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Molecular reaction mechanisms of proteins monitored by time-resolved FTIR-spectroscopy.

机译:通过时间分辨FTIR光谱监测的蛋白质分子反应机理。

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Time-resolved FTIR difference spectroscopy can provide a valuable insight into the molecular reaction mechanisms of proteins, especially membrane proteins. Isotopic labeling and site-directed mutagenesis allows an unequivocal assignment of IR absorption bands. Studies are presented which give insight into the proton pump mechanisms of proteins, especially bacteriorhodopsin. H-bonded network proton transfer via internal water molecules seems to be a general feature in proteins, also found in cytochrome c oxidase. Using caged GTP the intrinsic and GAP catalyzed GTPase activity of H-ras p21 is studied. Furthermore, protein folding reactions can be recorded with ns time-resolution.
机译:时间分辨的FTIR差异光谱可以为蛋白质,尤其是膜蛋白质的分子反应机理提供有价值的见解。同位素标记和定点诱变可以明确分配IR吸收带。提出的研究使人们深入了解蛋白质,尤其是细菌视紫红质的质子泵机制。经由内部水分子的H键网络质子转移似乎是蛋白质的普遍特征,也存在于细胞色素C氧化酶中。使用笼状GTP,研究了H-ras p21的内在和GAP催化的GTPase活性。此外,蛋白质折叠反应可以以ns时间分辨率记录。

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