chico
D. melanogaster
chico
What the model saw
Gene: chico Organism: Drosophila melanogaster Known functions: chico. SH2 domain binding. insulin receptor binding. insulin-like growth factor receptor binding. phosphatidylinositol 3-kinase binding. protein binding. transmembrane receptor protein tyrosine kinase adaptor activity.
View unredacted entry
chico. SH2 domain binding. insulin receptor binding. insulin-like growth factor receptor binding. phosphatidylinositol 3-kinase binding. protein binding. transmembrane receptor protein tyrosine kinase adaptor activity.
Solver output
chico encodes the Drosophila ortholog of insulin receptor substrate (IRS), acting as the key adaptor protein downstream of the insulin/IGF receptor. It binds the insulin receptor via its PTB/SH2 domains and recruits PI3-kinase, activating the canonical IIS (insulin/IGF-1 signaling) pathway leading to Akt/PKB activation and FOXO transcription factor nuclear exclusion. Loss-of-function mutations in chico reduce IIS signaling, which mimics dietary restriction and derepresses the FOXO transcription factor (dFOXO), upregulating stress resistance and longevity genes. Hypomorphic chico mutants in Drosophila are among the best-characterized long-lived mutants, with lifespan extensions of ~48% documented in homozygous chico1 females. Thus, the normal (wild-type) function of chico — promoting full IIS pathway activity — suppresses longevity by keeping FOXO inactive, meaning loss of chico is pro-longevity; however, the gene's normal function is anti-longevity relative to the organism's lifespan potential.
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's mechanistic reasoning is excellent and accurate - chico is the Drosophila IRS ortholog, loss-of-function extends lifespan by reducing IIS signaling and derepressing dFOXO. The model even correctly identifies that chico's normal function suppresses longevity (anti_longevity). However, the model contradicts itself in the final prediction, outputting "pro_longevity" when the ground truth is "anti_longevity." The model's own reasoning explicitly states "the gene's normal function is anti-longevity relative to the organism's lifespan potential," yet the final JSON answer says "pro_longevity." This is a clear self-contradiction where the reasoning leads to the correct conclusion but the final answer is wrong. The model appears confused about the GenAge convention: GenAge labels chico as "anti_longevity" because its normal function promotes IIS signaling which suppresses lifespan (i.e., the gene works against longevity). The model understood this but still output the wrong label.
Raw API responses
solver
{
"reasoning": "chico encodes the Drosophila ortholog of insulin receptor substrate (IRS), acting as the key adaptor protein downstream of the insulin/IGF receptor. It binds the insulin receptor via its PTB/SH2 domains and recruits PI3-kinase, activating the canonical IIS (insulin/IGF-1 signaling) pathway leading to Akt/PKB activation and FOXO transcription factor nuclear exclusion. Loss-of-function mutations in chico reduce IIS signaling, which mimics dietary restriction and derepresses the FOXO transcription factor (dFOXO), upregulating stress resistance and longevity genes. Hypomorphic chico mutants in Drosophila are among the best-characterized long-lived mutants, with lifespan extensions of ~48% documented in homozygous chico1 females. Thus, the normal (wild-type) function of chico — promoting full IIS pathway activity — suppresses longevity by keeping FOXO inactive, meaning loss of chico is pro-longevity; however, the gene's normal function is anti-longevity relative to the organism's lifespan potential.",
"confidence": 0.93,
"key_pathways": [
"insulin/IGF-1 signaling (IIS) pathway",
"PI3K-Akt-FOXO axis",
"nutrient sensing and growth signaling"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model's mechanistic reasoning is excellent and accurate - chico is the Drosophila IRS ortholog, loss-of-function extends lifespan by reducing IIS signaling and derepressing dFOXO. The model even correctly identifies that chico's normal function suppresses longevity (anti_longevity). However, the model contradicts itself in the final prediction, outputting \"pro_longevity\" when the ground truth is \"anti_longevity.\" The model's own reasoning explicitly states \"the gene's normal function is anti-longevity relative to the organism's lifespan potential,\" yet the final JSON answer says \"pro_longevity.\" This is a clear self-contradiction where the reasoning leads to the correct conclusion but the final answer is wrong. The model appears confused about the GenAge convention: GenAge labels chico as \"anti_longevity\" because its normal function promotes IIS signaling which suppresses lifespan (i.e., the gene works against longevity). The model understood this but still output the wrong label.",
"failure_mode": "right_answer_wrong_reasoning",
"answer_correct": false,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}