ACTIVATION-ENERGIES AND ENTHALPIES DURING CA2+ TRANSPORT IN RAT-LIVER MITOCHONDRIA
ACTIVATION-ENERGIES AND ENTHALPIES DURING CA2+ TRANSPORT IN RAT-LIVER MITOCHONDRIA
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DOI：
10.1016/0014-5793(79)80849-2
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发表时间：
1979-01-01
期刊：
影响因子：
3.5
通讯作者：
AZZONE, GF
中科院分区：
文献类型：
--
作者：
BRAGADIN, M;POZZAN, T;AZZONE, GF
虽然人们普遍认为帽运输取决于一个特定的二价阳离子载体的操作，很少有人知道的载体的分子特性。Hutson [I]试图通过研究温度对帽运输的影响来区分移动的载体和孔机制。观察到Arabius图的一个突变。大肠杆菌中，主动转运显示的Arrhenius图，在脂质经历从无序到有序状态的转变的温度以下，相对于转变以上的温度，斜率更陡[2-41.据报道，阿克里尼乌斯图也是三相的，在较低温度下斜率再次变得不那么陡[4]。
Although there is general agreement that Cap transport depends on the operation of a specific divalent cation carrier, very little is known about the molecular properties of the carrier. Hutson [I] has tried to distinguish between a mobile carrier and a pore mechanism by studying the effect of temperature on Cap transport. A break in the Arrhenius plot has been observed.In membrane vesicles from E. coli, the Arrhenius plots for active transport display, below the temperature at which lipids undergo transition from the disordered to the ordered state, a slope which is steeper with respect to the temperature above the transition [2-41. Arrhenius plots have also been reported to be triphasic with the slope becoming again less steep at the lower temperature [4].