NOVEL STAT FUNCTION-REGULATORY PROTEIN

摘要

A protein regulating the functions of STAT proteins in the JAK/STAT signal transmission system in mammals characterized by being induced by STAT3 or STAT6, inhibiting the tyrosine phosphorylation of gp130 and STAT3 and having an SH2 region; a DNA encoding this protein; a method for screening substances having the function of regulating cytokines with the use of the above protein; the antisense DNA and RNA inhibiting the biosynthesis of the above protein; a monoclonal antibody capable of binding to the above protein; probe DNA and RNA hybridizable with the above DNA; a recombinant DNA constructed by integrating the above DNA into a vector allowing the replication thereof; the resultant transformant; and a method for screening substances having the function of regulating cytokines with the use of the above transformant.