ID RUVC_PSYA2 Reviewed; 194 AA. AC Q4FTV0; DT 07-MAR-2006, integrated into UniProtKB/Swiss-Prot. DT 30-AUG-2005, sequence version 1. DT 27-MAR-2024, entry version 114. 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=Psyc_0699; OS Psychrobacter arcticus (strain DSM 17307 / VKM B-2377 / 273-4). OC Bacteria; Pseudomonadota; Gammaproteobacteria; Moraxellales; Moraxellaceae; OC Psychrobacter. OX NCBI_TaxID=259536; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=DSM 17307 / VKM B-2377 / 273-4; RX PubMed=20154119; DOI=10.1128/aem.02101-09; RA Ayala-del-Rio H.L., Chain P.S., Grzymski J.J., Ponder M.A., Ivanova N., RA Bergholz P.W., Di Bartolo G., Hauser L., Land M., Bakermans C., RA Rodrigues D., Klappenbach J., Zarka D., Larimer F., Richardson P., RA Murray A., Thomashow M., Tiedje J.M.; RT "The genome sequence of Psychrobacter arcticus 273-4, a psychroactive RT Siberian permafrost bacterium, reveals mechanisms for adaptation to low- RT temperature growth."; RL Appl. Environ. Microbiol. 76:2304-2312(2010). 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; CP000082; AAZ18558.1; -; Genomic_DNA. DR RefSeq; WP_011279985.1; NC_007204.1. DR AlphaFoldDB; Q4FTV0; -. DR SMR; Q4FTV0; -. DR STRING; 259536.Psyc_0699; -. DR KEGG; par:Psyc_0699; -. DR eggNOG; COG0817; Bacteria. DR HOGENOM; CLU_091257_2_1_6; -. DR OrthoDB; 9805499at2; -. DR Proteomes; UP000000546; 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..194 FT /note="Crossover junction endodeoxyribonuclease RuvC" FT /id="PRO_0000225168" FT ACT_SITE 8 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 72 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 144 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 72 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 144 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" SQ SEQUENCE 194 AA; 21324 MW; 816D5B88C72E3812 CRC64; MAIIIGIDPG SRMTGYGILQ QTGDKLTYID SGTIRTDTKE MPERLKRIFN GLTRITQHHL KYADEPIYTA IEQVFMAENP DSALKLGQAR GAAIAAMVAL DLEVSEYTAR QIKQAVCGYG AAAKEQVQDM VCRILTLDFV PQQDAADGLA CAICHAHSSH SMNKLILNSA MRGRGASKKK GRWRLTEEDL GNLR //