ID   RNH_STRCO               Reviewed;         231 AA.
AC   Q9X7R6;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   30-MAY-2000, sequence version 2.
DT   03-AUG-2022, entry version 115.
DE   RecName: Full=Ribonuclease HI;
DE            Short=RNase HI;
DE            EC=3.1.26.4;
GN   Name=rnhA; OrderedLocusNames=SCO7284; ORFNames=SC5H1.08c;
OS   Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces; Streptomyces albidoflavus group.
OX   NCBI_TaxID=100226;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-471 / A3(2) / M145;
RX   PubMed=12000953; DOI=10.1038/417141a;
RA   Bentley S.D., Chater K.F., Cerdeno-Tarraga A.-M., Challis G.L.,
RA   Thomson N.R., James K.D., Harris D.E., Quail M.A., Kieser H., Harper D.,
RA   Bateman A., Brown S., Chandra G., Chen C.W., Collins M., Cronin A.,
RA   Fraser A., Goble A., Hidalgo J., Hornsby T., Howarth S., Huang C.-H.,
RA   Kieser T., Larke L., Murphy L.D., Oliver K., O'Neil S., Rabbinowitsch E.,
RA   Rajandream M.A., Rutherford K.M., Rutter S., Seeger K., Saunders D.,
RA   Sharp S., Squares R., Squares S., Taylor K., Warren T., Wietzorrek A.,
RA   Woodward J.R., Barrell B.G., Parkhill J., Hopwood D.A.;
RT   "Complete genome sequence of the model actinomycete Streptomyces coelicolor
RT   A3(2).";
RL   Nature 417:141-147(2002).
CC   -!- FUNCTION: Endonuclease that specifically degrades the RNA of RNA-DNA
CC       hybrids. {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=Endonucleolytic cleavage to 5'-phosphomonoester.; EC=3.1.26.4;
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420; Evidence={ECO:0000250};
CC       Note=Binds 1 Mg(2+) ion per subunit. May bind a second metal ion at a
CC       regulatory site, or after substrate binding. {ECO:0000250};
CC   -!- SUBUNIT: Monomer. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000305}.
CC   -!- SIMILARITY: Belongs to the RNase H family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=CAB42933.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AL939131; CAB42933.1; ALT_INIT; Genomic_DNA.
DR   PIR; T35324; T35324.
DR   RefSeq; NP_631340.1; NC_003888.3.
DR   AlphaFoldDB; Q9X7R6; -.
DR   SMR; Q9X7R6; -.
DR   STRING; 100226.SCO7284; -.
DR   GeneID; 1102722; -.
DR   KEGG; sco:SCO7284; -.
DR   PATRIC; fig|100226.15.peg.7386; -.
DR   eggNOG; COG0328; Bacteria.
DR   HOGENOM; CLU_030894_6_1_11; -.
DR   InParanoid; Q9X7R6; -.
DR   PhylomeDB; Q9X7R6; -.
DR   Proteomes; UP000001973; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0003676; F:nucleic acid binding; IEA:InterPro.
DR   GO; GO:0004523; F:RNA-DNA hybrid ribonuclease activity; IBA:GO_Central.
DR   GO; GO:0043137; P:DNA replication, removal of RNA primer; IBA:GO_Central.
DR   GO; GO:0090502; P:RNA phosphodiester bond hydrolysis, endonucleolytic; IBA:GO_Central.
DR   CDD; cd09278; RNase_HI_prokaryote_like; 1.
DR   Gene3D; 3.30.420.10; -; 1.
DR   HAMAP; MF_00042; RNase_H; 1.
DR   InterPro; IPR012337; RNaseH-like_sf.
DR   InterPro; IPR002156; RNaseH_domain.
DR   InterPro; IPR036397; RNaseH_sf.
DR   InterPro; IPR022892; RNaseHI.
DR   Pfam; PF00075; RNase_H; 1.
DR   SUPFAM; SSF53098; SSF53098; 1.
DR   PROSITE; PS50879; RNASE_H_1; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Endonuclease; Hydrolase; Magnesium; Metal-binding; Nuclease;
KW   Reference proteome.
FT   CHAIN           1..231
FT                   /note="Ribonuclease HI"
FT                   /id="PRO_0000195406"
FT   DOMAIN          1..146
FT                   /note="RNase H type-1"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00408"
FT   REGION          148..192
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          212..231
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   BINDING         10
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         10
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
FT   BINDING         50
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         72
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250"
FT   BINDING         138
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   231 AA;  24297 MW;  C650C6945CC1899A CRC64;
     MRERAVAACD GASKGNPGPA GWAWVVADAS ENPVRWEAGP LGKATNNIAE LTALERLLAS
     TDPDVPLEVR MDSQYAMKAV TTWLPGWKRN GWKTAAGKPV ANRELVVRID ELLDGRSVEF
     RYVPAHQVDG DRLNDFADRA ASQAAVVQEA AGSALGSPEP PPAPDVPAAR RAPRRGSSGA
     ARKGGGGSSA RTIKAKFPGR CLCGRPYAAG EPIAKNDQGW GHPECRTVAA G