Abstract
Exciton calculations on tubular pigment aggregates similar to recently proposed models for BChl c/d/e antennae in light-harvesting chlorosomes from green photosynthetic bacteria yield electronic absorption spectra that are super-impositions of linear J-aggregate spectra. While the electronic spectroscopy of such antennae differs considerably from that of linear J-aggregates, tubular exciton models (which may be viewed as cross-coupled J-aggregates) may be constructed to yield spectra that resemble that of the BChl c antenna in the green bacterium Chloroflexus aurantiacus. Highly symmetric tubular models yield absorption spectra with dipole strength distributions essentially identical to that of a J-aggregate; strong symmetry-breaking is needed to simulate the absorption spectrum of the BChl c antenna.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Abbreviations
- BChl:
-
bacteriochlorophyll
- [E,M] BChl c S :
-
bacteriochlorophyll c with ethyl and methyl substituents in the 8- and 12-positions, and with stearol as the esterifying alcohol
References
Alden RG, Lin SH and Blankenship RE (1992) Theory of spectroscopy and energy transfer of oligomeric pigments in chlorosome antennas of green photosynthetic bacteria. J Lumin 51: 51–66
Blankenship RE, Brune DC and Wittmershaus BP (1988) Chlorosome antennas in green photosynthetic bacteria. In: Stevens SEJr and Bryant DA (eds) Light Energy Transduction in Photosynthesis: Higher Plant and Bacterial Models, pp 32–64. American Society of Plant Physiologists, Rockville, MD
Blankenship RE, Olson JM and Miller M (1995) Antenna complexes from green photosynthetic bacteria. In: Blankenship RE, Madigan MT and Bauer CE (eds) Anoxygenic Photosynthetic Bacteria, pp 399–431. Kluwer Academic Publishers, Dordrecht
Brune DC, Nozawa T and Blankenship RE (1987) Antenna organization in green photosynthetic bacteria. 1. Oligomeric bacteriochlorophyll c as a model for the 740 nm absorbing bacteriochlorophyll c in Chloroflexus aurantiacus chlorosomes. Biochemistry 26: 8644–8652
Brune DC, King GH and Blankenship RE (1988) Interactions between Bacteriochlorophyll c molecules in oligomers and in chlorosomes of green photosynthetic bacteria. In: Scheer H and Schneider S. (eds) Photosynthetic Light-Harvesting Systems, pp 141–151. Walter de Gruyter, Berlin
Bystrova MI, Mal'gosheva IN and Krasnovskii AA (1979) Study of molecular mechanism of self-assembly of aggregated forms of BChl c. Mol Biol (English Trans) 13: 582–594
Chachisvilis M, Fidder H and Sundström V (1995) Electronic coherence in pseudo two-color pump-probe spectroscopy. Chem Phys Lett 234: 141–150
Chiefari J, Griebenow K, Griebenow N, Balaban TS, Holzwarth AR and Schaffner K (1995) Models for the pigment organization in the chlorosomes of photosynthetic bacteria: Diastereoselective control of in-vitro bacteriochlorophyll cS aggregation. J Phys Chem 99: 1357–1365
Fetisova Z and Mauring K (1992) Experimental evidence of oligomeric organization of antenna bacteriochlorophyll c in green bacterium Chloroflexus aurantiacus by spectral hole burning. FEBS Lett 307: 371–374
Griebenow K, Holzwarth AR, van Mourik F and van Grondelle R (1991) Pigment organization and energy transfer in green bacteria. 2. Circular and linear dichroism spectra of protein-containing and protein-free chlorosomes isolated from Chloroflexus aurantiacus strain Ok-70-fl+. Biochim Biophys Acta 1058: 194–202
Gudowska-Nowak E, Newton MD and Fajer J (1991) Conformational and environmental effects on bacteriochlorophyll optical spectra: correlation of calculated spectra with structural results. J Phys Chem 94: 5795–5801
Holzwarth AR and Schaffner K (1994) On the structure of bacteriochlorophyll molecular aggregates in the chlorosomes of green bacteria. A molecular modeling study. Photosynth Res 41: 225–233
Lin S, van Amerongen H and Struve WS (1991) Ultrafast pumpprobe spectroscopy of bacteriochlorophyll c antennae in bacteriochlorophyll a-containing chlorosomes from the green bacterium Chloroflexus aurantiacus. Biochim Biophys Acta 1060: 13–24
Lu XV and Pearlstein RM (1993) Simulations of Prosthecochloris bacteriochlorophyll a protein optical spectra improved by parametric computer search. Photochem Photobiol 57: 86–91
Lutz M and van Brakel G (1988) Ground-state molecular interactions of bacteriochlorophyll c in chlorosomes of green bacteria and in model systems: A resonance Raman study. In: Olson JM, Ormerod JG, Amesz J, Stackebrandt E and Trüper HG (eds) Green Photosynthetic Bacteria, pp 23–34. Plenum Press, New York
Matsuura K, Hirota M, Shimada K and Mimuro M (1993) Spectral forms and orientation of bacteriochlorophylls c and a in chlorosomes of the green photosynthetic bacterium Chloroflexus aurantiacus. Photochem Photobiol 57: 92–97
Mimuro M, Nozawa T, Tamai N, Shimada K, Yamazaki I, Lin S, Knox RS, Wittmershaus BP, Brune DC and Blankenship RE (1989) Excitation energy flow in chlorosome antennas of green photosynthetic bacteria. J Phys Chem 93: 7503–7509
Nozawa T, Ohtomo K, Suzuki M, Morishita Y and Madigan MT (1993) Structures and organization of bacteriochlorophyll c's in chlorosomes from a new thermophilic bacterium Chlorobium tepidum. Bull Chem Soc Japan 66: 231–237
Nozawa T, Ohtomo K, Suzuki M, Nakagawa H, Shikama Y, Konami H and Wang Z-Y (1994) Structures of chlorosomes and aggregated BChl c in Chlorobium tepidum from solid state high resolution CP/MAS 13C NMR. Photosynth Res 41: 211–223
Savikhin S, Zhu Y, Lin S, Blankenship RE and Struve WS (1994) Femtosecond spectroscopy of chlorosome antennas from the green photosynthetic bacterium Chloroflexus aurantiacus. J Phys Chem 98: 10322–10334
Savikhin S, van Noort PI, Zhu Y, Lin S, Blankenship RE and Struve WS (1995a) Ultrafast energy transfer in light-harvesting chlorosomes from the green photosynthetic bacterium Chlorobium tepidum. Chem Phys 194: 245–258
Savikin S, van Noort PI, Blankenship RE and Struve WS (1995b) Femtosecond probe of structural analogies between chlorosomes and bacteriochlorophyll c aggregates. Biophys J 69: 1100–1104
Somsen O (1995) Excitonic interaction in photosynthesis: migration and spectroscopy PhD Thesis. Free University, Amsterdam
Smith LA Kehres LA and Fajer J (1983) Aggregation of the bacteriochlorophylls c, d, and e. Models for the antenna chlorophylls of green and brown phoosynthetic bacteria. J Am Chem Soc 105: 1387–1389
Staehelin LA, Golecki JR, Fuller RC and Drews G (1978) Visualization of the supramolecular architecture of chlorosomes (Chlorobium type vesicles) in freeze-fractured cells of Chloroflexus aurantiacus. Arch Microbiol 119: 269–277
Struve WS (1989) Fundamentals of Molecular Spectroscopy, pp 267–275. Wiley-Interscience, New York
Tronrud DE, Schmid MR and Matthews BW (1986) Structure and X-ray amino acid sequence of a bacteriochlorophyll a protein from Prosthecochloris aestuarii refined at 1.9 Å resolution. J Mol Biol 188: 443–454
Van Amerongen H, Vasmel H and van Grondelle R (1988) Linear dichroism of chlorosomes from Chloroflexus aurantiacus in compressed gels and electric fields. Biophys J 54: 65–76
Van Noort PI, Francke C, Schoumans N, Otte SCM, Aartsma T and Amesz J (1994) Chlorosomes of green bacteria: Pigment composition and energy transfer. Photosynth Res 41: 193–203
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Buck, D.R., Struve, W.S. Tubular exciton models for BChl c antennae in chlorosomes from green photosynthetic bacteria. Photosynth Res 48, 367–377 (1996). https://doi.org/10.1007/BF00029469
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00029469