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Engineering of Escherichia coli for the biosynthesis of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) from glucose

Engineering of Escherichia coli for the biosynthesis of... The copolymer poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [P(HB-co-HHx)] has the potential to serve as a biodegradable tissue engineering material. However, the production of this kind of copolymer still suffers from high cost and uncertainty. We describe here the design of metabolic pathways to synthesize P(HB-co-HHx) directly from glucose using recombinant Escherichia coli. By combining the BktB-dependent condensation pathway with the inverted β-oxidation cycle pathway, we were able to synthesize a P(HB-co-HHx) copolymer with a 10 mol% HHx fraction in recombinant E. coli. After optimizing the host strain and employing thioesterase mutant strains, the engineered E. coli produced 12.9 wt% P(HB-co-HHx) with a 13.2 mol% 3HHx fraction. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Microbiology and Biotechnology Springer Journals

Engineering of Escherichia coli for the biosynthesis of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) from glucose

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References (57)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer-Verlag Berlin Heidelberg
Subject
Life Sciences; Microbiology; Microbial Genetics and Genomics; Biotechnology
ISSN
0175-7598
eISSN
1432-0614
DOI
10.1007/s00253-015-6380-0
pmid
25586585
Publisher site
See Article on Publisher Site

Abstract

The copolymer poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [P(HB-co-HHx)] has the potential to serve as a biodegradable tissue engineering material. However, the production of this kind of copolymer still suffers from high cost and uncertainty. We describe here the design of metabolic pathways to synthesize P(HB-co-HHx) directly from glucose using recombinant Escherichia coli. By combining the BktB-dependent condensation pathway with the inverted β-oxidation cycle pathway, we were able to synthesize a P(HB-co-HHx) copolymer with a 10 mol% HHx fraction in recombinant E. coli. After optimizing the host strain and employing thioesterase mutant strains, the engineered E. coli produced 12.9 wt% P(HB-co-HHx) with a 13.2 mol% 3HHx fraction.

Journal

Applied Microbiology and BiotechnologySpringer Journals

Published: Jan 15, 2015

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