Mt2
D. melanogaster
Methyltransferase 2
What the model saw
Gene: Mt2 Organism: Drosophila melanogaster Known functions: Methyltransferase 2. methyltransferase 2. DNA (cytosine-5-)-methyltransferase activity. RNA binding. methyltransferase activity. tRNA (cytidine-N5)-methyltransferase activity. tRNA binding. tRNA methyltransferase activity.
View unredacted entry
Methyltransferase 2. methyltransferase 2. DNA (cytosine-5-)-methyltransferase activity. RNA binding. methyltransferase activity. tRNA (cytidine-N5)-methyltransferase activity. tRNA binding. tRNA methyltransferase activity.
Solver output
Mt2 encodes a methyltransferase with tRNA (cytidine-N5)-methyltransferase activity (m5C modification of tRNA), as well as DNA cytosine-5 methyltransferase activity. tRNA methylation, particularly m5C, is a conserved epitranscriptomic modification that stabilizes tRNA structure, prevents tRNA fragmentation, and maintains translational fidelity and proteostasis. Loss of tRNA methylation leads to ribosome stalling, increased oxidative stress responses, and reduced fitness. In the context of aging hallmarks, proper tRNA modification supports both epigenetic/epitranscriptomic integrity and proteostasis; its normal function would therefore be expected to oppose age-related decline. Additionally, DNA cytosine methylation activity may contribute to epigenome maintenance, further supporting a pro-longevity role.
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 Mt2 in Drosophila melanogaster. The mechanistic reasoning is sound and well-grounded: tRNA m5C methylation by Mt2 supports translational fidelity, proteostasis, and tRNA stability, all of which are relevant to aging biology. The model also appropriately noted the DNA cytosine methylation activity as a secondary potential mechanism. The reasoning is biologically plausible and consistent with known roles of tRNA modification enzymes in aging. Confidence of 0.65 is appropriately calibrated given the limited direct experimental evidence typically available for such genes. Overall a high-quality prediction with solid mechanistic reasoning.
Raw API responses
solver
{
"reasoning": "Mt2 encodes a methyltransferase with tRNA (cytidine-N5)-methyltransferase activity (m5C modification of tRNA), as well as DNA cytosine-5 methyltransferase activity. tRNA methylation, particularly m5C, is a conserved epitranscriptomic modification that stabilizes tRNA structure, prevents tRNA fragmentation, and maintains translational fidelity and proteostasis. Loss of tRNA methylation leads to ribosome stalling, increased oxidative stress responses, and reduced fitness. In the context of aging hallmarks, proper tRNA modification supports both epigenetic/epitranscriptomic integrity and proteostasis; its normal function would therefore be expected to oppose age-related decline. Additionally, DNA cytosine methylation activity may contribute to epigenome maintenance, further supporting a pro-longevity role.",
"confidence": 0.65,
"key_pathways": [
"tRNA m5C epitranscriptomic modification",
"translational fidelity and proteostasis",
"DNA cytosine methylation / epigenome maintenance"
],
"mechanism_class": "epigenetic_alterations",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for Mt2 in Drosophila melanogaster. The mechanistic reasoning is sound and well-grounded: tRNA m5C methylation by Mt2 supports translational fidelity, proteostasis, and tRNA stability, all of which are relevant to aging biology. The model also appropriately noted the DNA cytosine methylation activity as a secondary potential mechanism. The reasoning is biologically plausible and consistent with known roles of tRNA modification enzymes in aging. Confidence of 0.65 is appropriately calibrated given the limited direct experimental evidence typically available for such genes. Overall a high-quality prediction with solid mechanistic reasoning.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}