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Sequential Interactions of the TCR with Two Distinct Cytoplasmic Tyrosine Kinases

Iwashima, Makio, Irving, Bryan A., van Oers, Nicolai S. C., Chan, Andrew C., Weiss, Arthur·1994·Science

Abstract

The T cell antigen receptor (TCR) initiates signals by interacting with cytoplasmic protein tyrosine kinases (PTKs) through a 17-residue sequence motif [called the antigen recognition activation motif (ARAM)] that is contained in the TCRζ and CD3 chains. TCR stimulation induces the tyrosine phosphorylation of several cellular substrates, including the ARAMs. Lck kinase activity is required for phosphorylation of two conserved tyrosine residues in an ARAM. This phosphorylation leads to the recruitment of a second cytoplasmic PTK, ZAP-70, through both of the ZAP-70 Src homology 2 domains and its phosphorylation. Thus, TCR signal transduction is initiated by the sequential interaction of two PTKs with TCR ARAMs.

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Metadata

Authors
Iwashima, M., Irving, B. A., van Oers, N. S. C., Chan, A. C., & Weiss, A.
Venue
Science
Published
1994-02-25
Volume
263
Issue
5150
Pages
1136-1139
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1983960385
Cited by
714
References
0
FWCI
32.56
Type
journal article
Language
en
Open access
closed

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