Circular dichroism spectrum of poly-L-proline

The Circular Dichroism Spectrum Andstructure of Unordered Polypeptides Andproteins

The evidence bearing on our revision of the early assignment of the circular dichroism spectrum of the maximally unordered polypeptide chain is reviewed. Our initial, as well as subsequent, studies are believed to support the proposed revision in assignment. This conclusion need not be modified in the light of recent work on water-soluble, non-ionizable polymers.

Redetermination of poly[μ-chlorido-hepta­chlorido-μ3-l-proline-μ2-l-proline-tetra­mercury(II)]

The asymmetric unit of the title compound, [Hg(4)Cl(8)(C(5)H(9)NO(2))(2)](n), consists of four HgCl(2) units and two L-proline ligands in the zwitterionic form. In each HgCl(2) unit, the Hg(II) ion is strongly bonded to two Cl atoms, and the Hg(II) ions in two of the HgCl(2) units are chelated by O atoms of two l-proline ligands, with one strong and one weak Hg-O bond. In the crystal structure,...

Circular Dichroism of Protein

Toroidal Circular Dichroism

T. A. Raybould,1, ⇤ V. A. Fedotov,1 N. Papasimakis,1 I. Kuprov,2 I. J. Youngs,3 W. T. Chen,4, † D. P. Tsai,4, 5 and N. I. Zheludev1, 6 Optoelectronics Research Centre, University of Southampton, SO17 1BJ, United Kingdom School of Chemistry, University of Southampton, SO17 1BJ, United Kingdom DSTL, Salisbury, United Kingdom Department of Physics, National Taiwan University, Taipei, 10617, Taiwan...

Circular dichroism: electronic

First-principles calculations of electronic circular dichroism (ECD) are widely used to determine absolute configurations of chiral molecules. In addition, ECD is a sensitive probe for the three-dimensional molecular structure, making ECD calculations a useful tool to study conformational changes. In this review, we explain the origin of ECD and optical activity using response theory. While the...