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'Light Harvesting complex' in keywords Facet   section ZfN Section C  [X]
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2001 (1)
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1993 (1)
1Author    Andre BucheRequires cookie*
 Title    Wavelength Shifts Correlation between Near Infrared and Ultraviolet Regions of the LHII Bacteriochlorophyll Spectrum from Ectothiorhodospira sp  
 Abstract    Bacteriochlorophyll a has a maximum at 258 nm previously related to the ring E ester system interacting with the Ji-system of the macrocycle. In this work, we compared the effect o f lauryldimethylamine-N-oxide (LD AO) and alkaline pH on both the near infrared and the ultraviolet region of the LHII spectrum from E ctothiorhodospira sp. While LDAO induces only a shift of the 850 nm band arising from the Q y transition of the bacteriochlorophyll a, alkaline pH also causes a concomitant and reversible 10-nm shift from 258 to 248 nm. Both shifts have similar apparent pKs (12.3 and 12.6, respectively). Interestingly, the presence of NaCl reduces these pKs values to 11.4 and 11.7. 
  Reference    Z. Naturforsch. 56c, 363 (2001); received D ecem ber 11 2000/January 23 2001 
  Published    2001 
  Keywords    Bacteriochlorophyll, Ectothiorhodospira, Light-Harvesting Complex 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-0363.pdf 
 Identifier    ZNC-2001-56c-0363 
 Volume    56 
2Author    M. Onika, Meyer, Christian WilhelmRequires cookie*
 Title    Reconstitution of Light-Harvesting Complexes from Chlorella fusca (Chlorophyceae) and Mantoniella squamata (Prasinophyceae)  
 Abstract    D edicated to Professor W. Rüdiger (München) on the occasion o f his 60 th anniversary Reconstitution experiments o f light-harvesting complexes were performed with the green alga Chlorella fusca and the chlorophyll c-eontaining prasinophyte M antoniella squamata using a modified method according to Plumley and Schmidt [Proc. N atl. Acad. Sei. U .S.A . 84, 146 -1 5 0 (1987)]. Changing the pigment supply quantitatively or qualitatively in the reconsti­ tution mixture hom ologous and heterologous reconstitutes were obtained. In contrast to higher plants, light-harvesting polypeptides from green algae are able to bind the chlorophylls as well as the xanthophylls in different stoichiometries. H eterologous reconstitutes o f M . squamata polypeptides give further evidence for a rather high flexibility o f pigment recog­ nition and binding. This is the first report o f successful reconstitution o f a chlorophyll c-binding protein. Contrary to chlorophyll c-less light-harvesting com plexes, the reconstitu­ tion o f M . squamata is strongly pH-controlled. In summary, the results give evidence for a high specificity o f porphyrin ring recognition and variability in xanthophyll binding capacity. Therefore, it is suggested that at least in algal light-harvesting proteins chlorophyll organiza­ tion may be determined by other mechanisms than xanthophyll binding. 
  Reference    Z. Naturforsch. 48c, 461 (1993); received December 12 1992/April 1 1993 
  Published    1993 
  Keywords    Algae, Reconstitution, Light-Harvesting Complex, Photosynthesis, Pigment-Protein Inter­ action 
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 TEI-XML for    default:Reihe_C/48/ZNC-1993-48c-0461.pdf 
 Identifier    ZNC-1993-48c-0461 
 Volume    48 
3Author    A. Nette Gasser, Stefan Raddatz, Alfons Radunz, GeorgH. SchmidRequires cookie*
 Title    Comparative Immunological and Chemical Analysis of Lipids and Carotenoids of the D l-Peptide and of the Light-Harvesting-Complex of Photosystem II of Nicotiana tabacum  
  Reference    Z. Naturforsch. 54c, 199—208 (1999); received November 11/December 18 1998 
  Published    1999 
  Keywords    Light-Harvesting complex, Dl-Peptide, PS Il-Complex, Lipid-Peptide-Binding, Antibodies 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0199.pdf 
 Identifier    ZNC-1999-54c-0199 
 Volume    54