Expression of human G3BP1 in E. coli

Abstract

G3BP1 (Ras-GTPase-activating protein SH3 domain-binding protein) is responsible for normal RNA stress granule (SG) assembly and overexpressed in many cancer cells. Deletion of G3BP1 decreases the number and size of SGs. SGs are complex of RNA and proteins that stall translation of protein in response to stress. Given the function of G3BP1 in stress granule assembly and tumor suppression, it is believed that G3BP1 regulates cell growth and proliferation as well. Here, I constructed the recombinant protein expression vector and systemically optimized condition for the expression of human G3BP1 protein in E. coli. This research should be useful for investigating further functional analysis and atomic structure of G3BP1.