Abstract
In this chapter, the basic phenomenon of circular dichroism (CD) will be described. The central theoretical parameter of rotational strength will then be defined. The mechanisms by which electronic transitions contribute to CD, i.e., acquire rotational strength, will then be discussed qualitatively, after which the methods by which CD is calculated will be described. The most important group in the electronic spectroscopy of proteins, the peptide group, will then be discussed. Finally, theoretical studies of the principal types of peptide secondary structure will be surveyed. The reader should note that aromatic and disulfide groups are not discussed in this chapter, but are covered in a separate chapter (Woody and Dunker, Chapter 4), along with experimental studies of these important protein chromophores.
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Woody, R.W. (1996). Theory of Circular Dichroism of Proteins. In: Fasman, G.D. (eds) Circular Dichroism and the Conformational Analysis of Biomolecules. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-2508-7_2
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