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In order to develop methods of analysis applicable to the determination of the conformation of biological polymers in solution, a series of proline derivatives was studied. The steric constraints of the pyrrolidine ring limit these compounds to a relatively small set of conformations. This set...
The approximations in the equation relating the viscosity of partially helical molecules to the cooperativity of the helix–random coil transition are investigated. Of the several approximations considered, only the neglect of long‐range intramolecular interactions in the random coil leads to...
The coupling of theoretical optical calculations with experimental data provides a check of the validity of the theory or provides conformational information. The theory was validated by studies in which the approximate conformation was located independently. These studies have shown that a...
The Raman spectra have been obtained of di‐, tri‐, tetra‐, penta‐, and hexa‐L‐alanine in the solid state. Raman spectra of the dimer and trimer in aqueous solution are also reported. The oligomers of alanine exist as zwitterions in the solid state and aqueous solution. Spectral...
A computer program, based upon the method of Trautman, has been developed to calculate density‐gradient proportionality constants, β0, as a function of density for any salt for which density and activity coefficient data are available. Results are given for twenty 1:1 electrolytes at 25°C....
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