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RNH3_LACLS
ID   RNH3_LACLS              Reviewed;         292 AA.
AC   Q02VL7;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   14-NOV-2006, 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=LACR_2587;
OS   Lactococcus lactis subsp. cremoris (strain SK11).
OC   Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC   Lactococcus; Lactococcus cremoris subsp. cremoris.
OX   NCBI_TaxID=272622;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SK11;
RX   PubMed=17030793; DOI=10.1073/pnas.0607117103;
RA   Makarova K.S., Slesarev A., Wolf Y.I., Sorokin A., Mirkin B., Koonin E.V.,
RA   Pavlov A., Pavlova N., Karamychev V., Polouchine N., Shakhova V.,
RA   Grigoriev I., Lou Y., Rohksar D., Lucas S., Huang K., Goodstein D.M.,
RA   Hawkins T., Plengvidhya V., Welker D., Hughes J., Goh Y., Benson A.,
RA   Baldwin K., Lee J.-H., Diaz-Muniz I., Dosti B., Smeianov V., Wechter W.,
RA   Barabote R., Lorca G., Altermann E., Barrangou R., Ganesan B., Xie Y.,
RA   Rawsthorne H., Tamir D., Parker C., Breidt F., Broadbent J.R., Hutkins R.,
RA   O'Sullivan D., Steele J., Unlu G., Saier M.H. Jr., Klaenhammer T.,
RA   Richardson P., Kozyavkin S., Weimer B.C., Mills D.A.;
RT   "Comparative genomics of the lactic acid bacteria.";
RL   Proc. Natl. Acad. Sci. U.S.A. 103:15611-15616(2006).
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; CP000425; ABJ74005.1; -; Genomic_DNA.
DR   RefSeq; WP_011677311.1; NC_008527.1.
DR   AlphaFoldDB; Q02VL7; -.
DR   SMR; Q02VL7; -.
DR   EnsemblBacteria; ABJ74005; ABJ74005; LACR_2587.
DR   KEGG; llc:LACR_2587; -.
DR   HOGENOM; CLU_059546_1_0_9; -.
DR   OMA; TGDYFGP; -.
DR   Proteomes; UP000000240; Chromosome.
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..292
FT                   /note="Ribonuclease HIII"
FT                   /id="PRO_1000031232"
FT   DOMAIN          76..292
FT                   /note="RNase H type-2"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01319"
FT   BINDING         82
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00053"
FT   BINDING         83
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00053"
FT   BINDING         186
FT                   /ligand="a divalent metal cation"
FT                   /ligand_id="ChEBI:CHEBI:60240"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00053"
SQ   SEQUENCE   292 AA;  32096 MW;  247095AD2E7A572C CRC64;
     MNIVLKLSSN ACQQLSEKYK SYEQTSKNPY IRFFAKVGKT SISVYTSGKV VFQGSDAEKI
     ASEFGHVAQV VPKKQTNLIG TDEVGNGSYF GGLMVTASFV SDNHLKFLKE MGVADSKKLT
     DEKICQIAPK LIEEIPHVAL VVEPEKYNEV IASGYNAVSI KVALHNQAIY LLEKQLGSQP
     ESIVIDAFTT EANYKKYVSA EKNHPLTNVT LLTKAEDQFL AVAVSSIISR YKFLENLKKL
     SKESSFTLPS GAENLSDKVA AQIIKSQGID ALNHLAKLHF ANTQKAMKIA QL
 
 
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