Arhgap1
M. musculus
Rho GTPase activating protein 1
What the model saw
Gene: Arhgap1 Organism: Mus musculus Known functions: Rho GTPase activating protein 1. rho GTPase-activating protein 1. GTPase activator activity. protein binding. small GTPase binding.
View unredacted entry
Rho GTPase activating protein 1. rho GTPase-activating protein 1. GTPase activator activity. protein binding. small GTPase binding.
Solver output
Arhgap1 encodes a RhoGAP (GTPase-activating protein) that stimulates the intrinsic GTPase activity of Rho family GTPases (e.g., RhoA, Rac1, Cdc42), accelerating their conversion to the inactive GDP-bound state. Rho GTPases are central regulators of actin cytoskeleton dynamics, cell polarity, and proliferation. By inactivating Rho GTPases, Arhgap1 dampens downstream effectors such as ROCK and mDia, which are important for cytoskeletal integrity and mechanosensing. Suppression of Rac1 activity in particular has been linked to impaired autophagy flux and reduced mitochondrial ROS scavenging, both of which can accelerate cellular aging. Additionally, Rho GTPase signaling through Rac1/Cdc42 supports stem cell maintenance and tissue regeneration; chronic inactivation via GAP activity could contribute to stem cell exhaustion and senescence-associated phenotypes. The net effect of constitutive Rho GTPase inactivation is therefore expected to be detrimental to longevity-promoting cellular processes.
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 anti_longevity while the ground truth is pro_longevity. The model constructed a plausible-sounding but ultimately incorrect mechanistic argument about Rho GTPase inactivation leading to stem cell exhaustion and senescence. In reality, Arhgap1 (RhoGAP1) appears to be pro-longevity in mice, suggesting that inactivation of Rho GTPases via this GAP may actually be beneficial for longevity - perhaps by reducing RhoA-mediated stress fiber formation, limiting inflammatory signaling, or preventing excessive cytoskeletal tension that could drive cellular damage. The model's reasoning about Rac1 suppression impairing autophagy and ROS scavenging is speculative and not well-supported. The confidence of 0.55 is relatively low, but the model still committed to the wrong answer. The mechanistic reasoning is also incorrect in its conclusion.
Raw API responses
solver
{
"reasoning": "Arhgap1 encodes a RhoGAP (GTPase-activating protein) that stimulates the intrinsic GTPase activity of Rho family GTPases (e.g., RhoA, Rac1, Cdc42), accelerating their conversion to the inactive GDP-bound state. Rho GTPases are central regulators of actin cytoskeleton dynamics, cell polarity, and proliferation. By inactivating Rho GTPases, Arhgap1 dampens downstream effectors such as ROCK and mDia, which are important for cytoskeletal integrity and mechanosensing. Suppression of Rac1 activity in particular has been linked to impaired autophagy flux and reduced mitochondrial ROS scavenging, both of which can accelerate cellular aging. Additionally, Rho GTPase signaling through Rac1/Cdc42 supports stem cell maintenance and tissue regeneration; chronic inactivation via GAP activity could contribute to stem cell exhaustion and senescence-associated phenotypes. The net effect of constitutive Rho GTPase inactivation is therefore expected to be detrimental to longevity-promoting cellular processes.",
"confidence": 0.55,
"key_pathways": [
"Rho GTPase signaling (RhoA/Rac1/Cdc42 inactivation)",
"Actin cytoskeleton dynamics and ROCK signaling",
"Stem cell maintenance and tissue regeneration"
],
"mechanism_class": "cellular_senescence",
"longevity_influence": "anti_longevity"
}advisor
{
"notes": "The model predicted anti_longevity while the ground truth is pro_longevity. The model constructed a plausible-sounding but ultimately incorrect mechanistic argument about Rho GTPase inactivation leading to stem cell exhaustion and senescence. In reality, Arhgap1 (RhoGAP1) appears to be pro-longevity in mice, suggesting that inactivation of Rho GTPases via this GAP may actually be beneficial for longevity - perhaps by reducing RhoA-mediated stress fiber formation, limiting inflammatory signaling, or preventing excessive cytoskeletal tension that could drive cellular damage. The model's reasoning about Rac1 suppression impairing autophagy and ROS scavenging is speculative and not well-supported. The confidence of 0.55 is relatively low, but the model still committed to the wrong answer. The mechanistic reasoning is also incorrect in its conclusion.",
"failure_mode": "confident_wrong",
"answer_correct": false,
"mechanism_correct": false,
"reasoning_quality": 2,
"ground_truth_questionable": false
}