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Curr Opin Struct Biol. 2002 Feb;12(1):61-8.

The modular logic of signaling proteins: building allosteric switches from simple binding domains.

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Department of Cellular and Molecular Pharmacology, Department of Biochemistry and Biophysics, University of California, San Francisco 94143-0450, USA.


Many eukaryotic signal transduction proteins have component-based architectures: they are built from combinations of protein interaction domains and catalytic domains. Intact, these proteins display the sophisticated allosteric behavior required for cellular regulation; the protein's output activity is tightly repressed under basal conditions, but can be robustly activated by a specific set of input effector ligands. A combination of structural, biophysical and computational studies is beginning to shed light on the fundamental principles governing this type of modular allostery.

[Indexed for MEDLINE]

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