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1979 (1)
1Author    W. Kufer, H. ScheerRequires cookie*
 Title    Chemical Modification of Biliprotein Chromophores  
 Abstract    The reaction of biliproteins with sodium dithionite has been studied. The reagent is selective towards the chromophores. In denatured phycocyanin from Spirulina platensis, all three chromo­ phores react to form yellow "phycorubin", whereas only 1 /3 of the chromophores react in native phycocyanin in a non-statistical manner. From reversion experiments, it can be shown, that the thermodynamic stability of the chromophores towards reaction with dithionite is increased in the native pigment. Similarly, native phytochrome in its P r form reacts only partially to a pigment ab­ sorbing at both 420 and 660 nm. The same product is formed from native Pfr, indicating both a reversion to Pr and a partial reduction. 
  Reference    Z. Naturforsch. 34c, 776—781 (1979); received July 2 1979 
  Published    1979 
  Keywords    Biliproteins, Phycocyanin, Phytochrome, Chromophore Modification, Dithionite, Reversible De­ naturation 
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 TEI-XML for    default:Reihe_C/34/ZNC-1979-34c-0776.pdf 
 Identifier    ZNC-1979-34c-0776 
 Volume    34