Microbial Production of L-Threonine Part III

Part III Virtual Production Systems

Production of L-threonine by auxotrophic mutants of Escherichia coli.

Two auxotrophic mutants of Escherichia coli have been shown to accumulate significant amounts of l-threonine in the culture medium. One mutant, 13071, is deficient in alpha,epsilon-diaminopimelic acid (DAP), and the other, 13070, is deficient in both DAP and methionine. Accumulation of l-threonine by 13071 in a synthetic medium with mannitol as the carbon source at 37 C incubation temperature w...

Systems metabolic engineering of Escherichia coli for L-threonine production

Amino-acid producers have traditionally been developed by repeated random mutagenesis owing to the difficulty in rationally engineering the complex and highly regulated metabolic network. Here, we report the development of the genetically defined L-threonine overproducing Escherichia coli strain by systems metabolic engineering. Feedback inhibitions of aspartokinase I and III (encoded by thrA a...

Mammography; Part III

From the Book of Mammography by Dr. Zabihollah Arnavaz - Head of Radiology Department of Jorjani Hospital, National University of Iran.

Microbial production of xylitol, L-xylulose and L-xylose

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Anne Usvalampi Name of the doctoral dissertation Publisher School of Chemical Technology Unit Department of Biotechnology and Chemical Technology Series Aalto University publication series DOCTORAL DISSERTATIONS 137/2013 Field of research Bioprocess Engineering Manuscript submitted 4 June 2013 Date of the defence 25 October 20...