dot-1.1
C. elegans
Histone-lysine N-methyltransferase, H3 lysine-79 specific
What the model saw
Gene: dot-1.1 Organism: Caenorhabditis elegans Known functions: Histone-lysine N-methyltransferase, H3 lysine-79 specific. histone H3K79 methyltransferase activity. histone H3K79 trimethyltransferase activity. protein binding.
View unredacted entry
Histone-lysine N-methyltransferase, H3 lysine-79 specific. histone H3K79 methyltransferase activity. histone H3K79 trimethyltransferase activity. protein binding.
Solver output
dot-1.1 encodes the C. elegans ortholog of DOT1L, a histone H3K79 methyltransferase that deposits mono-, di-, and trimethyl marks on histone H3 lysine 79. H3K79 methylation is a transcriptionally activating mark associated with active gene bodies and is critical for maintaining proper chromatin states during aging. In C. elegans, H3K79 methylation has been linked to the regulation of stress response and longevity pathways, including DAF-16/FOXO target gene activation. Loss of H3K79 methylation leads to dysregulation of chromatin architecture and aberrant gene silencing, which is a hallmark of epigenetic drift during aging. The maintenance of H3K79me marks by dot-1.1 is therefore expected to support transcriptional fidelity and genome integrity, promoting longevity rather than opposing it.
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's reasoning is plausible-sounding but ultimately incorrect - it assumed that H3K79 methylation by dot-1.1 supports longevity by maintaining transcriptional fidelity and DAF-16/FOXO activation. In reality, dot-1.1 is anti-longevity in C. elegans, meaning its loss (or reduction) extends lifespan. The model's mechanistic reasoning about H3K79me being a transcriptionally activating mark is generally correct biochemically, but the conclusion drawn about its effect on longevity in C. elegans is wrong. The model also invoked DAF-16/FOXO pathway connections without strong evidence, which appears to be speculative reasoning that led to the wrong conclusion. The confidence of 0.65 is moderately high for an incorrect prediction.
Raw API responses
solver
{
"reasoning": "dot-1.1 encodes the C. elegans ortholog of DOT1L, a histone H3K79 methyltransferase that deposits mono-, di-, and trimethyl marks on histone H3 lysine 79. H3K79 methylation is a transcriptionally activating mark associated with active gene bodies and is critical for maintaining proper chromatin states during aging. In C. elegans, H3K79 methylation has been linked to the regulation of stress response and longevity pathways, including DAF-16/FOXO target gene activation. Loss of H3K79 methylation leads to dysregulation of chromatin architecture and aberrant gene silencing, which is a hallmark of epigenetic drift during aging. The maintenance of H3K79me marks by dot-1.1 is therefore expected to support transcriptional fidelity and genome integrity, promoting longevity rather than opposing it.",
"confidence": 0.65,
"key_pathways": [
"H3K79 methylation / chromatin regulation",
"DAF-16/FOXO transcriptional activation",
"epigenetic maintenance of gene expression fidelity"
],
"mechanism_class": "epigenetic_alterations",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted pro_longevity but the ground truth is anti_longevity. The model's reasoning is plausible-sounding but ultimately incorrect - it assumed that H3K79 methylation by dot-1.1 supports longevity by maintaining transcriptional fidelity and DAF-16/FOXO activation. In reality, dot-1.1 is anti-longevity in C. elegans, meaning its loss (or reduction) extends lifespan. The model's mechanistic reasoning about H3K79me being a transcriptionally activating mark is generally correct biochemically, but the conclusion drawn about its effect on longevity in C. elegans is wrong. The model also invoked DAF-16/FOXO pathway connections without strong evidence, which appears to be speculative reasoning that led to the wrong conclusion. The confidence of 0.65 is moderately high for an incorrect prediction.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}