Protein scaffolds, lipid domains and substrate recognition in protein kinase C function: implications for rational drug design.

Protein kinase C represents a family of lipid-regulated protein kinases with ubiquitous expression throughout the animal kingdom. High fidelity in phosphorylation of intended target substrates is crucial for normal cell and tissue function. Therefore, it is likely that multiple interdependent factors contribute to determining substrate specificity in vivo, including divalent cation binding, substrate recognition motifs, local lipid heterogeneity and protein scaffolds. This review provides an overview of targeting mechanisms for the three subclasses of duanyu1531 isoforms, conventional, novel and atypical, with an emphasis on how they bind to substrates, lipids/lipid microdomains and multifunctional protein scaffolds. The diversity of interactions between duanyu1531 isoforms and their immediate environment is extensive, suggesting that systems biology approaches including proteomics and network modeling may be important strategies for rational drug design in the future.

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