FAP-1: A protein tyrosine phosphatase that associates with Fas

  • Sato T
  • Irie S
  • Kitada S
 et al. 
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Abstract

Fas is a cell surface receptor that controls a poorly understood signal transduction pathway that leads to cell death by means of apoptosis. A protein tyrosine phosphatase, FAP-1, capable of interacting with the cytosolic domain of Fas, was identified. The carboxyl terminal 15 amino acids of Fas are necessary and sufficient for interaction with FAP-1. FAP-1 expression is highest in tissues and cell lines that are relatively resistant to Fas-mediated cytotoxicity. Gene transfer-mediated elevations in FAP-1 partially abolished Fas-induced apoptosis in a T cell line. These findings are consistent with an inhibitory effect of FAP-1 on Fas signal transduction.

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Authors

  • Takaaki Sato

  • Shinji Irie

  • Shinichi Kitada

  • John C. Reed

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