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马脾铁蛋白整体铁核的磷酸盐与铁组成比是1:8±0.5,而表层组成比却是1:3±0.2,在pH7～10内,铁蛋白随着pH值递增,它以65±5磷原子/蛋白分子/pH速率释放无机磷酸盐和185±5铁原子/蛋白分子/pH速率释放铁,其磷酸盐与铁释放分子比也是1:3±0.5,推测这一过程是发生于铁核表层组成的变化,随着体系pH增加,氢氧根离子参与铁蛋白铁核组成,取代铁核表层某些磷铁成份,构成新的铁核表层组成,使铁蛋白氧化还原中间电位以-115mV/pH速率向负线性漂移。
The ratio of phosphate to iron in the whole iron nucleus of horse spleen ferritin is 1: 8 ± 0.5, while the surface composition ratio is 1: 3 ± 0.2. Within the pH range of 7 to 10, the ferritin increases with the pH value by 65 Iron is released at a rate of ± 5 P atoms / protein molecule / pH and an iron release rate of 185 ± 5 Fe atoms / protein molecule / pH, with a phosphate to iron release ratio of 1: 3 ± 0.5, presumably due to this process With the increase of system pH, the hydroxyl ions participate in the ferritin iron core composition, and replace some of the iron phosphorus in the surface of the iron core to form a new iron core surface composition, so that the ferritin redox intermediate potential Drift to negative linearity at -115 mV / pH.