oga1
S. pombe
protein stm1
What the model saw
Gene: oga1 Organism: Schizosaccharomyces pombe Known functions: protein stm1. G-quadruplex DNA binding. RNA binding. nucleic acid binding.
View unredacted entry
protein stm1. G-quadruplex DNA binding. RNA binding. nucleic acid binding.
Solver output
The oga1/stm1 protein binds G-quadruplex (G4) DNA structures, which form at telomeres and other guanine-rich genomic regions. G4-binding proteins typically help resolve or stabilize these non-canonical DNA structures, protecting against replication fork stalling, DNA damage, and genomic instability. In S. cerevisiae, the Stm1 ortholog has been linked to ribosome preservation and stress responses, but the G4 DNA binding function in S. pombe most directly implicates a role in maintaining genomic integrity at telomeres and other G-rich loci. By preventing G4-induced replication stress and DNA breaks, oga1/stm1 would be expected to suppress genomic instability, a primary hallmark of aging. The RNA binding activity may additionally contribute to translational regulation under stress, further supporting cellular homeostasis.
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 oga1/stm1 in S. pombe, but the mechanistic reasoning is speculative and not well-supported. The model focuses heavily on G-quadruplex DNA binding and genomic instability, but the primary known function of Stm1 orthologs is in ribosome preservation/hibernation and stress responses (particularly during nutrient deprivation), not G4 DNA resolution. The model briefly mentions the S. cerevisiae Stm1 ortholog's role in ribosome preservation but then dismisses it in favor of the G4 DNA binding angle. The actual pro-longevity mechanism is more likely related to ribosome quality control and stress response rather than genomic instability prevention. The confidence of 0.52 is appropriately modest given the uncertainty. The reasoning quality is poor because it builds a speculative mechanistic story around a secondary function while downplaying the more established primary function.
Raw API responses
solver
{
"reasoning": "The oga1/stm1 protein binds G-quadruplex (G4) DNA structures, which form at telomeres and other guanine-rich genomic regions. G4-binding proteins typically help resolve or stabilize these non-canonical DNA structures, protecting against replication fork stalling, DNA damage, and genomic instability. In S. cerevisiae, the Stm1 ortholog has been linked to ribosome preservation and stress responses, but the G4 DNA binding function in S. pombe most directly implicates a role in maintaining genomic integrity at telomeres and other G-rich loci. By preventing G4-induced replication stress and DNA breaks, oga1/stm1 would be expected to suppress genomic instability, a primary hallmark of aging. The RNA binding activity may additionally contribute to translational regulation under stress, further supporting cellular homeostasis.",
"confidence": 0.52,
"key_pathways": [
"G-quadruplex DNA resolution and genomic stability",
"telomere maintenance",
"stress-responsive RNA binding and translational regulation"
],
"mechanism_class": "genomic_instability",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for oga1/stm1 in S. pombe, but the mechanistic reasoning is speculative and not well-supported. The model focuses heavily on G-quadruplex DNA binding and genomic instability, but the primary known function of Stm1 orthologs is in ribosome preservation/hibernation and stress responses (particularly during nutrient deprivation), not G4 DNA resolution. The model briefly mentions the S. cerevisiae Stm1 ortholog's role in ribosome preservation but then dismisses it in favor of the G4 DNA binding angle. The actual pro-longevity mechanism is more likely related to ribosome quality control and stress response rather than genomic instability prevention. The confidence of 0.52 is appropriately modest given the uncertainty. The reasoning quality is poor because it builds a speculative mechanistic story around a secondary function while downplaying the more established primary function.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}