GENETIC SELECTION SYSTEM TO IDENTIFY PROTEASES, PROTEASE SUBSTRATES AND PROTEASE INHIBITORS
申请人:Cottier Valerie
公开号:US20090029369A1
公开(公告)日:2009-01-29
The present invention concerns a tester protein for identifying and/or monitoring protease activity in a cellular assay suitable for high throughput screenings by growth selection, wherein the tester polypeptide is a non-regulatory protein carrying a protease cleavage sequence. Upon co-expression of the protease recognizing said cleavage sequence the tester protein is inactivated, which influences the growth and/or survival of the host cells under the chosen conditions. However, in the presence of protease inhibitor the growth phenotype is reversed. The system can be used to identify proteases, protease inhibitors, and protease cleavage sites.