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