unc-52

C. elegans

Basement membrane proteoglycan;Basement membrane-specific heparan sulfate proteoglycan core protein;Ig-like domain-containing protein

What the model saw

Gene: unc-52
Organism: Caenorhabditis elegans
Known functions: Basement membrane proteoglycan;Basement membrane-specific heparan sulfate proteoglycan core protein;Ig-like domain-containing protein. calcium ion binding. extracellular matrix structural constituent.

View unredacted entry

Basement membrane proteoglycan;Basement membrane-specific heparan sulfate proteoglycan core protein;Ig-like domain-containing protein. calcium ion binding. extracellular matrix structural constituent.

Solver output

Predicted influence

Pro-longevity

Confidence

62%

Mechanism

Altered intercellular communication

Reasoning

unc-52 encodes the C. elegans ortholog of perlecan, a large heparan sulfate proteoglycan that is a core structural component of the basement membrane extracellular matrix (ECM). Perlecan/UNC-52 organizes and stabilizes the ECM by binding growth factors, signaling molecules, and other matrix proteins via its heparan sulfate chains and Ig-like domains, thereby regulating intercellular communication and tissue integrity. Maintenance of ECM integrity is increasingly recognized as a hallmark of healthy aging; ECM deterioration with age contributes to tissue dysfunction and reduced organismal fitness. In C. elegans, basement membrane integrity is required for proper muscle attachment and function, and ECM remodeling is linked to lifespan regulation. Calcium ion binding via its domains further supports structural ECM organization. Loss of unc-52 function leads to severe paralysis and developmental arrest, consistent with a pro-longevity role for its normal function in preserving tissue homeostasis and intercellular signaling fidelity.

Key pathways

extracellular matrix integrity and basement membrane organizationheparan sulfate proteoglycan-mediated growth factor signalingmuscle-ECM attachment and tissue homeostasis

Longevity influence

Anti-longevity

Lifespan effect

Increase

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

Answer

✗Incorrect

Mechanism

✗Incorrect

Reasoning quality

2/5

Failure mode

Confident wrong

Notes

The model predicted pro_longevity but the ground truth is anti_longevity. The model's reasoning that ECM integrity maintenance is pro-longevity is plausible in general, but it fails to account for the actual experimental evidence in C. elegans where unc-52 mutations or reduced function extends lifespan, making it anti_longevity (i.e., the gene normally limits lifespan). The model's logic that "loss of function leads to paralysis" and therefore the gene must be pro-longevity is flawed - paralysis and lifespan extension can co-occur in C. elegans (e.g., eat-2 mutants). The model also incorrectly classified the mechanism as "altered_intercellular_communication" when the actual mechanism would be more related to ECM structural changes. The confidence of 0.62 is moderate but the prediction is still clearly wrong.

Raw API responses

solver

{
  "reasoning": "unc-52 encodes the C. elegans ortholog of perlecan, a large heparan sulfate proteoglycan that is a core structural component of the basement membrane extracellular matrix (ECM). Perlecan/UNC-52 organizes and stabilizes the ECM by binding growth factors, signaling molecules, and other matrix proteins via its heparan sulfate chains and Ig-like domains, thereby regulating intercellular communication and tissue integrity. Maintenance of ECM integrity is increasingly recognized as a hallmark of healthy aging; ECM deterioration with age contributes to tissue dysfunction and reduced organismal fitness. In C. elegans, basement membrane integrity is required for proper muscle attachment and function, and ECM remodeling is linked to lifespan regulation. Calcium ion binding via its domains further supports structural ECM organization. Loss of unc-52 function leads to severe paralysis and developmental arrest, consistent with a pro-longevity role for its normal function in preserving tissue homeostasis and intercellular signaling fidelity.",
  "confidence": 0.62,
  "key_pathways": [
    "extracellular matrix integrity and basement membrane organization",
    "heparan sulfate proteoglycan-mediated growth factor signaling",
    "muscle-ECM attachment and tissue homeostasis"
  ],
  "mechanism_class": "altered_intercellular_communication",
  "longevity_influence": "pro_longevity"
}

advisor

{
  "notes": "The model predicted pro_longevity but the ground truth is anti_longevity. The model's reasoning that ECM integrity maintenance is pro-longevity is plausible in general, but it fails to account for the actual experimental evidence in C. elegans where unc-52 mutations or reduced function extends lifespan, making it anti_longevity (i.e., the gene normally limits lifespan). The model's logic that \"loss of function leads to paralysis\" and therefore the gene must be pro-longevity is flawed - paralysis and lifespan extension can co-occur in C. elegans (e.g., eat-2 mutants). The model also incorrectly classified the mechanism as \"altered_intercellular_communication\" when the actual mechanism would be more related to ECM structural changes. The confidence of 0.62 is moderate but the prediction is still clearly wrong.",
  "failure_mode": "confident_wrong",
  "answer_correct": false,
  "mechanism_correct": false,
  "reasoning_quality": 2,
  "ground_truth_questionable": false
}