ID   RNH2_NOCSJ              Reviewed;         240 AA.
AC   A1SLS0;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 80.
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=Noca_3253;
OS   Nocardioides sp. (strain ATCC BAA-499 / JS614).
OC   Bacteria; Actinobacteria; Propionibacteriales; Nocardioidaceae;
OC   Nocardioides.
OX   NCBI_TaxID=196162;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-499 / JS614;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA   Thompson L.S., Brettin T., Bruce D., Han C., Tapia R., Schmutz J.,
RA   Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Mattes T., Gossett J.,
RA   Richardson P.;
RT   "Complete sequence of chromosome 1 of Nocardioides sp. JS614.";
RL   Submitted (DEC-2006) to the EMBL/GenBank/DDBJ databases.
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; CP000509; ABL82755.1; -; Genomic_DNA.
DR   RefSeq; WP_011756689.1; NC_008699.1.
DR   AlphaFoldDB; A1SLS0; -.
DR   SMR; A1SLS0; -.
DR   STRING; 196162.Noca_3253; -.
DR   PRIDE; A1SLS0; -.
DR   EnsemblBacteria; ABL82755; ABL82755; Noca_3253.
DR   KEGG; nca:Noca_3253; -.
DR   eggNOG; COG0164; Bacteria.
DR   HOGENOM; CLU_036532_1_0_11; -.
DR   OMA; YPTKLHL; -.
DR   OrthoDB; 1685277at2; -.
DR   Proteomes; UP000000640; 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;
KW   Reference proteome.
FT   CHAIN           1..240
FT                   /note="Ribonuclease HII"
FT                   /id="PRO_0000334928"
FT   DOMAIN          29..220
FT                   /note="RNase H type-2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT   BINDING         35
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         36
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
FT   BINDING         129
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00052"
SQ   SEQUENCE   240 AA;  25743 MW;  EDBEF506C3F7AD87 CRC64;
     MSELPRGSTI RKDAGLYGYE RALRRHGIEP IAGVDEAGRG ACAGPLVAGA AILPPGKAGI
     VPGLADSKLL TERARERCYE QIVRRAVSWS VVVVSHEECD RLGMHVANVE ALRRAVALLD
     LPPAYVLTDG FPVDGLGVPG LAVWKGDRVA ACISAASVLA KVTRDRIMTE LDASWPAYDF
     KTHKGYITEV HSAALTAHGP SPIHRMRFVN VRRAAGLEPL DPVQNGEEAV ELVEVTEGTR