Rhodopseudomonas viridis reaction centres

Lancaster CRD and Michel H (1999a) The structure of the Rhodopseudomonas viridis reaction centre—an overview and recent advances. In Garab G (ed) Photosynthesis Mechanisms and Effects, Vol II, pp 673-678. Kluwer Academic Publishers, Dordrecht... 

Deisenhofer, J., Epp, O., Miki, K., Huber, R., and Michel, H. Structure of the protein subunits in the photosynthetic reaction centre of Rhodopseudomonas viridis at 3 A resolution (1985) Nature 318, 618-624... 

Deisenhofer, J., and H. Michel, The photosynthetic reaction centre from the purple bacterium Rhodopseudomonas viridis. Science 245 1463, 1989. The structure of abacterial reaction center is revealed by x-ray crystallography. 

Fig. 1 Molecular arrangement of pigments in bacterial photo synthetic reaction centre from Rhodopseudomonas viridis (BChl bacteriochlorophyll BPh bacteriopheophytin) (taken from Deisenhofer et al., 1985).

Lancaster, C. R., and Michel, H., 1997, The coupling of light-induced electron transfer and proton uptake as derived from crystal structures of reaction centres from Rhodopseudomonas viridis modified at the binding site of the secondary quinone, Qb, Structure 5 1339nl359. 

The Structures of the Rhodopseudomonas Viridis and Rhodobacter Sphaeroides Reaction Centres... 

The larger part of research on light-driven eleetron transfer in purple photosynthetic bacteria has involved three speeies, Rhodopseudomonas (Rps.) viridis, Rhodobacter (Rb.) sphaeroides and Rb. capsulatus. The bulk of this article is written in reference to the Rb. sphaeroides reaetion eentre, the subject of the majority of spectroscopic and mutagenesis work earried out to date. However, much of the research described below has involved the reaction centre from Rb. capsulatus or Rps. viridis, or reaetion eentres from other species of purple bacteria. 

H Michel (1982) Three-dimensional crystals of a membrane protein complex. The photosynthetic reaction centre from Rhodopseudomonas viridis. J Mol Biol 158 567-572... 

O Kaminskaya, AA Konstantinov and VA Shuvaiov (19990) Low-temperature photooxidation of cytochrome c in reaction centre compiexes from Rhodopseudomonas viridis. Biochim Biophys Acta 1016 153-164... 

H Michel, 0 Epp and J Deisenhofer (1986) Pigment-protein interactions in the photosynthetic reaction centre from Rhodopseudomonas viridis. EMBO J 5 2445-2451... 

Deisenhofer, J. Michel, H. "The Photosynthetic Reaction Centre From the Purple Bacterium Rhodopseudomonas viridis," MBO J. 1989,8,2149-2170. 

The photosynthetic reaction centres (RCs) are transmembrane protein-pigment complexes that perform light-induced charge separation during the primary steps of photosynthesis. RCs from purple bacteria consist of three protein subunits, L, M and H, and bind four bacteriochlorophylls, two bacteriopheophytins, two quinones, one non-haem iron and one carotenoid. The elucidation at atomic resolution of the three-dimensional structures of the bacterial RCs from Rhodopseudomonas (Rps.) viridis (1) and Rhodobacter (Rb,) sphaeroides (2-4) has provided impetus for theoretical and experimental work on the mechanism of primary charge separation in the RCs. The structures revealed that the cofactors are bound at the interface between the L and M subunits and are organised around a pseudo C2 symmetry axis. However, the structural symmetry does not result in functional symmetry as the electron transfer proceeds only along the L branch (5). 

Lancaster CRD and Michel H (1999b) Refined crystal structures of reaction centres from Rhodopseudomonas viridis in complexes with the herbicide atrazine and two chiral atrazine derivatives also lead to a new model of the bound carotenoid. J Mol Biol 286 883-898... 

Lancaster CRD, ErmlerU and Michel H (1995) The structures of photosynthetic reaction centers from purple bacteria as revealed by X-ray crystallography. In Blankenship RE, Madigan MT and Bauer CE (eds) Anoxygenic Photosynthetic Bacteria, pp 503-526. Kluwer Academic Publishers, Dordrecht Lancaster CRD, Michel H, Honig B and Gunner MR (1996) Calculated coupling of electron and proton transfer in the photosyntheticreaction centre of Rhodopseudomonas viridis. Biophys 1 70 2469-2492... 

Michel H and Deisenhofer J (1988) Relevance of the photosynthetic reaction center from purple bacteria to the structure of Photosystem II. Biochemistry 27 1-7 Michel H, Weyer KA, Gruenberg K, Dunger I, Oesterhelt D and Lottspeich F (1986a) The Tight and medium subunits of the photosynthetic reaction centre from Rhodopseudomonas viridis Isolation of the genes, nucleotide and amino acid sequence. EMBOJ5 1149-1158... 

---