Abstract
The pigment-protein complexes enriched with Photosystem I (PPC-I) and Photosystem II (PPC-II) were obtained using sievorptive chromatography on DEAE-Sephadex column. Both types of complexes contain Chlorophyll a, β-carotene and minor quantities of Chl b. Red absorbance maxima are located at 676 nm and 673 nm for PPC-I and PPC-II, respectively. The degrees of reaction centre enrichment were measured by the method of differential spectrophotometry: PPC-I has one P-700 per 35 bulk Chl a molecules, PPC-II contains one P-680 per 18 bulk Chl a molecules. The yield of PPC-II is 7–10 times lower than that of PPC-I. After one chromatographic procedure the amount of P-680 in PPC-I preparation does not exceed 7% of that of P-700, the amount of P-700 in PPC-II preparation 2% of that of P-680. The product of PPC-II degradation was studied.
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