Concentration Dependence of Brownian Motion and the Viscosity of Hemoglobin Solutions
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概要
- 論文の詳細を見る
Brownian rotational and translational motion of hemoglobin molecules and the viscosity of concentrated hemoglobin solutions are quantitatively described by modified hydrodynamics commonly applied to suspensions of macroscopic hard spherical particles. The modified hydrodynamic forms, including explicitly the volume fraction of the hydration shell, a crowding factor, and Einstein's coefficient, are found to reproduce well the concentration dependence of the kinetic parameters, such as the viscosity, protein rotational correlation time, and diffusion coefficient, for protein volume fractions from 0 to 0.34. It is also found that the apparent volume fraction of the hydration shell decreases with increasing protein volume fraction for protein volume fractions above 0.34, where the viscosity of the hemoglobin solution exceeds 0.1 Pa s, indicating that the viscosity of the hydration shell ranges from 0.1 Pa s to about 1 Pa s (300 ps–3 ns in NMR correlation time).
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 1997-06-15
著者
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Okuda Yuichi
Department Of Applied Physics Faculty Of Science Tokyo Institute Of Technology
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Iino Masaaki
Department Of Applied Physics Tokyo University Of Agriculture And Technology:(present Address)instit
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Okuda Yuichi
Department of Applied Physics, Tokyo Institute of Technology, O-Okayama, Meguro-ku, Tokyo 152, Japan
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Iino Masaaki
Department of Physiology I, Nippon Medical School, Sendagi, Bunkyo-ku, Tokyo 113, Japan
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