Details

Autor(en) / Beteiligte

• Masamoto, K. (Kumamoto Univ. (Japan). Faculty of Education)
• Wada, H
• Kaneko, T
• Takaichi, S

Titel

Identification of a gene required for cis-to-trans carotene isomerization in carotenogenesis of the cyanobacterium Synechocystis sp. PCC 6803

Ist Teil von

• Plant and cell physiology, 2001-12, Vol.42 (12), p.1398-1402

Ort / Verlag

Japan: Oxford University Press

Erscheinungsjahr

2001

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• A disruptive mutant of the sll0033 gene of the cyano-bacterium Synechocystis sp. PCC 6803 produced primarily c/5 carotenes and small amounts of all-trans carotenes, but no xanthophylls, under dark conditions. Under light conditions, however, it produced normal carotenoids, that were the same as those produced by wild-type cells grown under both light and dark conditions. When the mutant cells cultured under dark conditions were irradiated, cis-isomers of carotenes were converted to all-trans lycopene. These findings demonstrate that this gene, designated crtH, is involved in the isomerization of cis-carotenes to all-trans forms in dark conditions, and that cis-carotenes were also converted to all-trans forms under light conditions by photoisomerization.