CRISPR system CMR subunit Cmr7 1

UniProtKB accession:  Q97WX5

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UniProtKB description:  CRISPR (clustered regularly interspaced short palindromic repeat) is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain spacers, sequences complementary to antecedent mobile elements, and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA) (By similarity). The CMR complex degrades RNA complementary to the crRNA (target RNA) within UA dinucleotides, generating 3'-OH and 5'-phosphate ends. Activity is dependent on the 8 nt long 5' tag in the crRNA, an unpaired 3' flag on the target RNA, and is stimulated by ATP. Some cleavage of the guide crRNA can also be observed.