Terf2
M. musculus
telomeric repeat binding factor 2
What the model saw
Gene: Terf2 Organism: Mus musculus Known functions: telomeric repeat binding factor 2. telomeric repeat-binding factor 2. G-rich strand telomeric DNA binding. double-stranded telomeric DNA binding. enzyme binding. protein binding. protein homodimerization activity. protein-containing complex binding. telomerase activity. telomeric repeat DNA binding.
View unredacted entry
telomeric repeat binding factor 2. telomeric repeat-binding factor 2. G-rich strand telomeric DNA binding. double-stranded telomeric DNA binding. enzyme binding. protein binding. protein homodimerization activity. protein-containing complex binding. telomerase activity. telomeric repeat DNA binding.
Solver output
TERF2 (TRF2) is a core component of the shelterin complex that directly binds double-stranded telomeric DNA and G-rich single-stranded overhangs, protecting chromosome ends from being recognized as DNA double-strand breaks. By capping telomeres and suppressing ATM-dependent DNA damage responses, TRF2 prevents end-to-end chromosomal fusions and premature cellular senescence. Its interaction with telomerase activity annotations suggests it also facilitates telomere length maintenance. Loss of TRF2 function leads to rapid telomere uncapping, activation of p53/p21 senescence pathways, and accelerated aging phenotypes, while its normal function preserves telomere integrity and extends replicative lifespan. Therefore, the normal function of Terf2 opposes telomere attrition and promotes longevity.
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" with high confidence (0.82), but the ground truth is "anti_longevity." The model's reasoning about TRF2's role in telomere protection is mechanistically sound in general terms — TRF2 does protect telomeres and prevent DNA damage responses. However, the GenAge classification of Terf2 as "anti_longevity" in mice likely reflects experimental evidence that overexpression of TRF2 in mice leads to accelerated aging phenotypes (e.g., skin aging, increased cancer susceptibility), which is the opposite of what the model predicted. The model focused only on the loss-of-function scenario and ignored the overexpression data that drives the anti_longevity classification. The reasoning quality is moderate — the model correctly identified the biological role of TRF2 but failed to account for the context-dependent (gain-of-function vs. loss-of-function) effects that determine the GenAge classification. The model was confidently wrong.
Raw API responses
solver
{
"reasoning": "TERF2 (TRF2) is a core component of the shelterin complex that directly binds double-stranded telomeric DNA and G-rich single-stranded overhangs, protecting chromosome ends from being recognized as DNA double-strand breaks. By capping telomeres and suppressing ATM-dependent DNA damage responses, TRF2 prevents end-to-end chromosomal fusions and premature cellular senescence. Its interaction with telomerase activity annotations suggests it also facilitates telomere length maintenance. Loss of TRF2 function leads to rapid telomere uncapping, activation of p53/p21 senescence pathways, and accelerated aging phenotypes, while its normal function preserves telomere integrity and extends replicative lifespan. Therefore, the normal function of Terf2 opposes telomere attrition and promotes longevity.",
"confidence": 0.82,
"key_pathways": [
"Shelterin complex / telomere capping",
"ATM DNA damage response suppression",
"Telomerase-mediated telomere length maintenance"
],
"mechanism_class": "telomere_attrition",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model predicted \"pro_longevity\" with high confidence (0.82), but the ground truth is \"anti_longevity.\" The model's reasoning about TRF2's role in telomere protection is mechanistically sound in general terms — TRF2 does protect telomeres and prevent DNA damage responses. However, the GenAge classification of Terf2 as \"anti_longevity\" in mice likely reflects experimental evidence that overexpression of TRF2 in mice leads to accelerated aging phenotypes (e.g., skin aging, increased cancer susceptibility), which is the opposite of what the model predicted. The model focused only on the loss-of-function scenario and ignored the overexpression data that drives the anti_longevity classification. The reasoning quality is moderate — the model correctly identified the biological role of TRF2 but failed to account for the context-dependent (gain-of-function vs. loss-of-function) effects that determine the GenAge classification. The model was confidently wrong.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 3,
"ground_truth_questionable": false
}