ID   RNH_BART1               Reviewed;         155 AA.
AC   A9IQR5;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   03-AUG-2022, entry version 72.
DE   RecName: Full=Ribonuclease H {ECO:0000255|HAMAP-Rule:MF_00042};
DE            Short=RNase H {ECO:0000255|HAMAP-Rule:MF_00042};
DE            EC=3.1.26.4 {ECO:0000255|HAMAP-Rule:MF_00042};
GN   Name=rnhA {ECO:0000255|HAMAP-Rule:MF_00042}; OrderedLocusNames=BT_0657;
OS   Bartonella tribocorum (strain CIP 105476 / IBS 506).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Bartonellaceae; Bartonella.
OX   NCBI_TaxID=382640;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CIP 105476 / IBS 506;
RX   PubMed=18037886; DOI=10.1038/ng.2007.38;
RA   Saenz H.L., Engel P., Stoeckli M.C., Lanz C., Raddatz G.,
RA   Vayssier-Taussat M., Birtles R., Schuster S.C., Dehio C.;
RT   "Genomic analysis of Bartonella identifies type IV secretion systems as
RT   host adaptability factors.";
RL   Nat. Genet. 39:1469-1476(2007).
CC   -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC       hybrids. {ECO:0000255|HAMAP-Rule:MF_00042}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00042};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00042};
CC       Note=Binds 1 Mg(2+) ion per subunit. May bind a second metal ion at a
CC       regulatory site, or after substrate binding. {ECO:0000255|HAMAP-
CC       Rule:MF_00042};
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_00042}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00042}.
CC   -!- SIMILARITY: Belongs to the RNase H family. {ECO:0000255|HAMAP-
CC       Rule:MF_00042}.
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DR   EMBL; AM260525; CAK01091.1; -; Genomic_DNA.
DR   RefSeq; WP_012231196.1; NC_010161.1.
DR   AlphaFoldDB; A9IQR5; -.
DR   SMR; A9IQR5; -.
DR   STRING; 382640.BT_0657; -.
DR   EnsemblBacteria; CAK01091; CAK01091; BT_0657.
DR   KEGG; btr:BT_0657; -.
DR   eggNOG; COG0328; Bacteria.
DR   HOGENOM; CLU_030894_6_0_5; -.
DR   OMA; MQEIEIF; -.
DR   OrthoDB; 1953872at2; -.
DR   Proteomes; UP000001592; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR   GO; GO:0004523; F:RNA-DNA hybrid ribonuclease activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0006401; P:RNA catabolic process; IEA:UniProtKB-UniRule.
DR   CDD; cd09278; RNase_HI_prokaryote_like; 1.
DR   Gene3D; 3.30.420.10; -; 1.
DR   HAMAP; MF_00042; RNase_H; 1.
DR   InterPro; IPR012337; RNaseH-like_sf.
DR   InterPro; IPR002156; RNaseH_domain.
DR   InterPro; IPR036397; RNaseH_sf.
DR   InterPro; IPR022892; RNaseHI.
DR   Pfam; PF00075; RNase_H; 1.
DR   SUPFAM; SSF53098; SSF53098; 1.
DR   PROSITE; PS50879; RNASE_H_1; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endonuclease; Hydrolase; Magnesium; Metal-binding; Nuclease.
FT   CHAIN           1..155
FT                   /note="Ribonuclease H"
FT                   /id="PRO_0000332563"
FT   DOMAIN          4..145
FT                   /note="RNase H type-1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00408"
FT   BINDING         13
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT   BINDING         13
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT   BINDING         51
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT   BINDING         73
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
FT   BINDING         137
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00042"
SQ   SEQUENCE   155 AA;  17426 MW;  4DE751F441E20079 CRC64;
     MASQQKVVEI YTDGACSGNP GVGGWGAILR WNGHERELYG GNAHTTNNQM ELMAAICALK
     ALKEPCLVDL YTDSVYVRNG ISKWIEGWKK NNWRTASKSP VKNMELWQTL EDACSCHAVR
     WHWVKGHAGH PENERADALA RKAIAQYREN GRFPT