volume 16, issue 5, P420-424 1994
DOI: 10.1016/0141-0229(94)90158-9
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Alain Moreau, François Shareck, Dieter Kluepfel, Rolf Morosoli

Abstract: The xylanase A gene from Streptomyces lividans was modified by site-directed mutagenesis, selecting for mutations that improved the catalytic activity and thermostability of the enzyme. Mutant notation uses the one-letter abbreviation for amino acids. The first and the last letters represent, respectively, the residue to be changed and the replacing residue. The number indicates the position of the substitution. The mutant enzymes F155Y, R156E, R156K, and N173D were respectively 28, 10, 50, and 25% more active…

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