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Comparisons of potentials for L-lysine production among different Corynebacterium glutamicum strains. 2006

Junko Ohnishi, and Masato Ikeda
BioFrontier Laboratories, Kyowa Hakko Kogyo Co., Ltd., Tokyo, Japan.

Corynebacterium glutamicum is an industrially important organism that is most widely used for the production of various amino acids. A defined L-lysine-producing mutant was generated by introduction of the lysC mutation (T311I) into each of six representative C. glutamicum strains. The resulting six isogenic mutants were compared for L-lysine production under traditional 30 degrees C conditions and industrially more advantageous 40 degrees C conditions. It was found that there were significant differences in yield and productivity, especially at 40 degrees C. These results indicate the diversity among C. glutamicum strains in fermentative characters, as well as the importance of selecting a strain with industrially best performance.

UI MeSH Term Description Entries
D008239 Lysine An essential amino acid. It is often added to animal feed. Enisyl,L-Lysine,Lysine Acetate,Lysine Hydrochloride,Acetate, Lysine,L Lysine
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures
D048230 Corynebacterium glutamicum A species of gram-positive, asporogenous, non-pathogenic, soil bacteria that produces GLUTAMIC ACID.
D018698 Glutamic Acid A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM. Aluminum L-Glutamate,Glutamate,Potassium Glutamate,D-Glutamate,Glutamic Acid, (D)-Isomer,L-Glutamate,L-Glutamic Acid,Aluminum L Glutamate,D Glutamate,Glutamate, Potassium,L Glutamate,L Glutamic Acid,L-Glutamate, Aluminum

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