- Chemically modified enzymes
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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 R1is an alkyl and R2is a charged or polar moiety; b) —SR3, wherein R3is a substituted or unsubstituted phenyl; c) —SR4, wherein R4is substituted or unsubstituted cyclohexyl; d) —SR5, wherein R5is C10-C15alkyl; and e) —SR6wherein R6is a C1-6alkyl. 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.
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