A COMPARISON OF PHYCOCYANINS FROM THREE DIFFERENT SPECIES OF CYANOBACTERIA EMPLOYING RESONANCE-ENHANCED COHERENT ANTI-STOKES RAMAN SPECTROSCOPY |
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| Authors: | S Schneider C-J Prenzel G Brehm P Gedeck P S Maruthi Sai L Gottschalk H Scheer |
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| Institution: | Institut für Physikalische und Theoretische Chemie, Univ. Erlangen, Egerlandstr. 3, W-8520 Erlangen, Germany;department of Biochemistry, University of Delhi, South Campus, Benito Juarez Road, New Delhi 110021, India;Botanisches Institut der Ludwig-Maximilians-Universitat, Menzingerstr. 67, W-8000 Muchen 19, Germany |
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| Abstract: | Resonance-enhanced coherent anti-Stokes Raman spectra are recorded for monomers and trimers of phycocyanin from three different cyanobacteria: Westiellopsis prolifica, Mastigocladus laminosus and Spirulina platensis. It is shown that upon aggregation from monomer to trimer the electronic structures of both the α84 and β84 chromophores are changed. The spectra of the trimers originating from S. platensis and M. laminosus are very similar to each other, but distinctly different from the spectrum of W. prolifica. |
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