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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Molecular cloning and functional expression in E. coli of a novel plant enzyme mediating zeta-carotene desaturation.

We have cloned a cDNA from the plant Capsicum annuum which encodes a novel enzyme mediating the dehydrogenation of zeta-carotene and neurosporene to lycopene when expressed in E. coli cells accumulating zeta-carotene or neurosporene. This enzyme is unable to dehydrogenate either phytoene or lycopene. The deduced amino acid sequence suggests that this cDNA encodes a polypeptide whose mature size is ca. 59 kDa and which is synthesized as a precursor with a NH2-terminal extension resembling transit peptides for plastid targeting. Sequence comparison reveals 33-35% similarity with previously cloned plant or cyanobacterial phytoene desaturases. In contrast, only limited sequence similarity is found with a zeta-carotene desaturase from the cyanobacterium Anabaena.[1]

References

  1. Molecular cloning and functional expression in E. coli of a novel plant enzyme mediating zeta-carotene desaturation. Albrecht, M., Klein, A., Hugueney, P., Sandmann, G., Kuntz, M. FEBS Lett. (1995) [Pubmed]
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