Patent ID: 9023989
Filing Date: 2015-05-05
Classification: B82Y,C07K,H01L,Y02E,Y02P

Abstract:
1. An isolated modified bacteriorhodopsin protein with an amino acid sequence which, in comparison with the amino acid sequence of wild type H. salinarum bacteriorhodopsin protein encoded by bop gene, is modified with an amino acid substitution selected from the group consisting of G6C, R7C, E9N, G33D, G33E, V34D, V34E, A39E, A39D, K40Q, K40N, G72K, G72R, G73C, G73K, G73R, E74N, A103D, A103E, Q105E, Q105D, K159Q, K159N, R164N, G195K, G195R, A196K, A196R, G197K, G197R, R227N, A233E, A233D, A240E, A240D, A241E, A241D, A242E, A242D, A243E, A243D and a combination of two or more thereof, wherein the first letter and number in each member of the group corresponds to an amino acid in the wild type H. salinarum bacteriorhodopsin protein encoded by bop gene, and optionally one other amino acid substitution, wherein the modified bacteriorhodopsin protein is capable of converting sunlight into proton gradient and has a greater dipole moment than the dipole moment of the wild type H. salinarum bacteriorhodopsin protein.