Hydroxylation of l-proline to cis-3-hydroxy-l-proline by recombinant Escherichia coli expressing a synthetic l-proline-3-hydroxylase gene

Add time:09/24/2019    Source:sciencedirect.com

A synthetic gene encoding a Streptomyces l-proline-3-hydroxylase was constructed and used to produce the hydroxylase protein in recombinant Escherichia coli. A fermentation process for growth of this recombinant E. coli for enzyme production was scaled-up to 250 L. A biotransformation process was developed using cell suspensions of the recombinant E. coli and subsequently scaled-up to 10 L for conversion of l-proline to cis-3-hydroxy-l-proline. A reaction yield of 85 M% and d.e. of 99.9% was obtained for cis-3-hydroxy-l-proline.

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