ID   KITH_PORG3              Reviewed;         204 AA.
AC   B2RJJ6;
DT   24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   03-AUG-2022, entry version 65.
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=PGN_1022;
OS   Porphyromonas gingivalis (strain ATCC 33277 / DSM 20709 / CIP 103683 / JCM
OS   12257 / NCTC 11834 / 2561).
OC   Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Porphyromonadaceae;
OC   Porphyromonas.
OX   NCBI_TaxID=431947;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 33277 / DSM 20709 / CIP 103683 / JCM 12257 / NCTC 11834 / 2561;
RX   PubMed=18524787; DOI=10.1093/dnares/dsn013;
RA   Naito M., Hirakawa H., Yamashita A., Ohara N., Shoji M., Yukitake H.,
RA   Nakayama K., Toh H., Yoshimura F., Kuhara S., Hattori M., Hayashi T.,
RA   Nakayama K.;
RT   "Determination of the genome sequence of Porphyromonas gingivalis strain
RT   ATCC 33277 and genomic comparison with strain W83 revealed extensive genome
RT   rearrangements in P. gingivalis.";
RL   DNA Res. 15:215-225(2008).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + thymidine = ADP + dTMP + H(+); Xref=Rhea:RHEA:19129,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:17748, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:63528, ChEBI:CHEBI:456216; EC=2.7.1.21;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00124};
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. {ECO:0000255|HAMAP-
CC       Rule:MF_00124}.
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DR   EMBL; AP009380; BAG33541.1; -; Genomic_DNA.
DR   RefSeq; WP_012457965.1; NZ_CP025930.1.
DR   AlphaFoldDB; B2RJJ6; -.
DR   SMR; B2RJJ6; -.
DR   STRING; 431947.PGN_1022; -.
DR   EnsemblBacteria; BAG33541; BAG33541; PGN_1022.
DR   GeneID; 29256232; -.
DR   KEGG; pgn:PGN_1022; -.
DR   eggNOG; COG1435; Bacteria.
DR   HOGENOM; CLU_064400_3_0_10; -.
DR   OMA; ENTVNHK; -.
DR   BioCyc; PGIN431947:G1G2V-1155-MON; -.
DR   Proteomes; UP000008842; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004797; F:thymidine kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0071897; P:DNA biosynthetic process; IEA:UniProtKB-KW.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_00124; Thymidine_kinase; 1.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR001267; Thymidine_kinase.
DR   PANTHER; PTHR11441; PTHR11441; 1.
DR   Pfam; PF00265; TK; 1.
DR   PIRSF; PIRSF035805; TK_cell; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; DNA synthesis; Kinase; Metal-binding;
KW   Nucleotide-binding; Transferase; Zinc.
FT   CHAIN           1..204
FT                   /note="Thymidine kinase"
FT                   /id="PRO_1000095435"
FT   ACT_SITE        96
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         23..30
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         95..98
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         152
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         155
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         184
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         187
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
SQ   SEQUENCE   204 AA;  22711 MW;  356E60128AE63C43 CRC64;
     MDYEIENNHA DSIRRGSIEV ICGSMFSGKT EELLRRLRRA KIARQTVEIF KPTIDIRYDE
     TDVVSHDKNA IASAPVDNSA NILLLSSQVD VVGIDEAQFF DEGLVEVAQQ LADQGVRVVI
     AGLDMDFRRQ PFGPMPGLCA IADSVTKVHA VCVECGRLAS YSFRRVQGDQ QVMLGELNEY
     SPLCRTCYRK CSSPPQTEEI HSTI