Visualization of fas-mediated death-inducing signaling complex formation by immunoprecipitation.

The prototypical death receptor Fas (also known as CD95 or Apo-1) plays an essential role in the maintenance of lymphocyte homeostasis. Propagation of cell death through Fas relies on the formation of a multiprotein complex at the receptor level known as the death-inducing signaling complex (DISC). Here, we describe an immunoprecipitation-based protocol to study DISC assembly in activated human T lymphocytes. This procedure is a useful tool to visualize proteins associated with Fas.