Method of production of poly-.beta.-hydroxyalkanoate copolymers
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United States of America Patent
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Apr 6, 1999
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Jun 24, 1997
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Mar 24, 1993
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Abstract
The present invention provides methods for the production of poly-.beta.-hydroxyalkanoate copolymer comprising the steps of (a) introducing into a prokaryotic host cell a vector construct which directs the expression of a sequence which encodes a poly-.beta.-hydroxybutyrate biosynthetic pathway, (b) introducing into the host cell a vector construct which directs the expression of one or more proteins which regulate acetate and propionate metabolism, (c) culturing the host cell in medium containing propionate or a derivative thereof, and (d) isolating poly-.beta.-hydroxyalkanoate copolymer from the cultured host cell.
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