ID   KITH_ELHVK              Reviewed;         356 AA.
AC   Q18LE8;
DT   03-MAY-2011, integrated into UniProtKB/Swiss-Prot.
DT   25-JUL-2006, sequence version 1.
DT   03-AUG-2022, entry version 34.
DE   RecName: Full=Thymidine kinase {ECO:0000255|HAMAP-Rule:MF_04029};
DE            EC=2.7.1.21 {ECO:0000255|HAMAP-Rule:MF_04029};
GN   Name=TK {ECO:0000255|HAMAP-Rule:MF_04029};
OS   Elephantid herpesvirus 1 (isolate Asian elephant/Berlin/Kiba/1998) (EIHV-1)
OS   (Elephant endotheliotropic herpesvirus).
OC   Viruses; Duplodnaviria; Heunggongvirae; Peploviricota; Herviviricetes;
OC   Herpesvirales; Herpesviridae; Betaherpesvirinae; Proboscivirus.
OX   NCBI_TaxID=654902;
OH   NCBI_TaxID=9783; Elephas maximus (Indian elephant).
OH   NCBI_TaxID=9785; Loxodonta africana (African elephant).
OH   NCBI_TaxID=99490; Loxodonta cyclotis (African forest elephant).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=17507487; DOI=10.1128/jvi.00255-07;
RA   Ehlers B., Kuchler J., Yasmum N., Dural G., Voigt S., Schmidt-Chanasit J.,
RA   Jakel T., Matuschka F.R., Richter D., Essbauer S., Hughes D.J., Summers C.,
RA   Bennett M., Stewart J.P., Ulrich R.G.;
RT   "Identification of novel rodent herpesviruses, including the first
RT   gammaherpesvirus of Mus musculus.";
RL   J. Virol. 81:8091-8100(2007).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=11172087; DOI=10.1099/0022-1317-82-3-475;
RA   Ehlers B., Burkhardt S., Goltz M., Bergmann V., Ochs A., Weiler H.,
RA   Hentschke J.;
RT   "Genetic and ultrastructural characterization of a European isolate of the
RT   fatal endotheliotropic elephant herpesvirus.";
RL   J. Gen. Virol. 82:475-482(2001).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=16963736; DOI=10.1099/vir.0.81977-0;
RA   Ehlers B., Dural G., Marschall M., Schregel V., Goltz M., Hentschke J.;
RT   "Endotheliotropic elephant herpesvirus, the first betaherpesvirus with a
RT   thymidine kinase gene.";
RL   J. Gen. Virol. 87:2781-2789(2006).
CC   -!- FUNCTION: Catalyzes the transfer of the gamma-phospho group of ATP to
CC       thymidine to generate dTMP in the salvage pathway of pyrimidine
CC       synthesis. The dTMP serves as a substrate for DNA polymerase during
CC       viral DNA replication. Allows the virus to be reactivated and to grow
CC       in non-proliferative cells lacking a high concentration of
CC       phosphorylated nucleic acid precursors. {ECO:0000255|HAMAP-
CC       Rule:MF_04029}.
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_04029};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_04029}.
CC   -!- SIMILARITY: Belongs to the herpesviridae thymidine kinase family.
CC       {ECO:0000255|HAMAP-Rule:MF_04029}.
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DR   EMBL; AF322977; ABG36571.1; -; Genomic_DNA.
DR   SMR; Q18LE8; -.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004797; F:thymidine kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0071897; P:DNA biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR   GO; GO:0006230; P:TMP biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.300; -; 1.
DR   HAMAP; MF_04029; HSV_KITH; 1.
DR   InterPro; IPR001889; Herpes_TK.
DR   InterPro; IPR027417; P-loop_NTPase.
DR   Pfam; PF00693; Herpes_TK; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
PE   3: Inferred from homology;
KW   ATP-binding; DNA synthesis; Early protein; Kinase; Nucleotide-binding;
KW   Transferase.
FT   CHAIN           1..356
FT                   /note="Thymidine kinase"
FT                   /id="PRO_0000408156"
FT   REGION          1..29
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        11..26
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   ACT_SITE        86
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04029"
FT   BINDING         61..68
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04029"
FT   BINDING         122
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04029"
FT   BINDING         208
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04029"
FT   BINDING         214
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04029"
SQ   SEQUENCE   356 AA;  40857 MW;  243F25646927F3D1 CRC64;
     MMDSRATYVP PKKISESNSN AEEDPTDCSK PITLKVPTVS ETVLATIPHK PQRHLTVYLE
     GCVGVGKTTM FKYVVDNMFV HTAYDEPMDH WTKWFPENIL QTIHEAVNLP TQEQHAYVFS
     CQNLIATSFL ARESGIVKTH PAPFDPSVDV ISIADRHALA AYVAFPIHHF LQGRFTYMEL
     QCMLWAFKQD SVDTIFLLQG CSEETLRRVK RRNRKVEHGV TIEYINSLQA AYTVILSTWY
     RATEYQYSAK RTVSEEISFF IAGPRRTLFY ILYDKRPITL PEIEILKLFR KISNDLKKLV
     LIPVNFQRLV YSSALRRLQD LLIVTPGVTS YIHNENVDTA TCAVADNPHF NHHDVS