PtkA

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  • Description: protein tyrosine kinase

Gene name ptkA
Synonyms ywqD
Essential no
Product protein tyrosine kinase
Function protein phosphorylation
MW, pI 25 kDa, 9.628
Gene length, protein length 711 bp, 237 aa
Immediate neighbours ptpZ, tkmA
Get the DNA and protein sequences
(Barbe et al., 2009)
Genetic context
YwqD context.gif
This image was kindly provided by SubtiList




The gene

Basic information

  • Coordinates:

Phenotypes of a mutant

Accumulation of extra chromosome equivalents PubMed

Database entries

  • DBTBS entry: [1]
  • SubtiList entry: [2]

Additional information

The protein

Basic information/ Evolution

  • Catalyzed reaction/ biological activity: autophosphorylation, phosphorylation of YwqF, TuaD, Ssb, YwpH
  • Protein family: BY-kinase
  • Paralogous protein(s): EpsB

Extended information on the protein

  • Kinetic information:
  • Domains: single BY-kinase domain
  • Modification: autophosphorylation at residues Y225, Y227 and Y228 (primary site)
  • Cofactor(s): ATP
  • Effectors of protein activity: TkmA - transmembrane modulator, activates PtkA autophosphorylation and substrate phosphorylation PubMed
  • Localization:

Database entries

  • Structure: 2VED (CapB, the homolog in Staphylococcus aureus)
  • E.C. number:

Additional information

Expression and regulation

  • Regulation:
  • Regulatory mechanism:
  • Additional information:

Biological materials

  • Mutant: KO strain created with pMUTIN-2, available from Ivan Mijakovic
  • Expression vector: pQE-30, N-terminally 6xHis-tagged, available from Ivan Mijakovic
  • lacZ fusion: in a KO strain created with pMUTIN-2, available from Ivan Mijakovic
  • two-hybrid system:
  • Antibody:

Labs working on this gene/protein

Ivan Mijakovic, Thiverval-Grignon, France

Your additional remarks

References

  1. Mijakovic I, Poncet S, Boël G, Mazé A, Gillet S, Decottignies P, Grangeasse C, Jamet E, Doublet P, Le Maréchal P, Deutscher J (2003) Transmembrane modulator-dependent bacterial tyrosine kinase activates UDP-glucose dehydrogenases. EMBO J 22:4709-4718. PubMed
  2. Mijakovic I, Petranovic D, Deutscher J (2004) How tyrosine phosphorylation affects the UDP-glucose dehydrogenase activity of Bacillus subtilis YwqF. J Mol Microbiol Biotechnol 8:19-25. PubMed
  3. Mijakovic I, Musumeci L, Tautz L, Petranovic D, Edwards RA, Jensen PR, Mustelin T, Deutscher J, Bottini N (2005) In vitro characterization of the Bacillus subtilis protein tyrosine phosphatase YwqE. J Bacteriol 187(10):3384-3390 PubMed
  4. Mijakovic I, Petranovic D, Macek B, Cepo T, Mann M, Davies J, Jensen PR, Vujaklija D (2006) Bacterial single-stranded DNA-binding proteins are phosphorylated on tyrosine. Nucl Acids Res 34:1588-1596. PubMed
  5. Petranovic D, Michelsen O, Zahradka K, Silva C, Petranovic M, Jensen PR, Mijakovic I (2007) Bacillus subtilis strain deficient for the protein-tyrosine kinase PtkA exhibits impaired DNA replication. Mol Microbiol 63:1797-1805. PubMed