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Protein

Thymidine kinase

Gene

TK

Organism
Vaccinia virus (strain Tian Tan) (VACV)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Phosphorylates thymidine and thymidine analogs, such as azidothymidine (AZT). Part of the salvage pathway for pyrimidine deoxyribonucleotide synthesis (By similarity).By similarity

Catalytic activityi

ATP + thymidine = ADP + thymidine 5'-phosphate.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei83 – 831Proton acceptorSequence Analysis
Binding sitei113 – 1131Substrate; via amide nitrogenBy similarity
Metal bindingi138 – 1381ZincBy similarity
Metal bindingi141 – 1411ZincBy similarity
Metal bindingi170 – 1701ZincBy similarity
Metal bindingi173 – 1731ZincBy similarity

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi11 – 188ATPBy similarity

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Kinase, Transferase

Keywords - Biological processi

DNA synthesis

Keywords - Ligandi

ATP-binding, Metal-binding, Nucleotide-binding, Zinc

Names & Taxonomyi

Protein namesi
Recommended name:
Thymidine kinase (EC:2.7.1.21)
Gene namesi
Name:TK
ORF Names:TJ2R
OrganismiVaccinia virus (strain Tian Tan) (VACV)
Taxonomic identifieri10253 [NCBI]
Taxonomic lineageiVirusesdsDNA viruses, no RNA stagePoxviridaeChordopoxvirinaeOrthopoxvirusVaccinia virus
Virus hostiHomo sapiens (Human) [TaxID: 9606]

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 177177Thymidine kinasePRO_0000174939Add
BLAST

Interactioni

Subunit structurei

Homotetramer. Two molecules of substrate bind to each enzyme tetramer.By similarity

Structurei

3D structure databases

ProteinModelPortaliQ9JFB7.
SMRiQ9JFB7. Positions 4-175.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni157 – 1615Substrate bindingBy similarity

Sequence similaritiesi

Belongs to the thymidine kinase family.Curated

Family and domain databases

InterProiIPR027417. P-loop_NTPase.
IPR001267. Thymidine_kinase.
IPR020633. Thymidine_kinase_CS.
[Graphical view]
PANTHERiPTHR11441. PTHR11441. 1 hit.
PfamiPF00265. TK. 1 hit.
[Graphical view]
PIRSFiPIRSF035805. TK_cell. 1 hit.
SUPFAMiSSF52540. SSF52540. 1 hit.
PROSITEiPS00603. TK_CELLULAR_TYPE. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q9JFB7-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNGGHIQLMI GPMFSGKSTE LIRRVRRYQI AQYKCVTIKY SNDNRYGTGL
60 70 80 90 100
WTHDKNNFEA LEATKLCDVL ESITDFSVIG IDEGQFFPDI VEFCERMANE
110 120 130 140 150
GKIVIVAALD GTFQRKPFNN ILNLIPLSEM VVKLTAVCMK CFKEASFSKR
160 170
LGEETEIEII GGNDMYQSVC RKCYIDS
Length:177
Mass (Da):20,118
Last modified:October 1, 2000 - v1
Checksum:i480CE5FE6A3B3911
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF095689 Genomic DNA. Translation: AAF33953.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF095689 Genomic DNA. Translation: AAF33953.1.

3D structure databases

ProteinModelPortaliQ9JFB7.
SMRiQ9JFB7. Positions 4-175.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

InterProiIPR027417. P-loop_NTPase.
IPR001267. Thymidine_kinase.
IPR020633. Thymidine_kinase_CS.
[Graphical view]
PANTHERiPTHR11441. PTHR11441. 1 hit.
PfamiPF00265. TK. 1 hit.
[Graphical view]
PIRSFiPIRSF035805. TK_cell. 1 hit.
SUPFAMiSSF52540. SSF52540. 1 hit.
PROSITEiPS00603. TK_CELLULAR_TYPE. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Complete genomic sequence of vaccinia virus (Tian Tan strain)."
    Jin Q., Hou Y.D., Cheng N.H., Yao E.M., Cheng S.X., Yang X.K., Jing D.Y., Yu W.H., Yuan J.S., Ma X.J.
    Submitted (SEP-1998) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Entry informationi

Entry nameiKITH_VACCT
AccessioniPrimary (citable) accession number: Q9JFB7
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 2, 2002
Last sequence update: October 1, 2000
Last modified: January 7, 2015
This is version 49 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programViral Protein Annotation Program

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.