NLaz
D. melanogaster
Neural Lazarillo
What the model saw
Gene: NLaz Organism: Drosophila melanogaster Known functions: Neural Lazarillo. neural lazarillo. pigment binding.
View unredacted entry
Neural Lazarillo. neural lazarillo. pigment binding.
Solver output
NLaz (Neural Lazarillo) is a Drosophila lipocalin-family protein and ortholog of human ApoD, known to bind and transport small hydrophobic ligands including lipids and pigments. Lipocalins like NLaz are functionally linked to lipid metabolism and stress responses. In Drosophila, NLaz has been shown to antagonize insulin/IGF-1 signaling (IIS) — a central nutrient-sensing pathway — by suppressing downstream PI3K/Akt activity, which paradoxically promotes stress resistance but at the cost of normal growth and metabolic homeostasis. Overexpression of NLaz reduces IIS activity and can shorten lifespan under certain conditions, while its loss can extend lifespan in some contexts, suggesting its normal function opposes longevity by dampening pro-survival IIS outputs. Its pigment/lipid-binding activity places it upstream of lipid-mediated signaling that modulates oxidative stress responses and metabolic regulation, key determinants of aging rate in flies.
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 NLaz as anti_longevity, but the ground truth is pro_longevity. The model's mechanistic reasoning is also inverted - it claims NLaz overexpression shortens lifespan and its loss extends lifespan, but the actual literature shows NLaz is pro-longevity (overexpression extends lifespan). NLaz (Neural Lazarillo) is a lipocalin that, like its paralog GLaz, provides stress protection and extends lifespan when overexpressed in Drosophila. The model correctly identifies NLaz as a lipocalin involved in IIS modulation and stress responses, but gets the directionality backwards. The model's confidence of 0.65 is notable given the incorrect answer. The reasoning about IIS antagonism is partially correct in mechanism but the conclusion about longevity effect is wrong.
Raw API responses
solver
{
"reasoning": "NLaz (Neural Lazarillo) is a Drosophila lipocalin-family protein and ortholog of human ApoD, known to bind and transport small hydrophobic ligands including lipids and pigments. Lipocalins like NLaz are functionally linked to lipid metabolism and stress responses. In Drosophila, NLaz has been shown to antagonize insulin/IGF-1 signaling (IIS) — a central nutrient-sensing pathway — by suppressing downstream PI3K/Akt activity, which paradoxically promotes stress resistance but at the cost of normal growth and metabolic homeostasis. Overexpression of NLaz reduces IIS activity and can shorten lifespan under certain conditions, while its loss can extend lifespan in some contexts, suggesting its normal function opposes longevity by dampening pro-survival IIS outputs. Its pigment/lipid-binding activity places it upstream of lipid-mediated signaling that modulates oxidative stress responses and metabolic regulation, key determinants of aging rate in flies.",
"confidence": 0.65,
"key_pathways": [
"insulin/IGF-1 signaling (IIS)",
"lipid transport and metabolism",
"oxidative stress response"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted NLaz as anti_longevity, but the ground truth is pro_longevity. The model's mechanistic reasoning is also inverted - it claims NLaz overexpression shortens lifespan and its loss extends lifespan, but the actual literature shows NLaz is pro-longevity (overexpression extends lifespan). NLaz (Neural Lazarillo) is a lipocalin that, like its paralog GLaz, provides stress protection and extends lifespan when overexpressed in Drosophila. The model correctly identifies NLaz as a lipocalin involved in IIS modulation and stress responses, but gets the directionality backwards. The model's confidence of 0.65 is notable given the incorrect answer. The reasoning about IIS antagonism is partially correct in mechanism but the conclusion about longevity effect is wrong.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}