title: The kinetic-segregation model: TCR triggering and beyond.
abstract: How the T cell receptor engages antigen is known, but not how that 'triggers' intracellular signaling. The first direct support for a mechanism based on the spatial reorganization of signaling proteins, proposed 10 years ago and referred to as the 'kinetic-segregation' model, is now beginning to emerge, along with indications that it may also apply to the triggering of nonclonotypic receptors. We describe here the development of the model, review new data and suggest how the model fits a broader conceptual framework for receptor triggering. We also consider the capacity of the model, versus that of other proposals, to account for the established features of TCR triggering.
authors.affiliation: Nuffield Department of Clinical Medicine, The University of Oxford, and MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Headington, Oxford, OX3 9DS, UK. simon.davis@ndm.ox.ac.uk
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Davis
authors.forename: P Anton
authors.initials: PA
authors.lastname: van der Merwe
mesh_terms: D000818:Animals; D006801:Humans; D008213:Lymphocyte Activation / Q000276:immunology*; D018448:Models, Immunological; D011948:Receptors, Antigen, T-Cell / Q000276:immunology*; D015398:Signal Transduction / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D011948:Receptors, Antigen, T-Cell