{"title":"g -肌动蛋白的介电色散","authors":"Akira Minakata","doi":"10.1016/0926-6585(66)90014-8","DOIUrl":null,"url":null,"abstract":"<div><p>The dielectric dispersion of G-actin has been measured and the value of its dipole moment at neutral pH in a salt-free solution was estimated to be about 660 Debye. The dependence of the dielectric properties on protein concentration, pH and solvent viscosity, and the effect of urea denaturation were examined.</p><p>The results suggest that the main mechanism of dielectric relaxation is the orientation of the permanent dipole, while the proton fluctuation makes a considerable contribution to the dielectric increment.</p></div>","PeriodicalId":100158,"journal":{"name":"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis","volume":"126 3","pages":"Pages 570-577"},"PeriodicalIF":0.0000,"publicationDate":"1966-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0926-6585(66)90014-8","citationCount":"10","resultStr":"{\"title\":\"Dielectric dispersion of G-actin\",\"authors\":\"Akira Minakata\",\"doi\":\"10.1016/0926-6585(66)90014-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The dielectric dispersion of G-actin has been measured and the value of its dipole moment at neutral pH in a salt-free solution was estimated to be about 660 Debye. The dependence of the dielectric properties on protein concentration, pH and solvent viscosity, and the effect of urea denaturation were examined.</p><p>The results suggest that the main mechanism of dielectric relaxation is the orientation of the permanent dipole, while the proton fluctuation makes a considerable contribution to the dielectric increment.</p></div>\",\"PeriodicalId\":100158,\"journal\":{\"name\":\"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis\",\"volume\":\"126 3\",\"pages\":\"Pages 570-577\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1966-11-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0926-6585(66)90014-8\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0926658566900148\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochimica et Biophysica Acta (BBA) - Biophysics including Photosynthesis","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0926658566900148","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The dielectric dispersion of G-actin has been measured and the value of its dipole moment at neutral pH in a salt-free solution was estimated to be about 660 Debye. The dependence of the dielectric properties on protein concentration, pH and solvent viscosity, and the effect of urea denaturation were examined.
The results suggest that the main mechanism of dielectric relaxation is the orientation of the permanent dipole, while the proton fluctuation makes a considerable contribution to the dielectric increment.
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