The crystal structure of a cyanobacterial water-soluble carotenoid binding protein.

Abstract

Carotenoids undergo a wide range of photochemical reactions in animal, plant, and microbial systems. In photosynthetic organisms, in addition to light harvesting, they perform an essential role in protecting against light-induced damage by quenching singlet oxygen, superoxide anion radicals, or triplet-state chlorophyll. We have determined the crystal structure of a water-soluble orange carotenoid protein (OCP) isolated from the cyanobacterium Arthrospira maxima at a resolution of 2.1 A. OCP forms a homodimer with one carotenoid molecule per monomer. The carotenoid binding site is lined by a striking number of methionine residues. The structure reveals several possible ways in which the protein environment influences the spectral properties of the pigment and provides insight into how the OCP carries out its putative functions in photoprotection.

Statistics

050'05'06'07'08'09'10'11'12'13'14'15'16'17
Citations per Year

186 Citations

Semantic Scholar estimates that this publication has 186 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Kerfeld2003TheCS, title={The crystal structure of a cyanobacterial water-soluble carotenoid binding protein.}, author={Cheryl A. Kerfeld and Michael R. Sawaya and Vishnu Brahmandam and Duilio Cascio and Kwok Ki Ho and Colleen C Trevithick-Sutton and David W. Krogmann and Todd O. Yeates}, journal={Structure}, year={2003}, volume={11 1}, pages={55-65} }