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Database: UniProt/SWISS-PROT
Entry: KITH_ECOL6
LinkDB: KITH_ECOL6
Original site: KITH_ECOL6 
ID   KITH_ECOL6              Reviewed;         205 AA.
AC   Q8FHX4;
DT   01-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   23-MAY-2018, entry version 84.
DE   RecName: Full=Thymidine kinase {ECO:0000255|HAMAP-Rule:MF_00124};
DE            EC=2.7.1.21 {ECO:0000255|HAMAP-Rule:MF_00124};
GN   Name=tdk {ECO:0000255|HAMAP-Rule:MF_00124}; OrderedLocusNames=c1703;
OS   Escherichia coli O6:H1 (strain CFT073 / ATCC 700928 / UPEC).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=199310;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CFT073 / ATCC 700928 / UPEC;
RX   PubMed=12471157; DOI=10.1073/pnas.252529799;
RA   Welch R.A., Burland V., Plunkett G. III, Redford P., Roesch P.,
RA   Rasko D., Buckles E.L., Liou S.-R., Boutin A., Hackett J., Stroud D.,
RA   Mayhew G.F., Rose D.J., Zhou S., Schwartz D.C., Perna N.T.,
RA   Mobley H.L.T., Donnenberg M.S., Blattner F.R.;
RT   "Extensive mosaic structure revealed by the complete genome sequence
RT   of uropathogenic Escherichia coli.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:17020-17024(2002).
CC   -!- FUNCTION: Phosphorylates both thymidine and deoxyuridine.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY: ATP + thymidine = ADP + thymidine 5'-
CC       phosphate. {ECO:0000255|HAMAP-Rule:MF_00124}.
CC   -!- ENZYME REGULATION: Allosteric enzyme which is feedback inhibited
CC       by dTTP and activated by a number of dNDP and dNTP. {ECO:0000250}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|HAMAP-Rule:MF_00124}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00124}.
CC   -!- SIMILARITY: Belongs to the thymidine kinase family.
CC       {ECO:0000255|HAMAP-Rule:MF_00124}.
DR   EMBL; AE014075; AAN80170.1; -; Genomic_DNA.
DR   RefSeq; WP_000068076.1; NC_004431.1.
DR   ProteinModelPortal; Q8FHX4; -.
DR   STRING; 199310.c1703; -.
DR   EnsemblBacteria; AAN80170; AAN80170; c1703.
DR   KEGG; ecc:c1703; -.
DR   eggNOG; ENOG4107104; Bacteria.
DR   eggNOG; COG1435; LUCA.
DR   HOGENOM; HOG000076391; -.
DR   KO; K00857; -.
DR   OMA; KEQFGWI; -.
DR   BioCyc; ECOL199310:C1703-MONOMER; -.
DR   Proteomes; UP000001410; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0004797; F:thymidine kinase activity; IEA:UniProtKB-EC.
DR   GO; GO:0071897; P:DNA biosynthetic process; IEA:UniProtKB-KW.
DR   HAMAP; MF_00124; Thymidine_kinase; 1.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR001267; Thymidine_kinase.
DR   InterPro; IPR020633; Thymidine_kinase_CS.
DR   PANTHER; PTHR11441; PTHR11441; 1.
DR   Pfam; PF00265; TK; 1.
DR   PIRSF; PIRSF035805; TK_cell; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   PROSITE; PS00603; TK_CELLULAR_TYPE; 1.
PE   3: Inferred from homology;
KW   Allosteric enzyme; ATP-binding; Complete proteome; Cytoplasm;
KW   DNA synthesis; Kinase; Metal-binding; Nucleotide-binding; Transferase;
KW   Zinc.
FT   CHAIN         1    205       Thymidine kinase.
FT                                /FTId=PRO_0000174972.
FT   NP_BIND       9     16       ATP. {ECO:0000255|HAMAP-Rule:MF_00124}.
FT   NP_BIND      87     90       ATP. {ECO:0000255|HAMAP-Rule:MF_00124}.
FT   ACT_SITE     88     88       Proton acceptor. {ECO:0000255|HAMAP-
FT                                Rule:MF_00124}.
FT   METAL       145    145       Zinc. {ECO:0000255|HAMAP-Rule:MF_00124}.
FT   METAL       147    147       Zinc. {ECO:0000255|HAMAP-Rule:MF_00124}.
FT   METAL       182    182       Zinc. {ECO:0000255|HAMAP-Rule:MF_00124}.
FT   METAL       185    185       Zinc. {ECO:0000255|HAMAP-Rule:MF_00124}.
SQ   SEQUENCE   205 AA;  23400 MW;  533166D9E91D1F52 CRC64;
     MAQLYFYYSA MNAGKSTALL QSSYNYQERG MRTVVYTAEI DDRFGAGKVS SRIGLSSPAK
     LFNQNSSLFD EIRAEHEQQA IHCVLVDECQ FLTRQQVYEL SEVVDQLDIP VLCYGLRTDF
     RGELFIGSQY LLAWSDKLVE LKTICFCGRK ASMVLRLDQA GRPYNEGEQV VIGGNERYVS
     VCRKHYKEAL EVGSLTAIQE RHRHD
//
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