Abstract: The present invention discloses a yeast strain with high yield of glutathione, and belongs to the technical field of microorganisms. Saccharomyces cerevisiae tlj2016 provided in the present invention has been deposited in China General Microbiological Culture Collection Center of Microbe Preservation Management Committee, with a preservation number of CGMCC No. 12789. The strain can tolerate glucose with tolerance capability reaching 300 g/L, and has tolerance capability against L-cysteine that is far higher than that of the starting strain, contributing to the production of glutathione at conditions of high concentrations of glucose, with a final concentration of GSH produced through fermentation in a 5-L fermentation tank reaching 3308 mg/L.

Abstract: The invention relates to assays for screening for chemicals which affect the binding between proteins comprising an SH3 binding motif (such as Proline-rich Nuclear Receptor Co-regulatory protein (PNRC)) and nuclear receptor proteins. Compounds which affect the binding of PNRC to nuclear receptors can affect the expression of genes whose expression is under the control of nuclear receptors to which PNRC binds. PNRC interacts with the orphan receptors SF1 and ERR?1 in a ligand-independent manner and interacts with the ligand-binding domains of nuclear receptors such as ER, AR, PR, TR, BAR, and RXR in a ligand-dependent manner. A 23-amino acid region in the carboxy-terminal proline-rich region which contains an SH3-binding motif is sufficient for the interaction with nuclear receptors.