Article
Development of Bacillus subtilis mutants to produce tryptophan in pigs.
Biotechnology letters - 1 Feb 2017
Bjerre Karin, Cantor Mette D, Nørgaard Jan V, Poulsen Hanne D, Blaabjerg Karoline, Canibe Nuria, Jensen Bent B, Stuer-Lauridsen Birgitte, Nielsen Bea, Derkx Patrick M F
Abstract excerpt
OBJECTIVES: To generate tryptophan-overproducing Bacillus subtilis strains for in situ use in pigs, to reduce the feed cost for farmers and nitrogen pollution. RESULTS: A novel concept has been investigated-to generate B. subtilis strains able to produce tryptophan (Trp) in situ in pigs. Mutagenesis by UV was combined with selection on Trp and purine analogues in an iterative process. Two mutants from different...
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