0000000000531000

AUTHOR

Dairyl J. C. Pappin

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The Myristoylated Alanine-Rich C-Kinase Substrate (MARCKS) is Sequentially Phosphorylated by Conventional, Novel and Atypical Isotypes of Protein Kin…

1995

The myristoylated alanine-rich C-kinase substrate (MARCKS) is the major protein kinase C (PKC) substrate in many cell types including fibroblasts and brain cells. Here we describe the phosphorylation of MARCKS and the site specificity for different PKC isotypes. Conventional (c)PKC beta 1, novel (n)PKC delta and nPKC epsilon efficiently phosphorylated the MARCKS protein in vitro. The Km values were extremely low, reflecting a high affinity between kinases and substrate. The apparent affinity of nPKC delta (Km = 0.06 microM) was higher than that of nPKC epsilon and cPKC beta 1 (Km = 0.32 microM). The rate of substrate phosphorylation was inversely correlated with affinity and decreased in th…

inorganic chemicalsKinaseChemistryIntracellular Signaling Peptides and ProteinsMembrane ProteinsProteinsContext (language use)macromolecular substancesenvironment and public healthBiochemistryMolecular biologyCell biologyIsoenzymesSerineKineticsenzymes and coenzymes (carbohydrates)Substrate-level phosphorylationbacteriaPhosphorylationPhosphorylationMARCKSMyristoylated Alanine-Rich C Kinase SubstrateProtein Kinase CProtein kinase CMyristoylationEuropean Journal of Biochemistry
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