Endoribonuclease EndoA - P96622 (ENDOA_BACSU)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P96622: 3
Toxic component of a type II toxin-antitoxin (TA) module. 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). UniProt
Pathway Maps
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Subunit Structure
Homodimer (PubMed:14517982, PubMed:24120662). Forms a complex with antitoxin EndoAI in which the toxin activity is inhibited (PubMed:15882409). One dimer binds a ssRNA substrate, forms a heterohexamer composed of alternating toxin and antitoxin homodimers which inhibits the endoribonuclease activity. Antitoxin prevents RNA binding to the endoribonuclease (PubMed:24120662). UniProt
  • Other Gene names: ndoA, mazF, ydcE, BSU04660
This protein in other organisms (by gene name):
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