ID   KITH_ALBFT              Reviewed;         197 AA.
AC   Q21Q74;
DT   27-JUN-2006, integrated into UniProtKB/Swiss-Prot.
DT   18-APR-2006, sequence version 1.
DT   27-MAR-2024, entry version 91.
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};
GN   OrderedLocusNames=Rfer_4385;
OS   Albidiferax ferrireducens (strain ATCC BAA-621 / DSM 15236 / T118)
OS   (Rhodoferax ferrireducens).
OG   Plasmid plasmid1.
OC   Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC   Comamonadaceae; Rhodoferax.
OX   NCBI_TaxID=338969;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-621 / DSM 15236 / T118;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Pitluck S., Brettin T., Bruce D.,
RA   Han C., Tapia R., Gilna P., Kiss H., Schmutz J., Larimer F., Land M.,
RA   Kyrpides N., Ivanova N., Richardson P.;
RT   "Complete sequence of plasmid 1 of Rhodoferax ferrireducens DSM 15236.";
RL   Submitted (FEB-2006) to the EMBL/GenBank/DDBJ databases.
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; CP000268; ABD72071.1; -; Genomic_DNA.
DR   RefSeq; WP_011458668.1; NC_007901.1.
DR   AlphaFoldDB; Q21Q74; -.
DR   SMR; Q21Q74; -.
DR   KEGG; rfr:Rfer_4385; -.
DR   eggNOG; COG1435; Bacteria.
DR   HOGENOM; CLU_064400_2_2_4; -.
DR   OrthoDB; 9781579at2; -.
DR   Proteomes; UP000008332; Plasmid pDSM15236.
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; 3.30.60.20; -; 1.
DR   Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR   HAMAP; MF_00124; Thymidine_kinase; 1.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   InterPro; IPR001267; Thymidine_kinase.
DR   PANTHER; PTHR11441; THYMIDINE KINASE; 1.
DR   PANTHER; PTHR11441:SF0; THYMIDINE KINASE, CYTOSOLIC; 1.
DR   Pfam; PF00265; TK; 1.
DR   PIRSF; PIRSF035805; TK_cell; 1.
DR   SUPFAM; SSF57716; Glucocorticoid receptor-like (DNA-binding domain); 1.
DR   SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; DNA synthesis; Kinase; Metal-binding;
KW   Nucleotide-binding; Plasmid; Reference proteome; Transferase; Zinc.
FT   CHAIN           1..197
FT                   /note="Thymidine kinase"
FT                   /id="PRO_0000242801"
FT   ACT_SITE        84
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         9..16
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         83..86
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         141
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         143
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         178
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
FT   BINDING         181
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00124"
SQ   SEQUENCE   197 AA;  21403 MW;  C082B6826ACF3A1F CRC64;
     MSQLTFIFAA MNAGKSTLLL QAAHNYVERG MAVELYTAAL DTRAGLGVIR SRLGIERGAS
     TFNADTVFDH RILERDTACL LIDESQFLRP VQVRQLHRLA HTSQVPIRCY GLRSDFLGHP
     FAGSAALLTL ADEFEEVRAV CGCGKKATMN ARLDATGARV SAGEQTLIGG NERYIAMCPR
     CFYLDSAGEQ DAQSTAA
//