Light-harvesting complex aggregates

Ruban, A.V., Robert, B., and Horton, P. 1995. Resonance Raman spectroscopy of photosystem B light-harvesting complex of green plants. A comparison of trimeric and aggregated states. Biochemistry 34 2333-2337. 

Kirstein, S. and Daehne, S. (2006). J-aggregates of amphiphilic cyanine dyes self-organization of artificial light harvesting complexes. Int. J. Photoenergy 5, 1-21. 

Garab, G., Faludidaniel, A., Sutherland, J. C., and Hind, G. 1988. Macroorganization of chlorophyll a/b light-harvesting complex in thylakoids and aggregates Information from circular differential scattering. Biochemistry 27 2425-30. 

Naqvi KR, Mela TB, Raju BB, Jovrofi T, Simidjiev 1 and Garab G (1987) Quenching of chlorophyll a singlets and triplets by carotenoids in light-harvesting complex of Photosystem II Comparison of aggregates with trimers. Proc Natl Acad Sci USA 84 109-112... 

ROLE OF AGGREGATION STATE IN DIRECTED ENERGY TRANSFER WITfflN THE B875 LIGHT-HARVESTING COMPLEX 0 RHODOBACTER SPHAEROIDES. 

The photosystems are the major elements of light-harvesting complexes (LHC, Section 9.5) in which the chlorophylls are bound to the membrane by two anionic binding proteins a major polypeptide may associate with both PS I and PS II and two distinct polypeptides may bind only one of the photosystems. Of the total number of chlorophyll molecules in a photosystem, a few are located in unique environments in which they trap absorbed energy and initiate photochemical activity. These traps are the reaction centres of PS I and PS II and are referred to as P7QQ and P g respectively because of their absorption maxima. P,jo contains either a single or an aggregation of two chlorophyll a molecules in association with a specific protein. Pgg is similarly a monomer or dimer of chlorophyll a but is associated with at least two proteins. 

LIFETIME STUDIES BY PHASE FLUORIMETRY IN ISOUITED LIGHT-HARVESTING COMPLEXES(LHC) d p ndance on the aggregation state ... 

Horton P., Ruban, A.V., Rees D., A. Pascal, Noctor, G.D., and Young, A.J. 1991. Control of the light-harvesting function of chloroplast membranes by the proton concentration in the thylakoid lumen aggregation states of the LHCII complex and the role of zeaxanthin. FEBS Lett. 292 1-4. 

A. Imaging Aggregates oe the Green Plant Light-Harvesting Pigment-Protein Complex LHCM... 

FIGURE 4.5 Aggregates of light-harvesting pigment-protein complex (LHCll) imaged with (a) MPF, (h) SHG, and (c) THG contrasts. The scale har is 3 pm. 

Simidjiev, L, Barzda, V., Mustardy, L., and Garab, G. 1997. Isolation of lamellar aggregates of the light-harvesting chlorophyll a/b protein complex of photosystem II with long-range chiral order and structural flexibility. Anal. Biochem. 250 169-75. 

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