ID RUVC_ACIBC Reviewed; 181 AA. AC B2HYY2; DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot. DT 10-JUN-2008, sequence version 1. DT 02-SEP-2026, entry version 89. 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=ACICU_01557; OS Acinetobacter baumannii (strain ACICU). OC Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria; OC Moraxellales; Moraxellaceae; Acinetobacter; OC Acinetobacter calcoaceticus/baumannii complex. OX NCBI_TaxID=405416; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ACICU; RX PubMed=18411315; DOI=10.1128/aac.01643-07; RA Iacono M., Villa L., Fortini D., Bordoni R., Imperi F., Bonnal R.J., RA Sicheritz-Ponten T., De Bellis G., Visca P., Cassone A., Carattoli A.; RT "Whole-genome pyrosequencing of an epidemic multidrug-resistant RT Acinetobacter baumannii strain belonging to the European clone II group."; RL Antimicrob. Agents Chemother. 52:2616-2625(2008). 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; CP000863; ACC56869.1; -; Genomic_DNA. DR RefSeq; WP_001128330.1; NC_010611.1. DR AlphaFoldDB; B2HYY2; -. DR SMR; B2HYY2; -. DR GeneID; 92893740; -. DR KEGG; abc:ACICU_01557; -. DR HOGENOM; CLU_091257_2_1_6; -. 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:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule. DR GO; GO:0003676; F:nucleic acid binding; IEA:InterPro. 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 FunFam; 3.30.420.10:FF:000002; Crossover junction endodeoxyribonuclease 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..181 FT /note="Crossover junction endodeoxyribonuclease RuvC" FT /id="PRO_1000090494" FT ACT_SITE 8 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 67 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 139 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 67 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 139 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" SQ SEQUENCE 181 AA; 19446 MW; D883A6712368DD7B CRC64; MPLIIGIDPG SRLTGYGIIE KDGSKLRFVD AGTIRTETQE MPERLKRIFA GVERIVKFHG PTEAAVEQVF MAQNPDSALK LGQARGAAIA ALVNLDLQVA EYTARQIKQS VVGYGAADKE QVQMMVMRLL NLTIKPQADA ADALAAAICH AHASGSMSKL TVLNALGGMA RGRSRSSSRR R //