Respiratory Energy Metabolism

Authored by: M. Bott , A. Niebisch

Handbook of Corynebacterium glutamicum

Print publication date:  March  2005
Online publication date:  March  2005

Print ISBN: 9780849318214
eBook ISBN: 9781420039696
Adobe ISBN:


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Corynebacterium glutamicum has a respiratory kind of energy metabolism, with oxygen as the terminal electron acceptor. Growth by fermentative catabolism or by anaerobic respiration has not been reported. The first studies on the respiratory chain of this organism were triggered by the observation that copper deficiency decreased glutamate formation from acetate by an oleic acid–requiring C. glutamicum strain (Brevibacterium thiogenitalis) owing to an increased oxidation of acetate to CO2 [28]. The effect of copper was due to a functional change of the respiratory chain. Evidence was obtained that under copper sufficiency electron transfer from NADH to oxygen involves a cytochrome bc 1 complex and cytochrome aa 3 oxidase, whereas under copper deficiency a- and c-type cytochromes are missing and instead cyto-chrome d was formed [69,70].

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