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Light-induced conformational changes of protein receptors probed by difference mid-IR microspectroscopy

机译:差中红外显微技术探测光诱导的蛋白受体的构象变化

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We apply mid-infrared absorption microspectroscopy to investigate the light-induced conformational changes of bacteriorhodopsin embedded in native purple membranes deposited on gold substrates. The difference spectra (visible light ON-visible light OFF) obtained on thin films of bacteriorhodopsin display main spectral features connected to the light-induced proton pump process, representing a promising preliminary step towards the investigation of light-sensitive proteins by means of mid-IR tip-enhanced nanospectroscopy.
机译:我们应用中红外吸收光谱法研究细菌视紫红质在金基底上沉积的天然紫色膜中埋藏的光诱导构象变化。在细菌视紫红质薄膜上获得的差异光谱(可见光开-可见光关)显示出与光诱导质子泵过程有关的主要光谱特征,代表着通过中途研究光敏蛋白的有希望的初步步骤红外尖端增强纳米光谱。

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