Comment on “Improving protein circular dichroism calculations in the far-ultraviolet through reparametrizing the amide chromophore” [J. Chem. Phys. 109, 782 (1998)]

Circular dichroism spectra for 23 proteins have been calculated using transition parameters from experiments on model amides and semiempirical molecular orbital (MO) calculations. The results are substantially better than those reported by Hirst. The improvements result primarily from using distributed dipoles (monopoles), rather than the point dipoles used by Hirst.