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- W2000943670 abstract "Abstract 1. 1. When studying the interactions of chlorophylla molecules in solutions of poly L -benzylglutamate (mol. wt. 20 000, 70 000 and 420 000)-pyridine, we have observed a modification of the pigment depending on time and on the molar concentration of the polypeptide. A similar result was obtained when replacing the polypeptide by the monomer, by n-octylamine and by triethylamine. Our conclusion is that the phenomenon was caused by the amine group. The possibility of aminolysis was excluded under experimental conditions. 2. 2. We have isolated two products by adsorption chromatography, the visible and infrared spectra of which correspond to oxidation derivatives: the 10-hydroxychlorophyll a and the 10-hydroxylactone of chlorophyll a as the major product. 3. 3. Kinetics showed a clearly delayed evolution when the amine group of the polypeptide was acetylated and when the sample was protected from atmospheric oxygen. 4. 4. The experiments give information on the reactivity of end groups of these polypeptides." @default.
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- W2000943670 date "1970-10-01" @default.
- W2000943670 modified "2023-09-26" @default.
- W2000943670 title "Modifications de la chlorophylle a en presence de polypeptides et d'amines" @default.
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- W2000943670 doi "https://doi.org/10.1016/0304-4165(70)90363-6" @default.
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