Function of beta-carotene and tocopherol in photosystem II.
New and known structural and functional insights in the role of beta-carotene and of alpha-tocopherol in photosytem II are reviewed. A concept is presented connecting the failure of P680 triplet quenching by beta-carotene with the formation of singlet oxygen and its scavenging in the turnover of the D1 protein and by tocopherol in the maintenance of PS II structure and function.
Trebst
Achim
A
Biochemie der Pflanzen, Ruhr-Universität Bochum, 44827 Bochum, Germany. achim.trebst@ruhr-uni-bochum.de
D010788:Photosynthesis; D045332:Photosystem II Protein Complex / Q000378:metabolism*; D024505:Tocopherols / Q000378:metabolism*; D019207:beta Carotene / Q000378:metabolism*
D045332:Photosystem II Protein Complex; D019207:beta Carotene; D024505:Tocopherols