ID   RNH2_BORBZ              Reviewed;         181 AA.
AC   B7J0Y4;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 62.
DE   RecName: Full=Ribonuclease HII {ECO:0000255|HAMAP-Rule:MF_00052};
DE            Short=RNase HII {ECO:0000255|HAMAP-Rule:MF_00052};
DE            EC=3.1.26.4 {ECO:0000255|HAMAP-Rule:MF_00052};
GN   Name=rnhB {ECO:0000255|HAMAP-Rule:MF_00052}; OrderedLocusNames=BbuZS7_0045;
OS   Borreliella burgdorferi (strain ZS7) (Borrelia burgdorferi).
OC   Bacteria; Spirochaetes; Spirochaetales; Borreliaceae; Borreliella.
OX   NCBI_TaxID=445985;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ZS7;
RX   PubMed=20935092; DOI=10.1128/jb.01158-10;
RA   Schutzer S.E., Fraser-Liggett C.M., Casjens S.R., Qiu W.G., Dunn J.J.,
RA   Mongodin E.F., Luft B.J.;
RT   "Whole-genome sequences of thirteen isolates of Borrelia burgdorferi.";
RL   J. Bacteriol. 193:1018-1020(2011).
CC   -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC       hybrids. {ECO:0000255|HAMAP-Rule:MF_00052}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00052};
CC   -!- COFACTOR:
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00052};
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00052};
CC       Note=Manganese or magnesium. Binds 1 divalent metal ion per monomer in
CC       the absence of substrate. May bind a second metal ion after substrate
CC       binding. {ECO:0000255|HAMAP-Rule:MF_00052};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00052}.
CC   -!- SIMILARITY: Belongs to the RNase HII family. {ECO:0000255|HAMAP-
CC       Rule:MF_00052}.
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DR   EMBL; CP001205; ACK74606.1; -; Genomic_DNA.
DR   RefSeq; WP_002658328.1; NC_011728.1.
DR   AlphaFoldDB; B7J0Y4; -.
DR   SMR; B7J0Y4; -.
DR   EnsemblBacteria; ACK74606; ACK74606; BbuZS7_0045.
DR   GeneID; 56568170; -.
DR   KEGG; bbz:BbuZS7_0045; -.
DR   HOGENOM; CLU_036532_3_1_12; -.
DR   OMA; YPTKLHL; -.
DR   OrthoDB; 1685277at2; -.
DR   Proteomes; UP000006901; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003723; F:RNA 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; cd07182; RNase_HII_bacteria_HII_like; 1.
DR   Gene3D; 3.30.420.10; -; 1.
DR   HAMAP; MF_00052_B; RNase_HII_B; 1.
DR   InterPro; IPR022898; RNase_HII.
DR   InterPro; IPR001352; RNase_HII/HIII.
DR   InterPro; IPR024567; RNase_HII/HIII_dom.
DR   InterPro; IPR012337; RNaseH-like_sf.
DR   InterPro; IPR036397; RNaseH_sf.
DR   PANTHER; PTHR10954; PTHR10954; 1.
DR   PANTHER; PTHR10954:SF18; PTHR10954:SF18; 1.
DR   Pfam; PF01351; RNase_HII; 1.
DR   SUPFAM; SSF53098; SSF53098; 1.
DR   PROSITE; PS51975; RNASE_H_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endonuclease; Hydrolase; Manganese; Metal-binding; Nuclease.
FT   CHAIN           1..181
FT                   /note="Ribonuclease HII"
FT                   /id="PRO_1000116842"
FT   DOMAIN          1..181
FT                   /note="RNase H type-2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT   BINDING         6
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         7
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         98
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
SQ   SEQUENCE   181 AA;  20525 MW;  86128C865BA3B60A CRC64;
     MICGIDEVGR GCIFGPILSA AVVFKKKPSF IKELDDSKKL KKEKREYLSS LILKNSYYAF
     AEISNITIEK INIHNASLLA MQTAYENLKL NCSLVLVDGK FVPKITAKNV KAIIKGDSII
     DEIKAASIIA KVKRDKLMDE YDKIYPLYLL KKNKGYPTKE HKNAIKKYGV LSLHRKNFKL
     I