Sub-micron scale distribution of electron transport compelxes in bacterial membranes, and its influence on electron transfer pathways
Sub-micron scale distribution of electron transport compelxes in bacterial membranes, and its influence on electron transfer pathways
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细菌膜中电子传递复合物的亚微米尺度分布及其对电子传递途径的影响
DOI：
10.1016/j.bbabio.2012.06.394
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Mullineaux C
中科院分区：
文献类型：
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作者：
Mullineaux C
由Elsevier-Publisher连接器和双向氢酶[4]提供。虽然荧光显微镜的分辨率相对较低，但它确实给出了膜中电子传输复合体的更大范围的分布和动力学的非常准确的、可量化的图像。我们所有研究的一个共同主题是，生物能膜在亚微米尺度上是非均质的，复合体通常聚集在直径约100-200 nm的区域中。这种分布对电子转移路径有很大的影响。在聚球藻7942中，呼吸复合体在类囊体膜上的分布在30-60分钟的时间尺度上被调节。以响应接近质醌的电子载体的氧化还原状态的变化。络合物分布的变化与电子传输途径的重大变化有关[3]。在集胞藻6803中，突变研究表明，只有当氢酶位于类囊体膜上的特定区域时，光合作用才能向双向氢酶传递电子[4]。
provided by Elsevier-Publisher Connector and the bidirectional hydrogenase [4]. Although the resolution of fluorescence microscopy is relatively low, it does give a very accurate, quantifiable picture of the larger-scale distribution and dynamics of electron transport complexes in the membrane. A common theme from all our studies is that bioenergetic membranes are heterogeneous on sub-micron scales, with complexes often clustered in domains around 100-200 nm in diameter. This distribution can have a strong influence on electron transfer pathways. In Synechococcus 7942, the distribution of respiratory complexes in the thylakoid membranes is regulated on a timescale of 30-60 min. in response to changes in the redox state of an electron carrier close to plastoquinone. Changes in distribution of complexes are associated with major changes in pathways of electron of transport [3]. In Synechocystis 6803, mutant studies suggest that photosynthetic electron transfer to the bidirectional hydrogenase can only occur when the hydrogenase is located in specific zones in the thylakoid membranes [4].
通过氧化还原调节的呼吸复合物的重新分布来控制电子传输途径
DOI：
10.1016/j.bbabio.2012.06.366
发表时间：
2012
期刊：
Biochimica et Biophysica Acta (BBA) - Bioenergetics
影响因子：
--
作者：
Liu L
通讯作者：
Liu L