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RNH3_STRPG
ID   RNH3_STRPG              Reviewed;         300 AA.
AC   A2RCQ5;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-MAR-2007, sequence version 1.
DT   03-AUG-2022, entry version 81.
DE   RecName: Full=Ribonuclease HIII {ECO:0000255|HAMAP-Rule:MF_00053};
DE            Short=RNase HIII {ECO:0000255|HAMAP-Rule:MF_00053};
DE            EC=3.1.26.4 {ECO:0000255|HAMAP-Rule:MF_00053};
GN   Name=rnhC {ECO:0000255|HAMAP-Rule:MF_00053}; OrderedLocusNames=SpyM50286;
OS   Streptococcus pyogenes serotype M5 (strain Manfredo).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Streptococcus.
OX   NCBI_TaxID=160491;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Manfredo;
RX   PubMed=17012393; DOI=10.1128/jb.01227-06;
RA   Holden M.T.G., Scott A., Cherevach I., Chillingworth T., Churcher C.,
RA   Cronin A., Dowd L., Feltwell T., Hamlin N., Holroyd S., Jagels K.,
RA   Moule S., Mungall K., Quail M.A., Price C., Rabbinowitsch E., Sharp S.,
RA   Skelton J., Whitehead S., Barrell B.G., Kehoe M., Parkhill J.;
RT   "Complete genome of acute rheumatic fever-associated serotype M5
RT   Streptococcus pyogenes strain Manfredo.";
RL   J. Bacteriol. 189:1473-1477(2007).
CC   -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC       hybrids. {ECO:0000255|HAMAP-Rule:MF_00053}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00053};
CC   -!- COFACTOR:
CC       Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00053};
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00053};
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_00053};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00053}.
CC   -!- SIMILARITY: Belongs to the RNase HII family. RnhC subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_00053}.
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DR   EMBL; AM295007; CAM29628.1; -; Genomic_DNA.
DR   RefSeq; WP_011888614.1; NC_009332.1.
DR   AlphaFoldDB; A2RCQ5; -.
DR   SMR; A2RCQ5; -.
DR   KEGG; spf:SpyM50286; -.
DR   HOGENOM; CLU_059546_1_0_9; -.
DR   OMA; TGDYFGP; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000287; F:magnesium 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; cd14796; RNAse_HIII_N; 1.
DR   Gene3D; 3.30.310.10; -; 1.
DR   Gene3D; 3.30.420.10; -; 1.
DR   HAMAP; MF_00053; RNase_HIII; 1.
DR   InterPro; IPR001352; RNase_HII/HIII.
DR   InterPro; IPR024567; RNase_HII/HIII_dom.
DR   InterPro; IPR004641; RNase_HIII.
DR   InterPro; IPR024568; RNase_HIII_N.
DR   InterPro; IPR012337; RNaseH-like_sf.
DR   InterPro; IPR036397; RNaseH_sf.
DR   InterPro; IPR012295; TBP_dom_sf.
DR   PANTHER; PTHR10954; PTHR10954; 1.
DR   Pfam; PF11858; DUF3378; 1.
DR   Pfam; PF01351; RNase_HII; 1.
DR   PIRSF; PIRSF037748; RnhC; 1.
DR   SUPFAM; SSF53098; SSF53098; 1.
DR   TIGRFAMs; TIGR00716; rnhC; 1.
DR   PROSITE; PS51975; RNASE_H_2; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endonuclease; Hydrolase; Magnesium; Metal-binding; Nuclease.
FT   CHAIN           1..300
FT                   /note="Ribonuclease HIII"
FT                   /id="PRO_1000031247"
FT   DOMAIN          83..300
FT                   /note="RNase H type-2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT   BINDING         89
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00053"
FT   BINDING         90
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00053"
FT   BINDING         194
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00053"
SQ   SEQUENCE   300 AA;  32685 MW;  CF41D3019361EC1F CRC64;
     MNTLVLKIDT ILSKHLKKQL APYTISSQNT YVAFAAKKNG VTVLLYKSGK LVLQGNGANA
     LAQELNLPVA KTVFEASNNS QDIPIIGSDE VGNGSYFGGI AVVASFVDPK DHSFLKKLGV
     DDSKKLSDKT IQQIAPLLEK QIPHQSLLLS PKKYNELVGK SKPYNAISIK VALHNQAIFL
     LLQKGIQPKQ IVIDAFTSQS NYEKHLKKEK NHFPNPLTFQ EKAESHYLAV AVSSIIARNL
     FLDNLDQLGQ DLGYQLPSGA GSASDKVASQ LLAAYGMSSL EYSAKLHFAN THKAQALLTK
 
 
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