期刊
CELL
卷 111, 期 7, 页码 967-979出版社
CELL PRESS
DOI: 10.1016/S0092-8674(02)01194-7
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资金
- NIAID NIH HHS [AI45757, P01 AI045757] Funding Source: Medline
- NINDS NIH HHS [NS39096, R01 NS039096] Funding Source: Medline
The T cell receptor (TCR) serves a critical function in the immune system and represents one of the most complex receptor structures. A striking feature is the presence of nine highly conserved, potentially charged residues in the transmembrane helices. Previous models have attempted to explain assembly based on pairwise interactions of these residues. Using a novel method for the isolation of intact radiolabeled protein complexes, we demonstrate that one basic and two acidic transmembrane residues are required for the assembly of each of the three signaling dimers with the TCR. This remarkable three-helix arrangement applies to all three assembly steps and represents the organizing principle for the formation of this intricate receptor structure.
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