Endoribonuclease EndoA - P96622 (ENDOA_BACSU)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P96622: 3
 
Function
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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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
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  • Red: potentially disorderd region
  • Blue: probably ordered region.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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