Abstract

Stable assembly of the major LHC-II proteins (22, 26 kDa) is inhibited in the α-carotenoid-free mutant C-2A′-34 of the green alga Scenedesmus obliquus, whereas other LHC-II proteins (22, 23, 29 kDa) seem to be not affected. We conclude that lutein is essential for assembly of the major LHC-II proteins of S. obliquus, but not for assembly of the minor LHC-II proteins. It is proposed that in the minor LHC-II proteins lutein is replaced by violaxanthin, zeaxanthin and antheraxanthin.

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