Pathway Summary for ENDOU

Overview

ENDOU (Poly(U)-specific endoribonuclease) is an endoribonuclease that specifically cleaves single-stranded RNA at uridine residues. It functions in RNA quality control and turnover, particularly in processing defective or unwanted RNA molecules. ENDOU localizes to the endoplasmic reticulum and participates in cellular stress responses and RNA metabolism.

Core Pathways

RNA Quality Control

ENDOU participates in RNA surveillance by:
- Cleaving aberrant poly(U) sequences
- Removing defective mRNAs
- Processing stress-induced RNAs
- Contributing to RNA turnover

ER Stress Response

During ER stress, ENDOU:
- Processes ER-localized RNAs
- Contributes to unfolded protein response
- Regulates RNA stability under stress
- Modulates protein synthesis

Pathway Diagram

graph TD A["Aberrant RNA/poly(U)"] --> B["ENDOU: Endoribonuclease (ER)"] B -->|cleavage| C[RNA Fragments] C --> D[RNA Degradation] E[ER Stress] --> F[UPR Activation] F --> B G[Viral RNA] --> B B --> H[Antiviral Response] I[Quality Control] --> B B --> J[RNA Turnover] style B fill:#f9f,stroke:#333,stroke-width:2px

Molecular Function

Clinical Significance