[Photochemical and spectral properties of photosystem-2 subchloroplast fragments, highly purified from photosystem-1 mixtures]. 1975

N I Shutilova, and V V Klimov, and V A Shuvalov, and V M Kutiurin

A rather simple method of isolation of photosystem 2 fragments, which are highly purified from Photosystem 1 admixture, has been developed on the basis of combined action of detergents and differential centrifugation. The isolated fragments are characterized by insignificant content of P700 (one molecule per 10500 molecules of chlorophyll) and by high ratio of band values at 685 and 735 nm in the low temperature emission spectrum of fluorescence (F685/F735=5.9). The data on photochemical activity and ability for photoinduced changes in fluorescence prove that the activity of Photosystem 2 is retained both at the level of reaction centre operation and at that of water photooxidation with oxygen evolution.

UI MeSH Term Description Entries
D002736 Chloroplasts Plant cell inclusion bodies that contain the photosynthetic pigment CHLOROPHYLL, which is associated with the membrane of THYLAKOIDS. Chloroplasts occur in cells of leaves and young stems of plants. They are also found in some forms of PHYTOPLANKTON such as HAPTOPHYTA; DINOFLAGELLATES; DIATOMS; and CRYPTOPHYTA. Chloroplast,Etioplasts,Etioplast
D005591 Chemical Fractionation Separation of a mixture in successive stages, each stage removing from the mixture some proportion of one of the substances, for example by differential solubility in water-solvent mixtures. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Fractionation, Chemical,Chemical Fractionations,Fractionations, Chemical

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