Potato protein kinase StCPK1: A putative evolutionary link between CDPKs and CRKs

Lóránt Lakatos, György Hutvágner, Zsófia Bánfalvi

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Calcium-dependent protein kinases (CDPKs) in plants are characterized by a four-domain structure including conserved sequences in the catalytic domain, and in the C-terminal calmodulin-like domain. Based on this conservation we have PCR-amplified and isolated a potato cDNA clone (StCPK1) from a library representing an early stage of tuber development. DNA sequence analysis revealed that in the catalytic domain, StCPK1 shares more homology with CDPK-related kinases than with CDPKs; however, like CDPKs, it possesses canonical EF-hands at the calmodulin-like 3' end. StCPK1 exists in a few copies in the potato genome and is abundantly expressed in the sepals of mature flowers. Floral expression of genes homologous to StCPK1 appears to be widespread in the family Solanaceae.

Original languageEnglish
Pages (from-to)101-108
Number of pages8
JournalBiochimica et Biophysica Acta - Gene Structure and Expression
Issue number2-3
Publication statusPublished - Nov 8 1998



  • Calcium-dependent protein kinase
  • Calcium-dependent protein kinase- related protein kinase
  • Floral expression
  • Solanaceae

ASJC Scopus subject areas

  • Structural Biology
  • Biophysics
  • Biochemistry
  • Genetics

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