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The reversible photo oxidation of allo phycocyanin and phycocyanin

, : The reversible photo oxidation of allo phycocyanin and phycocyanin. Izvestiya Akademii Nauk SSSR Seriya Biologicheskaya (1): 149-154

Photooxidation of phycobiliprotein (PBP) by air, O2 and quinone in ethylene glycol solutions at C and C was studied in Aphanizomenon flos aquae. Reversible photooxidation changes at C were observed. The dependence of the reversible photooxidation of PBP on the acid-alkaline conditions of the medium, the nature of the oxidized and concentration of ethylene glycol was investigated. A labile oxidized form appeared under the action of light, which, depending on the conditions, may become transformed into the initial pigment or pass into a stable oxidized form. Photooxidation of PBP may be regarded as at least a 2 step process.

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