ID   RNH2_MYCBP              Reviewed;         264 AA.
AC   A1KMP6;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   10-JUN-2026, entry version 95.
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};
GN   OrderedLocusNames=BCG_2923c;
OS   Mycobacterium bovis (strain BCG / Pasteur 1173P2).
OC   Bacteria; Bacillati; Actinomycetota; Actinomycetes; Mycobacteriales;
OC   Mycobacteriaceae; Mycobacterium; Mycobacterium tuberculosis complex.
OX   NCBI_TaxID=410289;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=BCG / Pasteur 1173P2;
RX   PubMed=17372194; DOI=10.1073/pnas.0700869104;
RA   Brosch R., Gordon S.V., Garnier T., Eiglmeier K., Frigui W., Valenti P.,
RA   Dos Santos S., Duthoy S., Lacroix C., Garcia-Pelayo C., Inwald J.K.,
RA   Golby P., Garcia J.N., Hewinson R.G., Behr M.A., Quail M.A., Churcher C.,
RA   Barrell B.G., Parkhill J., Cole S.T.;
RT   "Genome plasticity of BCG and impact on vaccine efficacy.";
RL   Proc. Natl. Acad. Sci. U.S.A. 104:5596-5601(2007).
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; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00052};
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000255|HAMAP-
CC         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}.
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; AM408590; CAL72912.1; -; Genomic_DNA.
DR   RefSeq; WP_003414713.1; NC_008769.1.
DR   AlphaFoldDB; A1KMP6; -.
DR   SMR; A1KMP6; -.
DR   GeneID; 45426889; -.
DR   KEGG; mbb:BCG_2923c; -.
DR   HOGENOM; CLU_036532_1_0_11; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0032299; C:ribonuclease H2 complex; IEA:TreeGrafter.
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:0043137; P:DNA replication, removal of RNA primer; IEA:TreeGrafter.
DR   GO; GO:0006298; P:mismatch repair; IEA:TreeGrafter.
DR   CDD; cd07182; RNase_HII_bacteria_HII_like; 1.
DR   FunFam; 3.30.420.10:FF:000113; Ribonuclease HII; 1.
DR   Gene3D; 3.30.420.10; Ribonuclease H-like superfamily/Ribonuclease H; 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   NCBIfam; NF000595; PRK00015.1-3; 1.
DR   NCBIfam; NF000598; PRK00015.2-2; 1.
DR   NCBIfam; NF000600; PRK00015.2-4; 1.
DR   PANTHER; PTHR10954; RIBONUCLEASE H2 SUBUNIT A; 1.
DR   PANTHER; PTHR10954:SF18; RIBONUCLEASE HII; 1.
DR   Pfam; PF01351; RNase_HII; 1.
DR   SUPFAM; SSF53098; Ribonuclease H-like; 1.
DR   PROSITE; PS51975; RNASE_H_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endonuclease; Hydrolase; Manganese; Metal-binding; Nuclease.
FT   CHAIN           1..264
FT                   /note="Ribonuclease HII"
FT                   /id="PRO_1000031163"
FT   DOMAIN          33..224
FT                   /note="RNase H type-2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT   REGION          222..264
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         39
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         40
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         133
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
SQ   SEQUENCE   264 AA;  27646 MW;  786F0E790188279F CRC64;
     MTKTWPPRTV IRKSGGLRGM RTLESALHRG GLGPVAGVDE VGRGACAGPL VVAACVLGPG
     RIASLAALDD SKKLSEQARE KLFPLICRYA VAYHVVFIPS AEVDRRGVHV ANIEGMRRAV
     AGLAVRPGYV LSDGFRVPGL PMPSLPVIGG DAAAACIAAA SVLAKVSRDR VMVALDADHP
     GYGFAEHKGY STPAHSRALA RLGPCPQHRY SFINVRRVAS GSNTAEVADG QPDPRDGTAQ
     TGEGRWSKSS HPATMRATGR AQGT
//