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'Light Harvesting Complex' in keywords Facet   Publication Year 2001  [X]
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2001[X]
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