| abstract |
Modified enzymes are provided in which at least one amino acid, such as asparagine, leucine, methionine or serine, of an enzyme is replaced with a cysteine and the thiol hydrogen is replaced with a substituent group providing a thiol side chain selected from the group consisting of: a) -SR1R2, wherein R1 is an alkyl and R2 is a charged or polar moiety; b) -SR3, wherein R3 is a substituted or unsubstituted phenyl; c) -SR4, wherein R4 is substituted or unsubstituted cyclohexyl; d) -SR5, wherein R5 is C¿10?-C15 alkyl; and e) -SR?6¿ wherein R6 is a C¿1-6? alkyl. Also, methods of producing the modified enzymes are provided, as well as detergent and feed additives and a composition for the treatment of a textile. A method for using the modified enzymes in organic synthesis is additionally provided. Further, modified enzymes having improved activity, altered pH profile and/or wash performance are provided. |