A novel S-enantioselective amidase acting on 3,3,3-trifluoro-2-hydroxy-2-methylpropanamide from Arthrobacter sp. S-2
2015
A novel S-enantioselective amidase acting on 3,3,3-trifluoro-2-hydroxy-2-methylpropanamide was purified from Arthrobacter sp. S-2. The enzyme acted S-enantioselectively on 3,3,3-trifluoro-2-hydroxy-2-methylpropanamide to yield (S)-3,3,3-trifluoro-2-hydroxy-2-methylpropanoic acid. Based on the N-terminal amino acid sequence of this amidase, the gene coding S-amidase was cloned from the genomic DNA of Arthrobacter sp. S-2 and expressed in an Escherichia coli host. The recombinant S-amidase was purified and characterized. Furthermore, the purified recombinant S-amidase with the C-His6-tag, which was expressed in E. coli as the C-His6-tag fusion protein, was used in the kinetic resolution of (±)-3,3,3-trifluoro-2-hydroxy-2-methylpropanamide to obtain (S)-3,3,3-trifluoro-2-hydroxy-2-methylpropanoic acid and (R)-3,3,3-trifluoro-2-hydroxy-2-methylpropanamide.
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