PMID: 2116134Jul 1, 1990Paper

Role of protein kinase C in cellular regulation

BioFactors
K P Huang

Abstract

Protein kinase C (PKC) consists of a family of closely related enzymes ubiquitously present in animal tissues. These enzymes respond to second messengers, Ca2+, diacylglycerol and arachidonic acid, to express their activities at membrane locations. Numerous hormones, neurotransmitters, growth factors and antigens are believed to transmit their signals by activation of a variety of phospholipases to generate these messengers. The various PKC isozymes, which exhibit distinct biochemical characteristics and unique cellular and subcellular localizations, may be differentially stimulated depending on the duration and strength of these messengers. Activation of PKC has been linked to the regulation of cell surface receptors, ion channels, secretion, gene expression, and neuronal plasticity and toxicity. The mechanisms of action of PKC in the regulation of these cellular functions are not entirely clear. Further study to identify the target substrates relevant to the various cellular functions is essential to define the functional diversity of this enzyme family.

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