23S rRNA-specific endonuclease VapC20
UniProtKB accession: P0DMV7
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Go to UniProtKB: P0DMV7
UniProtKB description: Toxic component of a type II toxin-antitoxin (TA) system. An endoribonuclease that cleaves 23S rRNA in the sarcin-ricin loop (SRL). The SRL sequence is highly conserved and is implicated in GTP hydrolysis by EF-Tu and EF-G. Acts on purified ribosomes but not on isolated RNA. Its toxic effect is neutralized by coexpression with cognate antitoxin VapB20.
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