Ire1
D. melanogaster
Inositol-requiring enzyme-1
What the model saw
Gene: Ire1 Organism: Drosophila melanogaster Known functions: Inositol-requiring enzyme-1. ATP binding. RNA endonuclease activity. RNA nuclease activity. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity. unfolded protein binding.
View unredacted entry
Inositol-requiring enzyme-1. ATP binding. RNA endonuclease activity. RNA nuclease activity. protein kinase activity. protein serine kinase activity. protein serine/threonine kinase activity. unfolded protein binding.
Solver output
IRE1 (Inositol-Requiring Enzyme 1) is the most conserved branch of the Unfolded Protein Response (UPR), acting as a dual-function kinase/endoribonuclease that senses misfolded proteins in the ER lumen via its unfolded protein binding domain. Upon activation, its RNA endonuclease activity splices Xbp1 mRNA (unconventional splicing), producing the active transcription factor XBP1s, which upregulates ER chaperones, ERAD components, and protein folding machinery to restore proteostasis. Its serine/threonine kinase activity also activates downstream signaling (e.g., JNK pathway) to further coordinate stress responses. Maintaining robust IRE1-mediated UPR is critical for clearing misfolded protein burden that accumulates with age, and loss of IRE1/XBP1 signaling accelerates proteostatic collapse and shortens lifespan in multiple model organisms including C. elegans and Drosophila. Therefore, the normal function of Ire1 in sustaining ER proteostasis is pro-longevity.
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 Ire1 in Drosophila melanogaster. The mechanistic reasoning is thorough and accurate: IRE1 as the most conserved UPR branch, its dual kinase/endonuclease function, unconventional splicing of Xbp1 mRNA to produce XBP1s, downstream effects on ER proteostasis, and the connection to aging via proteostatic collapse. The model also correctly notes cross-organism evidence from C. elegans and Drosophila. Confidence of 0.75 is appropriate given the specificity of the Drosophila context.
Raw API responses
solver
{
"reasoning": "IRE1 (Inositol-Requiring Enzyme 1) is the most conserved branch of the Unfolded Protein Response (UPR), acting as a dual-function kinase/endoribonuclease that senses misfolded proteins in the ER lumen via its unfolded protein binding domain. Upon activation, its RNA endonuclease activity splices Xbp1 mRNA (unconventional splicing), producing the active transcription factor XBP1s, which upregulates ER chaperones, ERAD components, and protein folding machinery to restore proteostasis. Its serine/threonine kinase activity also activates downstream signaling (e.g., JNK pathway) to further coordinate stress responses. Maintaining robust IRE1-mediated UPR is critical for clearing misfolded protein burden that accumulates with age, and loss of IRE1/XBP1 signaling accelerates proteostatic collapse and shortens lifespan in multiple model organisms including C. elegans and Drosophila. Therefore, the normal function of Ire1 in sustaining ER proteostasis is pro-longevity.",
"confidence": 0.75,
"key_pathways": [
"Unfolded Protein Response (UPR) / IRE1-XBP1 axis",
"ER proteostasis and ERAD",
"JNK stress signaling"
],
"mechanism_class": "loss_of_proteostasis",
"longevity_influence": "pro_longevity"
}advisor
{
"notes": "The model correctly predicted pro_longevity for Ire1 in Drosophila melanogaster. The mechanistic reasoning is thorough and accurate: IRE1 as the most conserved UPR branch, its dual kinase/endonuclease function, unconventional splicing of Xbp1 mRNA to produce XBP1s, downstream effects on ER proteostasis, and the connection to aging via proteostatic collapse. The model also correctly notes cross-organism evidence from C. elegans and Drosophila. Confidence of 0.75 is appropriate given the specificity of the Drosophila context.",
"failure_mode": "correct",
"answer_correct": true,
"mechanism_correct": true,
"reasoning_quality": 5,
"ground_truth_questionable": false
}