Endoribonuclease EndoA

UniProtKB accession:  P96622

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Toxic component of a type II toxin-antitoxin (TA) system. Specific for 5'-UACAU-3' sequences, cleaving after the first U (PubMed:21763692). Yields cleavage products with 3' phosphate and 5' hydroxyl groups (PubMed:15882409). Cannot digest substrate with a UUdUACAUAA cleavage site (PubMed:24120662). Overexpression is toxic for cell growth (shown in E.coli), probably by inhibiting protein synthesis through the cleavage of single-stranded RNA. The toxicity is reversed by the antitoxin EndoAI. Toxin activity cannot be inhibited by MazE from E.coli. The EndoA-EndoAI complex does not seem to bind its own promoter (PubMed:24120662).