DCK1
S. cerevisiae
guanine nucleotide exchange factor DCK1
What the model saw
Gene: DCK1 Organism: Saccharomyces cerevisiae Known functions: guanine nucleotide exchange factor DCK1. guanyl-nucleotide exchange factor activity. protein binding. small GTPase binding.
View unredacted entry
guanine nucleotide exchange factor DCK1. guanyl-nucleotide exchange factor activity. protein binding. small GTPase binding.
Solver output
DCK1 encodes a guanine nucleotide exchange factor (GEF) that activates small GTPases by catalyzing GDP-to-GTP exchange. In yeast, DCK1 (together with its partner MUK1) acts as a GEF for the Rab GTPase Vps21/Ypt51, which regulates endosomal trafficking. While endosomal/vacuolar trafficking is linked to autophagy and proteostasis pathways relevant to aging, the direct longevity impact of DCK1's GEF activity on small GTPases is not well-characterized. The molecular function annotations (GEF activity, small GTPase binding, protein binding) are consistent with roles in vesicular trafficking and signaling, but do not unambiguously point to a pro- or anti-longevity direction without additional context on which downstream GTPase pathways are modulated and how they intersect with known aging regulators such as TORC1 or autophagy.
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 "unclear" with low confidence (0.35), but the ground truth is "anti_longevity." The model correctly identified DCK1's role as a GEF for small GTPases and mentioned endosomal trafficking, but failed to commit to a direction. The mechanism class chosen ("altered_intercellular_communication") seems poorly matched to the actual biology described (endosomal/vacuolar trafficking would be more consistent with proteostasis or autophagy). The model's uncertainty was somewhat reasonable given limited direct evidence, but it still missed the correct answer. The reasoning quality is modest - it correctly identifies the molecular function but doesn't leverage the anti-longevity logic (e.g., that deletion of DCK1 might extend lifespan, making it anti-longevity).
Raw API responses
solver
{
"reasoning": "DCK1 encodes a guanine nucleotide exchange factor (GEF) that activates small GTPases by catalyzing GDP-to-GTP exchange. In yeast, DCK1 (together with its partner MUK1) acts as a GEF for the Rab GTPase Vps21/Ypt51, which regulates endosomal trafficking. While endosomal/vacuolar trafficking is linked to autophagy and proteostasis pathways relevant to aging, the direct longevity impact of DCK1's GEF activity on small GTPases is not well-characterized. The molecular function annotations (GEF activity, small GTPase binding, protein binding) are consistent with roles in vesicular trafficking and signaling, but do not unambiguously point to a pro- or anti-longevity direction without additional context on which downstream GTPase pathways are modulated and how they intersect with known aging regulators such as TORC1 or autophagy.",
"confidence": 0.35,
"key_pathways": [
"Rab GTPase activation / endosomal trafficking",
"vacuolar protein sorting",
"small GTPase signaling"
],
"mechanism_class": "altered_intercellular_communication",
"longevity_influence": "unclear"
}advisor
{
"notes": "The model predicted \"unclear\" with low confidence (0.35), but the ground truth is \"anti_longevity.\" The model correctly identified DCK1's role as a GEF for small GTPases and mentioned endosomal trafficking, but failed to commit to a direction. The mechanism class chosen (\"altered_intercellular_communication\") seems poorly matched to the actual biology described (endosomal/vacuolar trafficking would be more consistent with proteostasis or autophagy). The model's uncertainty was somewhat reasonable given limited direct evidence, but it still missed the correct answer. The reasoning quality is modest - it correctly identifies the molecular function but doesn't leverage the anti-longevity logic (e.g., that deletion of DCK1 might extend lifespan, making it anti-longevity).",
"failure_mode": "appropriately_uncertain",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}