Bub3
M. musculus
BUB3 mitotic checkpoint protein
What the model saw
Gene: Bub3 Organism: Mus musculus Known functions: BUB3 mitotic checkpoint protein. mitotic checkpoint protein BUB3. ubiquitin binding.
View unredacted entry
BUB3 mitotic checkpoint protein. mitotic checkpoint protein BUB3. ubiquitin binding.
Solver output
BUB3 is a core component of the mitotic spindle assembly checkpoint (SAC), where it functions as a scaffold protein that recruits BUB1 and MAD2 to unattached kinetochores, thereby halting anaphase onset until all chromosomes are properly bi-oriented. This checkpoint activity prevents chromosome missegregation and aneuploidy, which are major drivers of genomic instability. Loss or attenuation of BUB3 function leads to premature checkpoint silencing, increased rates of chromosomal missegregation, and accelerated accumulation of somatic mutations — all hallmarks of aging-associated genomic instability. Mouse models with reduced Bub3 expression show elevated aneuploidy, early-onset aging phenotypes, and increased cancer incidence, consistent with a pro-longevity role for the wild-type gene. The ubiquitin-binding activity of BUB3 may additionally contribute to proteostatic regulation at the kinetochore during mitotic exit.
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 Bub3 in Mus musculus with high confidence (0.72). The mechanistic reasoning is accurate and well-detailed: BUB3 is indeed a core spindle assembly checkpoint (SAC) component that prevents chromosomal missegregation and aneuploidy. The model correctly notes that reduced Bub3 expression in mice leads to elevated aneuploidy, early-onset aging phenotypes, and increased cancer incidence — consistent with the known literature on BUB3 haploinsufficiency mouse models. The mechanism class (genomic_instability) is appropriate. The mention of ubiquitin-binding activity contributing to proteostatic regulation is a reasonable extrapolation from the known functions listed. Overall, this is a high-quality, accurate prediction with solid mechanistic reasoning.
Raw API responses
solver
{
"reasoning": "BUB3 is a core component of the mitotic spindle assembly checkpoint (SAC), where it functions as a scaffold protein that recruits BUB1 and MAD2 to unattached kinetochores, thereby halting anaphase onset until all chromosomes are properly bi-oriented. This checkpoint activity prevents chromosome missegregation and aneuploidy, which are major drivers of genomic instability. Loss or attenuation of BUB3 function leads to premature checkpoint silencing, increased rates of chromosomal missegregation, and accelerated accumulation of somatic mutations — all hallmarks of aging-associated genomic instability. Mouse models with reduced Bub3 expression show elevated aneuploidy, early-onset aging phenotypes, and increased cancer incidence, consistent with a pro-longevity role for the wild-type gene. The ubiquitin-binding activity of BUB3 may additionally contribute to proteostatic regulation at the kinetochore during mitotic exit.",
"confidence": 0.72,
"key_pathways": [
"spindle assembly checkpoint (SAC)",
"kinetochore-microtubule attachment signaling",
"chromosome segregation fidelity"
],
"mechanism_class": "genomic_instability",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for Bub3 in Mus musculus with high confidence (0.72). The mechanistic reasoning is accurate and well-detailed: BUB3 is indeed a core spindle assembly checkpoint (SAC) component that prevents chromosomal missegregation and aneuploidy. The model correctly notes that reduced Bub3 expression in mice leads to elevated aneuploidy, early-onset aging phenotypes, and increased cancer incidence — consistent with the known literature on BUB3 haploinsufficiency mouse models. The mechanism class (genomic_instability) is appropriate. The mention of ubiquitin-binding activity contributing to proteostatic regulation is a reasonable extrapolation from the known functions listed. Overall, this is a high-quality, accurate prediction with solid mechanistic reasoning.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 5,
"ground_truth_questionable": false
}