dpy-27
C. elegans
Chromosome condensation protein dpy-27
What the model saw
Gene: dpy-27 Organism: Caenorhabditis elegans Known functions: Chromosome condensation protein dpy-27. ATP binding. ATP hydrolysis activity. protein binding. sequence-specific DNA binding.
View unredacted entry
Chromosome condensation protein dpy-27. ATP binding. ATP hydrolysis activity. protein binding. sequence-specific DNA binding.
Solver output
DPY-27 is a condensin I complex component (SMC4-like ATPase) in C. elegans that is specifically required for dosage compensation on the X chromosomes of hermaphrodites, where it mediates chromosome-wide transcriptional repression by compacting chromatin. Its ATP hydrolysis and sequence-specific DNA binding activities drive condensin-mediated chromosome condensation and epigenetic gene regulation. While proper dosage compensation is essential for viability, the direct role of dpy-27 in modulating longevity pathways is not well established — loss of function causes dumpy/lethal phenotypes due to dosage compensation failure rather than a clean pro- or anti-longevity effect. The gene's primary function is in X-chromosome-wide epigenetic silencing rather than in canonical aging pathways such as insulin/IGF-1 signaling or mitochondrial function, making a directional longevity prediction ambiguous.
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 identified dpy-27's role in dosage compensation and condensin-mediated chromosome compaction, but predicted "unclear" rather than the correct "pro_longevity" classification. The model's reasoning about loss-of-function causing dumpy/lethal phenotypes is accurate, but it failed to account for the possibility that partial reduction or specific manipulation of dpy-27 could extend lifespan. The model was appropriately uncertain given the complexity, but the ground truth indicates a pro_longevity influence. The mechanistic reasoning about the gene's function is largely correct, but the model couldn't connect this to a longevity direction. This is a case where the model was appropriately uncertain rather than confidently wrong.
Raw API responses
solver
{
"reasoning": "DPY-27 is a condensin I complex component (SMC4-like ATPase) in C. elegans that is specifically required for dosage compensation on the X chromosomes of hermaphrodites, where it mediates chromosome-wide transcriptional repression by compacting chromatin. Its ATP hydrolysis and sequence-specific DNA binding activities drive condensin-mediated chromosome condensation and epigenetic gene regulation. While proper dosage compensation is essential for viability, the direct role of dpy-27 in modulating longevity pathways is not well established — loss of function causes dumpy/lethal phenotypes due to dosage compensation failure rather than a clean pro- or anti-longevity effect. The gene's primary function is in X-chromosome-wide epigenetic silencing rather than in canonical aging pathways such as insulin/IGF-1 signaling or mitochondrial function, making a directional longevity prediction ambiguous.",
"confidence": 0.42,
"key_pathways": [
"dosage compensation complex (DCC)",
"condensin-mediated chromosome compaction",
"X-chromosome epigenetic silencing"
],
"mechanism_class": "epigenetic_alterations",
"longevity_influence": "unclear"
}advisor
{
"notes": "The model correctly identified dpy-27's role in dosage compensation and condensin-mediated chromosome compaction, but predicted \"unclear\" rather than the correct \"pro_longevity\" classification. The model's reasoning about loss-of-function causing dumpy/lethal phenotypes is accurate, but it failed to account for the possibility that partial reduction or specific manipulation of dpy-27 could extend lifespan. The model was appropriately uncertain given the complexity, but the ground truth indicates a pro_longevity influence. The mechanistic reasoning about the gene's function is largely correct, but the model couldn't connect this to a longevity direction. This is a case where the model was appropriately uncertain rather than confidently wrong.",
"failure_mode": "appropriately_uncertain",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 3,
"ground_truth_questionable": true
}