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arXiv 0903.0184q-bio.BMq-bio.QM
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FoF1-ATP合酶中质子驱动C环旋转的36度步长

36 degree step size of proton-driven c-ring rotation in FoF1-ATP synthase

Monika G. Dueser, Nawid Zarrabi, Daniel J. Cipriano, Stefan Ernst, Gary D. Glick, Stanley D. Dunn, Michael Boersch

摘要:

生物“能量货币分子”三磷酸腺苷ATP的合成是由FoF 1-ATP合成酶完成的。在大肠杆菌的质膜中,Fo马达中的10个c亚基的环的质子驱动旋转为F1马达中的催化提供动力。虽然F1使用120度步进,但Fo模型预测c亚基每次步进旋转36度,这在这里通过单分子荧光共振能量转移证明。

英文摘要:

Synthesis of the biological "energy currency molecule" adenosine triphosphate ATP is accomplished by FoF1-ATP synthase. In the plasma membrane of Escherichia coli, proton-driven rotation of a ring of 10 c subunits in the Fo motor powers catalysis in the F1 motor. While F1 uses 120 degree stepping, Fo models predict a step-by-step rotation of c subunits 36 degree at a time, which is here demonstrated by single-molecule fluorescence resonance energy transfer.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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