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Review
Nature Reviews Immunology 7, 841–850 (1 November 2007) | doi:10.1038/nri2186
Common themes in the assembly and architecture of activating immune receptors
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Abstract
Each of the many different cell types of the immune system expresses one or several activating receptors which serve a central role in the cell's surveillance function. Many of these cell-surface receptors share a distinctive modular design that consists of a ligand-binding module with no intrinsic signalling capability that is non-covalently associated with one or more dimeric signalling modules. Receptor assembly is directed by unique polar contacts within the transmembrane domains, whereas extracellular contacts can contribute to stability and specificity. This Review discusses the structural basis of receptor assembly and the implications of these findings for the mechanisms of receptor triggering.
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