TELP理论:阐明Rieger等人2021在线粒体中的主要观察结果

James Weifu Lee
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摘要

跨膜静电定域质子(TELP)理论可能代表了对米切尔化学渗透理论的补充发展。两者结合在一起,现在可以很好地解释线粒体中的能量学。我计算的过量质子和过量氢氧化物之间的跨膜吸引力解释了TELP如何留在液膜界面的1-nm薄层内。因此,任何距离膜表面至少2–3 nm的pH传感器(sEcGFP)都无法看到TELP。根据TELP模型预测的这一特征在Rieger等人2021的实验中得到了准确的观察。与他们认为的“在OXPHOS条件下,ATP合酶的Δp几乎可以忽略不计”相反,我发现,当TELP活性包括在能量计算中时,有大量的总质子吉布斯自由能(ΔGT)远高于−24.5 kJ mol−1的生理学要求值,以通过FoF1 ATP合酶驱动ATP合成。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
TELP theory: Elucidating the major observations of Rieger et al. 2021 in mitochondria

The transmembrane-electrostatically localized protons (TELP) theory may represent a complementary development to Mitchell's chemiosmotic theory. The combination of the two together can now excellently explain the energetics in mitochondria. My calculated transmembrane-attractive force between an excess proton and an excess hydroxide explains how TELP may stay within a 1-nm thin layer at the liquid-membrane interface. Consequently, any pH sensor (sEcGFP) located at least 2–3 nm away from the membrane surface will not be able to see TELP. This feature as predicted from the TELP model was observed exactly in the experiment of Rieger et al., 2021. In contrast to their belief “the Δp at ATP synthase is almost negligible under OXPHOS conditions”, I find, when TELP activity is included in the energy calculations, there is plenty of total protonic Gibbs free energy (ΔGT) well above the physiologically required value of −24.5 kJ mol−1 to drive ATP synthesis through FoF1-ATP synthase.

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