alexa The CD4 and CD8 T cell surface antigens are associated with the internal membrane tyrosine-protein kinase p56lck.


Journal of Clinical & Cellular Immunology

Author(s): Veillette A, Bookman MA, Horak EM, Bolen JB

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Abstract The CD4 and CD8 T cell antigens are thought to transduce an independent signal during the process of T cell activation. We report our evaluation of the possible involvement of the lymphocyte-specific tyrosine kinase p56lck in these transduction pathways. Our data demonstrate that p56lck is specifically modulated with either CD4 or CD8 following antibody-mediated cross-linking of these molecules and that a large fraction of the total cellular lck protein can be coimmunoprecipitated with these surface glycoproteins. These results suggest that p56lck is functionally and physically associated with CD4/CD8 in normal murine T lymphocytes and support the concept that an independent signal is transduced by the interaction of these surface molecules with major histocompatibility complex determinants.
This article was published in Cell and referenced in Journal of Clinical & Cellular Immunology

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