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A novel sequence for phytoene dehydrogenation in Rhodospirillum rubrum.

ABSTRACT: Differences between the absorption spectra of zeta-carotene (7,8,7',8'-tetrahydrolycopene) and the corresponding conjugated heptaene from diphenylamine-inhibited cultures of Rhodospirillum rubrum have been rationalized by the identification of the latter compound as the unsymmetrical isomer, 7,8,11,12-tetrahydrolycopene. The structures of the other conjugated polyene hydrocarbons, phytoene, phytofluene and neurosporene, have been confirmed and a novel pathway for the dehydrogenation of phytoene to lycopene in these bacteria is described.

SUBMITTER: Davies BH

PROVIDER: S-EPMC1185328 | biostudies-other | 1970 Jan

REPOSITORIES: biostudies-other

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