Parak F, Goldanskii V I, Mössbauer R L, Gaubman E E, Engelmann H, Suzdalev I P
Z Naturforsch C Biosci. 1982 Jan-Feb;37(1-2):57-62. doi: 10.1515/znc-1982-1-211.
This paper reports Rayleigh scattering experiments on metmyoglobin crystals and freeze dried myoglobin which was exposed to air with different parital pressure of water vapor. While dry myoglobin shows no fluctuations between conformational substates such "breathing modes" are rarely seen in water covered myoglobin. Larger amounts of water increase the average mean square displacements. In crystals the dynamic behaviour is hindered by the crystal packing. The results are analysed by a theory describing the motion within the molecule by a Langevin equation with restoring forces corresponding to a square well potential.
本文报道了对高铁肌红蛋白晶体以及暴露于不同水蒸气分压空气中的冻干肌红蛋白进行的瑞利散射实验。干燥的肌红蛋白在构象亚态之间未显示出波动，而在被水覆盖的肌红蛋白中很少见到这种“呼吸模式”。大量的水会增加平均均方位移。在晶体中，动态行为受到晶体堆积的阻碍。通过一个理论对结果进行了分析，该理论用一个带有与方阱势对应的恢复力的朗之万方程来描述分子内的运动。
