Article
Introducing transglycosylation activity into human salivary alpha-amylase (HSA).
Organic letters - 11 Dec 2003
Remenyik Judit, Ragunath Chandran, Ramasubbu Narayanan, Gyémánt Gyöngyi, Lipták András, Kandra Lili
Abstract excerpt
Synthesis of 4-nitrophenyl 1-thio-beta-D-maltoside, maltotrioside, and maltotetraoside in yields up to 60% has been achieved by a Tyr151Met (Y151M) mutant of human salivary alpha-amylase. Y151M is capable of transferring maltose and maltotriose residues from a maltotetraose donor onto different p-nitrophenyl glycosides. (1)H and (13)C NMR studies revealed that the mutated enzyme preserved the stereo- and...
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