ID RUVC_METFK Reviewed; 180 AA. AC Q1GYR6; DT 29-APR-2008, integrated into UniProtKB/Swiss-Prot. DT 27-JUN-2006, sequence version 1. DT 27-MAR-2024, entry version 96. DE RecName: Full=Crossover junction endodeoxyribonuclease RuvC {ECO:0000255|HAMAP-Rule:MF_00034}; DE EC=3.1.21.10 {ECO:0000255|HAMAP-Rule:MF_00034}; DE AltName: Full=Holliday junction nuclease RuvC {ECO:0000255|HAMAP-Rule:MF_00034}; DE AltName: Full=Holliday junction resolvase RuvC {ECO:0000255|HAMAP-Rule:MF_00034}; GN Name=ruvC {ECO:0000255|HAMAP-Rule:MF_00034}; GN OrderedLocusNames=Mfla_2354; OS Methylobacillus flagellatus (strain KT / ATCC 51484 / DSM 6875). OC Bacteria; Pseudomonadota; Betaproteobacteria; Nitrosomonadales; OC Methylophilaceae; Methylobacillus. OX NCBI_TaxID=265072; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=KT / ATCC 51484 / DSM 6875; RG US DOE Joint Genome Institute; RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., RA Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S., RA Brettin T., Bruce D., Han C., Tapia R., Saunders E., Gilna P., Schmutz J., RA Larimer F., Land M., Kyrpides N., Anderson I., Richardson P.; RT "Complete sequence of Methylobacillus flagellatus KT."; RL Submitted (MAR-2006) to the EMBL/GenBank/DDBJ databases. CC -!- FUNCTION: The RuvA-RuvB-RuvC complex processes Holliday junction (HJ) CC DNA during genetic recombination and DNA repair. Endonuclease that CC resolves HJ intermediates. Cleaves cruciform DNA by making single- CC stranded nicks across the HJ at symmetrical positions within the CC homologous arms, yielding a 5'-phosphate and a 3'-hydroxyl group; CC requires a central core of homology in the junction. The consensus CC cleavage sequence is 5'-(A/T)TT(C/G)-3'. Cleavage occurs on the 3'-side CC of the TT dinucleotide at the point of strand exchange. HJ branch CC migration catalyzed by RuvA-RuvB allows RuvC to scan DNA until it finds CC its consensus sequence, where it cleaves and resolves the cruciform CC DNA. {ECO:0000255|HAMAP-Rule:MF_00034}. CC -!- CATALYTIC ACTIVITY: CC Reaction=Endonucleolytic cleavage at a junction such as a reciprocal CC single-stranded crossover between two homologous DNA duplexes CC (Holliday junction).; EC=3.1.21.10; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00034}; CC -!- COFACTOR: CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00034}; CC Note=Binds 2 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00034}; CC -!- SUBUNIT: Homodimer which binds Holliday junction (HJ) DNA. The HJ CC becomes 2-fold symmetrical on binding to RuvC with unstacked arms; it CC has a different conformation from HJ DNA in complex with RuvA. In the CC full resolvosome a probable DNA-RuvA(4)-RuvB(12)-RuvC(2) complex forms CC which resolves the HJ. {ECO:0000255|HAMAP-Rule:MF_00034}. CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00034}. CC -!- SIMILARITY: Belongs to the RuvC family. {ECO:0000255|HAMAP- CC Rule:MF_00034}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; CP000284; ABE50621.1; -; Genomic_DNA. DR RefSeq; WP_011480574.1; NC_007947.1. DR AlphaFoldDB; Q1GYR6; -. DR SMR; Q1GYR6; -. DR STRING; 265072.Mfla_2354; -. DR KEGG; mfa:Mfla_2354; -. DR eggNOG; COG0817; Bacteria. DR HOGENOM; CLU_091257_2_0_4; -. DR OrthoDB; 9805499at2; -. DR Proteomes; UP000002440; Chromosome. DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell. DR GO; GO:0048476; C:Holliday junction resolvase complex; IEA:UniProtKB-UniRule. DR GO; GO:0008821; F:crossover junction DNA endonuclease activity; IEA:UniProtKB-UniRule. DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW. DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0006310; P:DNA recombination; IEA:UniProtKB-UniRule. DR GO; GO:0006281; P:DNA repair; IEA:UniProtKB-UniRule. DR CDD; cd16962; RuvC; 1. DR Gene3D; 3.30.420.10; Ribonuclease H-like superfamily/Ribonuclease H; 1. DR HAMAP; MF_00034; RuvC; 1. DR InterPro; IPR012337; RNaseH-like_sf. DR InterPro; IPR036397; RNaseH_sf. DR InterPro; IPR020563; X-over_junc_endoDNase_Mg_BS. DR InterPro; IPR002176; X-over_junc_endoDNase_RuvC. DR NCBIfam; TIGR00228; ruvC; 1. DR PANTHER; PTHR30194; CROSSOVER JUNCTION ENDODEOXYRIBONUCLEASE RUVC; 1. DR PANTHER; PTHR30194:SF3; CROSSOVER JUNCTION ENDODEOXYRIBONUCLEASE RUVC; 1. DR Pfam; PF02075; RuvC; 1. DR PRINTS; PR00696; RSOLVASERUVC. DR SUPFAM; SSF53098; Ribonuclease H-like; 1. DR PROSITE; PS01321; RUVC; 1. PE 3: Inferred from homology; KW Cytoplasm; DNA damage; DNA recombination; DNA repair; DNA-binding; KW Endonuclease; Hydrolase; Magnesium; Metal-binding; Nuclease; KW Reference proteome. FT CHAIN 1..180 FT /note="Crossover junction endodeoxyribonuclease RuvC" FT /id="PRO_0000332427" FT ACT_SITE 9 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 74 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 146 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 9 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 74 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 146 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" SQ SEQUENCE 180 AA; 18958 MW; 76041F822A09BC67 CRC64; MTFRILGIDP GLRLTGFGVI EKTGEKLAYV ASGTIKTTTG KGSEIEDLPT RLKIILDSLA EVIDNYQPQQ AAIEKVFVNV NPQSTLLLGQ ARGAAISALV LQGLPIAEYT ALQVKQSVVG HGHAAKDQVQ EMVKRLLNLP GLPRPDSADA LACAICHAHG GQGLGKLATA GFRVKGGRLI //