prevents replication-transcription conflicts, suppresses R-loop formation, and maintains genomic integrity — all of which are legitimate mechanisms linking top-1 function to longevity. The reasoning logically concludes that loss of top-1 would increase genomic instability and shorten lifespan, placing it in the pro-longevity category. The confidence of 0.62 is appropriately moderate given the indirect nature of the inference. Minor deduction: the reasoning is somewhat generic (applicable to many DNA repair/maintenance genes) and doesn't cite specific C. elegans experimental evidence for top-1's role in lifespan, but the logic is coherent and the conclusion is correct.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}