A Theory of Optical Anisotropy Decay in Membranes

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概要

• 論文の詳細を見る

• The theory of optical anisotropy decay rat) for a protein in a membrane suspensionis developed. Our new model describes rotational diffusion of membrane anchoredproteins consisting of two different modes occurring simultaneously: one is restrictedwobbling of the whole or part of the protein molecule, and the other is rotation of thewhole protein about a fixed axis. The anisotropy decay rat) is characterized by a diffusion coefficient, a cone angle and an angle between the symmetric axis of the wobblingpart of the protein and the optical moment of the probe fixed rigidly in the protein.Although the exact r(t) consists of infinite number of exponential functions, an ac-curate monoexponential plus constant approximation for r(t) is shown to besufficient for the analysis of experimental data. We derived an analytic expression forthe effective relaxation time which appears in this approximation. This treatment maybe applicable to complex wobbling plus axial rotation of membrane anchored pro-teins such as cytochrome b,.

• 1990-07-15

著者

• Kawato Suguru

  Institute Of Physics College Of Arts And Sciences The University Of Tokyo At Komaba

• Komura Shigeyuki

  Institute Of Physics College Of Arts And Sciences University Of Tokyo

• Ohta Yoshihiro

  Institute Of Physics College Of Arts And Sciences The University Of Tokyo At Komaba

• Ohta Yoshihiro

  Institute Of Physics College Of Arts And Sciences University Of Tokyo

関連論文

• CYTOCHROME P-450 CONTAINING PROTEIN-PROTEIN INTERACTIONS IN BOVINE ADRENOCORTICAL MITOCHONDRIA
• A Theory of Optical Anisotropy Decay in Membranes
• Sound Attenuation in a One-Dimensional Periodic Inhomogeneous Medium
• Protein rotation study of cytochrome P-450 in submitochondrial particles: Effect of KCl and intermolecular interactions with redox partners.

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