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ON INDUCED PHOTOCHROMISM OF THE C‐PHYCOCYANIN CHROMOPHORE: THE ZINC COMPLEX IN MICELLES *
Author(s) -
Kok Jacob De
Publication year - 1985
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1985.tb01628.x
Subject(s) - chromophore , photochromism , photoisomerization , chemistry , photochemistry , zinc , micelle , cationic polymerization , phycocyanin , urea , denaturation (fissile materials) , polymer chemistry , organic chemistry , aqueous solution , nuclear chemistry , isomerization , catalysis , cyanobacteria , biology , bacteria , genetics
— Absorption spectra of the chromophore of C‐phycocyanin, in its free base form and as its zinc complex, were measured after denaturation with 8 M urea and with a cationic detergent. An acidic and an alkaline form of the zinc complex are distinguished. The acidic form shows photoreversible photochrom‐ism, but only when it is embedded in detergent micelles. The photochromism is tentatively ascribed to a direct photoisomerization of the chromophore.