Vitamin Synthesis: Carotenoids, Biotin, and Pantothenate

Authored by: G. Sandmann , H. Yukawa

Handbook of Corynebacterium glutamicum

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

Print ISBN: 9780849318214
eBook ISBN: 9781420039696
Adobe ISBN:

10.1201/9781420039696.ch17

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Abstract

Carotenoids are widespread in bacteria. In some cases, the presence of special derivatives of these pigments is characteristic for an individual taxon. Among the bacterial carotenoids, acyclic C40 compounds derived from neurosporene and lycopene as well as cyclic carotenoids like β-carotene derivatives or isorenieratene with aromatic end groups are found. Specific for bacteria are C30 carotenoids synthesized in parallel to the C40 pathway from shorter prenyl pyrophosphates and C50 carotenoids. As lipophilic molecules, carotenoids are integrated into membranes. There, they may have a protective function as antioxidants or act as a membrane stabilizer.

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