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CD28 Costimulation: A Source of Vav-1 for TCR Signaling with the Help of SLP-76?

T cells require dual stimulation to become activated. When T cells encounter antigen-presenting cells, both the T cell receptor (TCR) and the CD28 coreceptor are ligated and activated. Michel and Acuto discuss how the adaptor SLP-76, which is recruited to the activated TCR complex, and the Rho family guanosine triphosphatase exchanger Vav-1, which is recruited by the CD28 receptor and TCR, may form a macromolecular complex that results in T cells activation. Vav-1 may serve as a central integrator between CD28 signaling and TCR signaling through its indirect effects on phosphoinositide 3-kinase-dependent signaling.

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Classifications


Resource Type: Diagram, Illustration, Journal article/Issue, Review
Audience Level: Undergraduate upper division 15-16, Graduate, Professional (degree program)

Author and Copyright


Authors and Editors: Frederique Michel of Molecular Immunology Unit, Institut Pasteur, Oreste Acuto of Department of Immunology, Institut Pasteur
Publisher: American Association for the Advancement of Science
Format: application/pdf, image/gif, image/jpeg, text/html
Copyright and other restrictions: Yes
Cost: Yes

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Collection:
STKE/Science Signaling


     
   

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