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Database: UniProt
Entry: RUVC_MAGSA
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ID   RUVC_MAGSA              Reviewed;         166 AA.
AC   Q2W2A2;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   10-JAN-2006, sequence version 1.
DT   27-MAR-2024, entry version 102.
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}; OrderedLocusNames=amb3219;
OS   Magnetospirillum magneticum (strain AMB-1 / ATCC 700264).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodospirillales;
OC   Magnetospirillaceae; Paramagnetospirillum.
OX   NCBI_TaxID=342108;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AMB-1 / ATCC 700264;
RX   PubMed=16303747; DOI=10.1093/dnares/dsi002;
RA   Matsunaga T., Okamura Y., Fukuda Y., Wahyudi A.T., Murase Y., Takeyama H.;
RT   "Complete genome sequence of the facultative anaerobic magnetotactic
RT   bacterium Magnetospirillum sp. strain AMB-1.";
RL   DNA Res. 12:157-166(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;
CC         Evidence={ECO:0000255|HAMAP-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}.
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DR   EMBL; AP007255; BAE52023.1; -; Genomic_DNA.
DR   RefSeq; WP_011385584.1; NC_007626.1.
DR   AlphaFoldDB; Q2W2A2; -.
DR   SMR; Q2W2A2; -.
DR   STRING; 342108.amb3219; -.
DR   KEGG; mag:amb3219; -.
DR   HOGENOM; CLU_091257_1_0_5; -.
DR   OrthoDB; 9805499at2; -.
DR   Proteomes; UP000007058; 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..166
FT                   /note="Crossover junction endodeoxyribonuclease RuvC"
FT                   /id="PRO_1000002773"
FT   ACT_SITE        7
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         7
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   166 AA;  17302 MW;  3D4ECC934C9D9013 CRC64;
     MRILGLDPGL RNTGWGIIDA VDNRLRHVAD GVIRPDASAA LAERLVQLHD GIMAVIADFS
     PDEAAVEETF VNMNPASTLK LGQARGVVLL VPAKSGLPVG EYAATLVKQS VVGTGRAAKE
     QVGMMVKTLL PGCLAATADA ADALAVAICH AHHRGTQQKL ARAVAR
//
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