Abstract

Interactions between G proteins and GPCRs are fundamental for transmitting signals for a multitude of physiologic responses. Little is known regarding the protein-protein interface between the G protein and the receptor, much less the mechanisms for receptor activation of G proteins. Here, we will describe how expressed protein ligation will aid in the study of protein-protein interactions between semi-synthetic G alpha subunits and GPCRs.

Keywords: g protein, intein, expressed protein ligation, rhodopsin, transducin