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TCR nanoclusters as the framework for transmission of conformational changes and cooperativity

By Raquel eBlanco and Balbino eAlarcon


Increasing evidence favors the notion that, before triggering, the T cell antigen receptor (TCR) forms nanometer-scale oligomers that are called nanoclusters. The organization of the TCR in pre-existing oligomers cannot be ignored when analyzing the properties of ligand (pMHC) recognition and signal transduction. As for other membrane receptors, the existence of TCR oligomers points out to cooperativity phenomena. We review the data in support of conformational changes in the TCR as the basic principle to transduce the activation signal to the cytoplasm and the incipient data suggesting cooperativity within nanoclusters

Topics: tcr, signaling, conformational change, nanoclusters, oligomers, cooperativity, Immunologic diseases. Allergy, RC581-607
Publisher: Frontiers Media S.A.
Year: 2012
DOI identifier: 10.3389/fimmu.2012.00115
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