HMT1
S. cerevisiae
protein-arginine omega-N methyltransferase HMT1
What the model saw
Gene: HMT1 Organism: Saccharomyces cerevisiae Known functions: protein-arginine omega-N methyltransferase HMT1. histone methyltransferase activity. identical protein binding. protein binding. protein-arginine N-methyltransferase activity. protein-arginine omega-N asymmetric methyltransferase activity. protein-arginine omega-N monomethyltransferase activity.
View unredacted entry
protein-arginine omega-N methyltransferase HMT1. histone methyltransferase activity. identical protein binding. protein binding. protein-arginine N-methyltransferase activity. protein-arginine omega-N asymmetric methyltransferase activity. protein-arginine omega-N monomethyltransferase activity.
Solver output
HMT1 encodes the primary type I protein arginine methyltransferase (PRMT) in S. cerevisiae, catalyzing asymmetric omega-N monomethylation and dimethylation of arginine residues on histones (particularly H4R3) and RNA-binding proteins. Arginine methylation of histones by HMT1 contributes to transcriptional regulation and chromatin organization, which are key epigenetic mechanisms linked to longevity. HMT1-mediated methylation of RNA-binding proteins (e.g., Npl3, Hrp1) also facilitates mRNA processing and nuclear export, supporting proteostasis and genome integrity. Loss of PRMT activity in yeast and other organisms is associated with shortened lifespan, while proper arginine methylation helps maintain transcriptional fidelity and stress responses that promote longevity. The conservation of PRMT function across eukaryotes and its role in regulating both chromatin state and RNA metabolism place HMT1 firmly in the pro-longevity category via epigenetic maintenance.
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 claims that "loss of PRMT activity in yeast is associated with shortened lifespan," which would make HMT1 pro-longevity, but the GenAge database classifies it as anti_longevity, meaning HMT1 activity actually shortens lifespan (or its deletion extends lifespan). The model constructed a coherent but wrong narrative about HMT1's role in longevity. The confidence of 0.65 is moderate but the reasoning confidently points in the wrong direction. The mechanistic reasoning about HMT1's biochemical functions (arginine methylation of histones and RNA-binding proteins) is partially accurate, but the conclusion about its effect on longevity is wrong.
Raw API responses
solver
{
"reasoning": "HMT1 encodes the primary type I protein arginine methyltransferase (PRMT) in S. cerevisiae, catalyzing asymmetric omega-N monomethylation and dimethylation of arginine residues on histones (particularly H4R3) and RNA-binding proteins. Arginine methylation of histones by HMT1 contributes to transcriptional regulation and chromatin organization, which are key epigenetic mechanisms linked to longevity. HMT1-mediated methylation of RNA-binding proteins (e.g., Npl3, Hrp1) also facilitates mRNA processing and nuclear export, supporting proteostasis and genome integrity. Loss of PRMT activity in yeast and other organisms is associated with shortened lifespan, while proper arginine methylation helps maintain transcriptional fidelity and stress responses that promote longevity. The conservation of PRMT function across eukaryotes and its role in regulating both chromatin state and RNA metabolism place HMT1 firmly in the pro-longevity category via epigenetic maintenance.",
"confidence": 0.65,
"key_pathways": [
"histone H4R3 arginine methylation and chromatin regulation",
"RNA-binding protein methylation and mRNA processing/nuclear export",
"epigenetic transcriptional regulation via PRMT activity"
],
"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 claims that \"loss of PRMT activity in yeast is associated with shortened lifespan,\" which would make HMT1 pro-longevity, but the GenAge database classifies it as anti_longevity, meaning HMT1 activity actually shortens lifespan (or its deletion extends lifespan). The model constructed a coherent but wrong narrative about HMT1's role in longevity. The confidence of 0.65 is moderate but the reasoning confidently points in the wrong direction. The mechanistic reasoning about HMT1's biochemical functions (arginine methylation of histones and RNA-binding proteins) is partially accurate, but the conclusion about its effect on longevity is wrong.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}