Production of trans-2,3-dihydro-3-hydroxyanthranilic acid by engineered Pseudomonas chlororaphis GP72

Production of trans-2,3-dihydro-3-hydroxyanthranilic acid by engineered Pseudomonas chlororaphis... Trans-2,3-dihydro-3-hydroxyanthranilic acid (DHHA) is a cyclic β-amino acid that can be used for the synthesis of chiral materials and nonnatural peptides. The aim of this study was to accumulate DHHA by engineering Pseudomonas chlororaphis GP72, a nonpathogenic strain that produces phenazine-1-carboxylic acid and 2-hydroxyphenazine. First, the phzF deletion mutant DA1 was constructed, which produced 1.91 g/L DHHA. Moreover, rpeA and pykF were disrupted and then ppsA and tktA were co-expressed in strain DA1. The resulting strain DA4 increased DHHA concentration to 4.98 g/L, which is 2.6-fold than that of DA1. The effects of the addition of glucose, glycerol, l-tryptophan, and Fe3+on DHHA production were also investigated. Strain DA4 produced 7.48 g/L of DHHA in the culture medium in the presence of 12 g/L glucose and 3 mM Fe3+, which was 1.5-fold higher than the strain in the original fermentation conditions. These results indicate the potential of P. chlororaphis GP72 as a DHHA producer. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Microbiology and Biotechnology Springer Journals

Production of trans-2,3-dihydro-3-hydroxyanthranilic acid by engineered Pseudomonas chlororaphis GP72

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany
Subject
Life Sciences; Microbiology; Microbial Genetics and Genomics; Biotechnology
ISSN
0175-7598
eISSN
1432-0614
D.O.I.
10.1007/s00253-017-8408-0
Publisher site
See Article on Publisher Site

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