Immunity protein CdiI

UniProtKB accession:  Q0T964

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UniProtKB description:  Immunity protein component of a toxin-immunity protein module, which functions as a cellular contact-dependent growth inhibition (CDI) system. CDI modules allow bacteria to communicate with and inhibit the growth of closely related neighboring bacteria in a contact-dependent fashion. Protects cells against the tRNA nuclease activity of CdiA, its cognate toxin protein, but not against CdiA from E.coli strain EC93 or D.dadantii strain 3937. Binding to CdiA-CT in the CdiA-CysK complex probably blocks the tRNA-binding site of CdiA-CT (PubMed:27531961).