Crossover junction endodeoxyribonuclease RuvC

UniProtKB accession:  Q9RX75

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UniProtKB description:  The RuvA-RuvB-RuvC complex processes Holliday junction (HJ) DNA during genetic recombination and DNA repair (PubMed:36000732). Endonuclease that resolves HJ intermediates (PubMed:35744678, PubMed:36000732). Cleaves cruciform DNA by making single-stranded nicks across the HJ at symmetrical positions within the homologous arms, probably yielding a 5'-phosphate and a 3'-hydroxyl group; requires a central core of homology in the junction (PubMed:35744678, PubMed:36000732). The consensus cleavage sequence is 5'-(G/C)TC(C/G)-3' (a different site than E.coli); cleavage occurs on the 3'-side of the TC dinucleotide at the point of strand exchange (PubMed:36000732). Also resolves nicked HJ intermediates, replication forks and Y-junction DNA in vitro (PubMed:36000732). HJ branch migration catalyzed by RuvA-RuvB allows RuvC to scan DNA until it finds its consensus sequence, where it cleaves and resolves the cruciform DNA (By similarity).