ID RUVC_ACIC1 Reviewed; 178 AA. AC A0LUK7; DT 29-APR-2008, integrated into UniProtKB/Swiss-Prot. DT 12-DEC-2006, sequence version 1. DT 27-MAR-2024, entry version 87. 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=Acel_1345; OS Acidothermus cellulolyticus (strain ATCC 43068 / DSM 8971 / 11B). OC Bacteria; Actinomycetota; Actinomycetes; Acidothermales; Acidothermaceae; OC Acidothermus. OX NCBI_TaxID=351607; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC 43068 / DSM 8971 / 11B; RX PubMed=19270083; DOI=10.1101/gr.084848.108; RA Barabote R.D., Xie G., Leu D.H., Normand P., Necsulea A., Daubin V., RA Medigue C., Adney W.S., Xu X.C., Lapidus A., Parales R.E., Detter C., RA Pujic P., Bruce D., Lavire C., Challacombe J.F., Brettin T.S., Berry A.M.; RT "Complete genome of the cellulolytic thermophile Acidothermus RT cellulolyticus 11B provides insights into its ecophysiological and RT evolutionary adaptations."; RL Genome Res. 19:1033-1043(2009). 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; CP000481; ABK53117.1; -; Genomic_DNA. DR AlphaFoldDB; A0LUK7; -. DR SMR; A0LUK7; -. DR STRING; 351607.Acel_1345; -. DR KEGG; ace:Acel_1345; -. DR eggNOG; COG0817; Bacteria. DR HOGENOM; CLU_091257_0_2_11; -. DR InParanoid; A0LUK7; -. DR OrthoDB; 9805499at2; -. DR Proteomes; UP000008221; 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 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 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..178 FT /note="Crossover junction endodeoxyribonuclease RuvC" FT /id="PRO_0000332409" FT ACT_SITE 18 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 78 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT ACT_SITE 151 FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 18 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 78 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="2" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" FT BINDING 151 FT /ligand="Mg(2+)" FT /ligand_id="ChEBI:CHEBI:18420" FT /ligand_label="1" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00034" SQ SEQUENCE 178 AA; 18514 MW; 256C3FE5EF142CA1 CRC64; MAANLPNMRS IRRVMGVDPG LTRCGIGVVD GYPGLARLVG VDVLHTPADA ELGDRLAALE DGLVQWLDRA APDVVAVERV FSQHNVRTVM GTAQAGAVAL LVAARRGVPV VWHTPSEVKA AVTGQGRAGK DQVAFMVRRL LRAPGLAAPA DATDALALAI CQLWRGAAMA RLAAGGAR //