Adaptation of Rhodopseudomonas acidophila strain 7050 to growth at different light intensities: what are the benefits to changing the type of LH2?

Gardiner, A. T., Niedzwiedzki, D. M. and Cogdell, R. J. (2018) Adaptation of Rhodopseudomonas acidophila strain 7050 to growth at different light intensities: what are the benefits to changing the type of LH2? Faraday Discussions, 207, pp. 471-489. (doi: 10.1039/C7FD00191F) (PMID:29355274)

Abstract

Typical purple bacterial photosynthetic units consist of light harvesting one/reaction centre ‘core’ complexes surrounded by light harvesting two complexes. Factors such as the number and size of photosynthetic units per cell, as well as the type of light harvesting two complex that is produced, are controlled by environmental factors. In this paper, the change in the type of LH2 present in the Rhodopseudomonas acidophila strain 7050 is described when cells are grown at a range of different light intensities. This species contains multiple pucBA genes that encode the apoproteins that form light-harvesting complex two and a more complex mixture of spectroscopic forms of this complex has been found than was previously thought to be the case. Femto-second time resolved laser flash photolysis has been used to investigate how the energy transfer properties in membranes from high-light and low-light adapted cells change as the composition of the LH2 complexes varies.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Cogdell, Professor Richard and Gardiner, Dr Alastair
• Authors: Gardiner, A. T., Niedzwiedzki, D. M., and Cogdell, R. J.
• College/School: College of Medical Veterinary and Life Sciences > School of Molecular Biosciences
• Journal Name: Faraday Discussions
• Publisher: Royal Society of Chemistry
• ISSN: 1359-6640
• ISSN (Online): 1364-5498
• Published Online: 18 October 2017
• Copyright Holders: Copyright © 2017 Royal Society of Chemistry
• First Published: First published in Faraday Discussions 207:471-489
• Publisher Policy: Reproduced under a Creative Commons License