ure4
S. pombe
urease accessory protein UreD
What the model saw
Gene: ure4 Organism: Schizosaccharomyces pombe Known functions: urease accessory protein UreD. nickel cation binding. urease activator activity.
View unredacted entry
urease accessory protein UreD. nickel cation binding. urease activator activity.
Solver output
ure4 encodes a urease accessory protein (UreD homolog) that binds nickel cations and activates urease, an enzyme that hydrolyzes urea into ammonia and CO2. In S. pombe, urease activity is involved in nitrogen metabolism and recycling. While nitrogen sensing is connected to TOR signaling and nutrient sensing pathways relevant to longevity, the specific role of urease activation via nickel binding does not map cleanly to a pro- or anti-longevity mechanism. Urease accessory proteins are chaperone-like factors that insert nickel into the urease active site, a highly specialized biochemical function with no well-established direct link to aging hallmarks in yeast. The connection to longevity through nitrogen catabolism is too indirect and insufficiently characterized in S. pombe to make a confident directional prediction.
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), while the ground truth is "anti_longevity." The model's reasoning about urease accessory protein function and nickel binding is technically accurate, but it failed to make a directional prediction. The model correctly identified the nitrogen metabolism/TOR connection as potentially relevant but dismissed it as too indirect. Given the specialized and obscure nature of this gene's role in longevity, the model's uncertainty is understandable, but it still got the answer wrong. The mechanism is not addressed since the model couldn't determine a direction.
Raw API responses
solver
{
"reasoning": "ure4 encodes a urease accessory protein (UreD homolog) that binds nickel cations and activates urease, an enzyme that hydrolyzes urea into ammonia and CO2. In S. pombe, urease activity is involved in nitrogen metabolism and recycling. While nitrogen sensing is connected to TOR signaling and nutrient sensing pathways relevant to longevity, the specific role of urease activation via nickel binding does not map cleanly to a pro- or anti-longevity mechanism. Urease accessory proteins are chaperone-like factors that insert nickel into the urease active site, a highly specialized biochemical function with no well-established direct link to aging hallmarks in yeast. The connection to longevity through nitrogen catabolism is too indirect and insufficiently characterized in S. pombe to make a confident directional prediction.",
"confidence": 0.35,
"key_pathways": [
"urease activation / nickel metallocenter assembly",
"nitrogen catabolism",
"TOR/nutrient sensing (indirect)"
],
"mechanism_class": "unclear",
"longevity_influence": "unclear"
}advisor
{
"notes": "The model predicted \"unclear\" with low confidence (0.35), while the ground truth is \"anti_longevity.\" The model's reasoning about urease accessory protein function and nickel binding is technically accurate, but it failed to make a directional prediction. The model correctly identified the nitrogen metabolism/TOR connection as potentially relevant but dismissed it as too indirect. Given the specialized and obscure nature of this gene's role in longevity, the model's uncertainty is understandable, but it still got the answer wrong. The mechanism is not addressed since the model couldn't determine a direction.",
"failure_mode": "appropriately_uncertain",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": true
}