sptf-3
C. elegans
Specificity protein transcription factor 3
What the model saw
Gene: sptf-3 Organism: Caenorhabditis elegans Known functions: Specificity protein transcription factor 3. DNA-binding transcription factor activity, RNA polymerase II-specific. RNA polymerase II cis-regulatory region sequence-specific DNA binding. chromatin binding.
View unredacted entry
Specificity protein transcription factor 3. DNA-binding transcription factor activity, RNA polymerase II-specific. RNA polymerase II cis-regulatory region sequence-specific DNA binding. chromatin binding.
Solver output
sptf-3 encodes a Specificity Protein (Sp) family transcription factor that binds GC-rich cis-regulatory elements and recruits RNA Pol II to target gene promoters. In C. elegans, Sp/KLF-family transcription factors are known regulators of stress response, metabolism, and longevity pathways; the closest mammalian orthologs (Sp1/Sp3) regulate genes involved in autophagy, mitochondrial biogenesis, and insulin/IGF-1 signaling. Its chromatin-binding activity suggests it modulates the epigenetic landscape at target loci, consistent with the epigenetic alterations hallmark. Sp-family factors in worms have been linked to DAF-16/FOXO target gene regulation and lifespan extension under reduced IIS. Loss of such a broadly acting transcriptional activator would likely impair expression of pro-longevity stress-response genes, making the wild-type function net pro-longevity, though the evidence is indirect.
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, but the reasoning is largely speculative and indirect. The model draws analogies to mammalian Sp1/Sp3 orthologs and general Sp/KLF family functions without citing specific evidence for sptf-3 in C. elegans longevity. The mechanism classification as "epigenetic_alterations" is questionable — sptf-3 is a transcription factor, and while it has chromatin binding activity, classifying it primarily as an epigenetic regulator rather than a transcriptional regulator is a stretch. The reasoning relies heavily on inference from distant relatives and general pathway associations rather than direct evidence. Confidence of 0.52 is appropriately low given the indirect reasoning, but the mechanistic explanation is not well-grounded in actual sptf-3 biology.
Raw API responses
solver
{
"reasoning": "sptf-3 encodes a Specificity Protein (Sp) family transcription factor that binds GC-rich cis-regulatory elements and recruits RNA Pol II to target gene promoters. In C. elegans, Sp/KLF-family transcription factors are known regulators of stress response, metabolism, and longevity pathways; the closest mammalian orthologs (Sp1/Sp3) regulate genes involved in autophagy, mitochondrial biogenesis, and insulin/IGF-1 signaling. Its chromatin-binding activity suggests it modulates the epigenetic landscape at target loci, consistent with the epigenetic alterations hallmark. Sp-family factors in worms have been linked to DAF-16/FOXO target gene regulation and lifespan extension under reduced IIS. Loss of such a broadly acting transcriptional activator would likely impair expression of pro-longevity stress-response genes, making the wild-type function net pro-longevity, though the evidence is indirect.",
"confidence": 0.52,
"key_pathways": [
"RNA Pol II transcriptional regulation at GC-rich promoters",
"Insulin/IGF-1 signaling (DAF-2/DAF-16) target gene expression",
"Chromatin remodeling and epigenetic gene regulation"
],
"mechanism_class": "epigenetic_alterations",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity, but the reasoning is largely speculative and indirect. The model draws analogies to mammalian Sp1/Sp3 orthologs and general Sp/KLF family functions without citing specific evidence for sptf-3 in C. elegans longevity. The mechanism classification as \"epigenetic_alterations\" is questionable — sptf-3 is a transcription factor, and while it has chromatin binding activity, classifying it primarily as an epigenetic regulator rather than a transcriptional regulator is a stretch. The reasoning relies heavily on inference from distant relatives and general pathway associations rather than direct evidence. Confidence of 0.52 is appropriately low given the indirect reasoning, but the mechanistic explanation is not well-grounded in actual sptf-3 biology.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": true,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}