Gardiner, A., Nguyen-Phan, T. C. and Cogdell, R. J. (2020) A comparative look at structural variation among RC-LH1 ‘core’ complexes present in anoxygenic phototrophic bacteria. Photosynthesis Research, 145(2), pp. 83-96. (doi: 10.1007/s11120-020-00758-3) (PMID:32430765) (PMCID:PMC7423801)
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Abstract
All purple photosynthetic bacteria contain RC–LH1 ‘Core’ complexes. The structure of this complex from Rhodobacter sphaeroides, Rhodopseudomonas palustris and Thermochromatium tepidum has been solved using X-ray crystallography. Recently, the application of single particle cryo-EM has revolutionised structural biology and the structure of the RC–LH1 ‘Core’ complex from Blastochloris viridis has been solved using this technique, as well as the complex from the non-purple Chloroflexi species, Roseiflexus castenholzii. It is apparent that these structures are variations on a theme, although with a greater degree of structural diversity within them than previously thought. Furthermore, it has recently been discovered that the only phototrophic representative from the phylum Gemmatimonadetes, Gemmatimonas phototrophica, also contains a RC–LH1 ‘Core’ complex. At present only a low-resolution EM-projection map exists but this shows that the Gemmatimonas phototrophica complex contains a double LH1 ring. This short review compares these different structures and looks at the functional significance of these variations from two main standpoints: energy transfer and quinone exchange.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Cogdell, Professor Richard and Nguyen Phan, Cam Tu and Gardiner, Dr Alastair |
| Authors: | Gardiner, A., Nguyen-Phan, T. C., and Cogdell, R. J. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
| Journal Name: | Photosynthesis Research |
| Publisher: | Springer |
| ISSN: | 0166-8595 |
| ISSN (Online): | 1573-5079 |
| Published Online: | 19 May 2020 |
| Copyright Holders: | Copyright © 2020 The Authors |
| First Published: | First published in Photosynthesis Research 145(2): 83-96 |
| Publisher Policy: | Reproduced under a Creative Commons license |
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