Spectral dynamics in the B800 band of LH2 from Rhodospirillum molischianum: a single-molecule study

By C. Hofmann, T. Aartsma, H. Michel, J. Köhler. 2004

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The BChl a absorptions in the B800 spectrum of individual LH2 complexes from Rhodospirillum molischianum show sudden, reversible spectral jumps between a finite number of spectral positions. From our data, we conclude that these fluctuations result from conformational changes of the protein backbone in close vicinity of the chromophores which provides a sensitive tool to monitor local modulations of the pigment–protein interaction.

Subfields: Atomic and Molecular Physics, and Optics, Cellular and Molecular Neuroscience, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/29c7eb090b708125bd5400e9e28c6910ec260099