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Concentration-independent estimation of protein secondary structure by circular dichroism: a comparison of methods.

Analytical Biochemistry(2008)

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摘要
Estimation of a protein’s secondary structure from its circular dichroism spectrum usually requires accurate knowledge of the concentration and pathlength of the sample. Two recently described methods avoid this problem by analysis of g-factor spectra (McPhie, Anal. Biochem. 293, 109–119) or scaling of relative intensities (Raussens et al., Anal. Biochem. 319, 114–121). Application of the two methods to the same samples shows that they can have similar efficacies. Calculation with the latter method is more rapid, but the performance of the former is maintained over reduced wavelength ranges.
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关键词
spectrum,proteins,circular dichroism,secondary structure,protein secondary structure
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