ID RUVC_COLP3 Reviewed; 175 AA. AC Q483C6; DT 07-MAR-2006, integrated into UniProtKB/Swiss-Prot. DT 13-SEP-2005, sequence version 1. DT 27-MAR-2024, entry version 106. 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=CPS_2115; OS Colwellia psychrerythraea (strain 34H / ATCC BAA-681) (Vibrio OS psychroerythus). OC Bacteria; Pseudomonadota; Gammaproteobacteria; Alteromonadales; OC Colwelliaceae; Colwellia. OX NCBI_TaxID=167879; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=34H / ATCC BAA-681; RX PubMed=16043709; DOI=10.1073/pnas.0504766102; RA Methe B.A., Nelson K.E., Deming J.W., Momen B., Melamud E., Zhang X., RA Moult J., Madupu R., Nelson W.C., Dodson R.J., Brinkac L.M., RA Daugherty S.C., Durkin A.S., DeBoy R.T., Kolonay J.F., Sullivan S.A., RA Zhou L., Davidsen T.M., Wu M., Huston A.L., Lewis M., Weaver B., RA Weidman J.F., Khouri H., Utterback T.R., Feldblyum T.V., Fraser C.M.; RT "The psychrophilic lifestyle as revealed by the genome sequence of RT Colwellia psychrerythraea 34H through genomic and proteomic analyses."; RL Proc. Natl. Acad. Sci. U.S.A. 102:10913-10918(2005). 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; CP000083; AAZ23978.1; -; Genomic_DNA. DR RefSeq; WP_011042935.1; NC_003910.7. DR AlphaFoldDB; Q483C6; -. DR SMR; Q483C6; -. DR STRING; 167879.CPS_2115; -. DR KEGG; cps:CPS_2115; -. DR eggNOG; COG0817; Bacteria. DR HOGENOM; CLU_091257_3_1_6; -. DR Proteomes; UP000000547; 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. FT CHAIN 1..175 FT /note="Crossover junction endodeoxyribonuclease RuvC" FT /id="PRO_0000225133" FT ACT_SITE 8 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 69 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 141 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 8 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 69 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 141 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" SQ SEQUENCE 175 AA; 18334 MW; 1C1C818584CBDA51 CRC64; MTIILGIDPG SRFTGYGVIK QEKQRFTYLG SGCIKAMSQG EDLASRLQTI FAGVSELIIQ FKPDMFAIEQ VFMGVNPGGA LKLGQARGAA IVAATNSGLT IAEYSARQIK QAVVGTGAAD KNQVQHMVKS ILKLPGTPQA DAADALAVAL CHGHSHTSAA ILAGQATKIV RGRLR //