ID   RNH2_BACFR              Reviewed;         201 AA.
AC   Q64ZN7;
DT   16-MAY-2006, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2004, sequence version 1.
DT   03-AUG-2022, entry version 86.
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=BF0290;
OS   Bacteroides fragilis (strain YCH46).
OC   Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Bacteroidaceae;
OC   Bacteroides.
OX   NCBI_TaxID=295405;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=YCH46;
RX   PubMed=15466707; DOI=10.1073/pnas.0404172101;
RA   Kuwahara T., Yamashita A., Hirakawa H., Nakayama H., Toh H., Okada N.,
RA   Kuhara S., Hattori M., Hayashi T., Ohnishi Y.;
RT   "Genomic analysis of Bacteroides fragilis reveals extensive DNA inversions
RT   regulating cell surface adaptation.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:14919-14924(2004).
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; AP006841; BAD47039.1; -; Genomic_DNA.
DR   RefSeq; WP_005796757.1; NZ_UYXF01000014.1.
DR   RefSeq; YP_097573.1; NC_006347.1.
DR   AlphaFoldDB; Q64ZN7; -.
DR   SMR; Q64ZN7; -.
DR   STRING; 295405.BF0290; -.
DR   EnsemblBacteria; BAD47039; BAD47039; BF0290.
DR   KEGG; bfr:BF0290; -.
DR   PATRIC; fig|295405.11.peg.314; -.
DR   HOGENOM; CLU_036532_3_1_10; -.
DR   OMA; YPTKLHL; -.
DR   Proteomes; UP000002197; 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..201
FT                   /note="Ribonuclease HII"
FT                   /id="PRO_0000235697"
FT   DOMAIN          10..200
FT                   /note="RNase H type-2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT   BINDING         16
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         17
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         108
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
SQ   SEQUENCE   201 AA;  22780 MW;  2DB201D0A8EFD058 CRC64;
     MLLPWLNEEL IEAGCDEAGR GCLAGAVYAA AVILPKDFEN ELLNDSKQLS EKQRYALREV
     IERDAVAWAV GIVSPEEIDK INILNASFLA MHRAVDRLKT RPQHLLIDGN RFKKYPDIPH
     TTVIKGDGKY LSIAAASILA KTYRDDYMNR LHQEFPCYDW EHNKGYPTKK HRAAIAGHGT
     TPYHRMTFNL LGDGQLELFS K