Nf1
D. melanogaster
Neurofibromin 1
What the model saw
Gene: Nf1 Organism: Drosophila melanogaster Known functions: Neurofibromin 1. neurofibromin 1. GTPase activator activity.
View unredacted entry
Neurofibromin 1. neurofibromin 1. GTPase activator activity.
Solver output
Neurofibromin 1 (Nf1) functions as a GTPase-activating protein (GAP) that accelerates the intrinsic GTPase activity of RAS, converting active RAS-GTP to inactive RAS-GDP. By negatively regulating RAS, Nf1 suppresses downstream RAS/MAPK and PI3K/AKT/TOR signaling. In Drosophila, reduced RAS-ERK and reduced insulin/TOR pathway activity are well-established pro-longevity interventions. Loss of Nf1 leads to hyperactivated RAS and consequently elevated TOR signaling, which is anti-longevity. Therefore, the normal (wild-type) function of Nf1 — dampening RAS-GTP levels — restrains nutrient-sensing/growth pathways and promotes longevity. Additionally, Nf1 in Drosophila has been shown to modulate cAMP/PKA signaling, further linking it to metabolic and growth regulation relevant to lifespan.
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 correctly predicted pro_longevity for Nf1 in Drosophila. The mechanistic reasoning is sound: Nf1 as a RAS-GAP suppresses RAS/MAPK and downstream PI3K/AKT/TOR signaling, and the model correctly identifies that loss of Nf1 leads to hyperactivated RAS and elevated TOR signaling (anti-longevity), while wild-type Nf1 function promotes longevity by restraining these pathways. The mention of cAMP/PKA signaling is also accurate for Drosophila Nf1. The reasoning is well-structured and biologically accurate. Minor deduction: the model could have cited specific experimental evidence (e.g., Nf1 mutant lifespan studies in Drosophila) rather than relying primarily on pathway logic, but the overall reasoning is solid.
Raw API responses
solver
{
"reasoning": "Neurofibromin 1 (Nf1) functions as a GTPase-activating protein (GAP) that accelerates the intrinsic GTPase activity of RAS, converting active RAS-GTP to inactive RAS-GDP. By negatively regulating RAS, Nf1 suppresses downstream RAS/MAPK and PI3K/AKT/TOR signaling. In Drosophila, reduced RAS-ERK and reduced insulin/TOR pathway activity are well-established pro-longevity interventions. Loss of Nf1 leads to hyperactivated RAS and consequently elevated TOR signaling, which is anti-longevity. Therefore, the normal (wild-type) function of Nf1 — dampening RAS-GTP levels — restrains nutrient-sensing/growth pathways and promotes longevity. Additionally, Nf1 in Drosophila has been shown to modulate cAMP/PKA signaling, further linking it to metabolic and growth regulation relevant to lifespan.",
"confidence": 0.72,
"key_pathways": [
"RAS/MAPK signaling",
"PI3K/AKT/TOR nutrient sensing",
"cAMP/PKA signaling"
],
"mechanism_class": "deregulated_nutrient_sensing",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for Nf1 in Drosophila. The mechanistic reasoning is sound: Nf1 as a RAS-GAP suppresses RAS/MAPK and downstream PI3K/AKT/TOR signaling, and the model correctly identifies that loss of Nf1 leads to hyperactivated RAS and elevated TOR signaling (anti-longevity), while wild-type Nf1 function promotes longevity by restraining these pathways. The mention of cAMP/PKA signaling is also accurate for Drosophila Nf1. The reasoning is well-structured and biologically accurate. Minor deduction: the model could have cited specific experimental evidence (e.g., Nf1 mutant lifespan studies in Drosophila) rather than relying primarily on pathway logic, but the overall reasoning is solid.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 4,
"ground_truth_questionable": false
}