期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1972
卷号：69
期号：6
页码：1467-1469
DOI：10.1073/pnas.69.6.1467
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Low-frequency Raman bands (lower than 50 cm-1) exist in certain proteins. They are dependent upon the conformation of the protein molecule, but are relatively independent of the form of the sample, i.e., whether it is a film or a crystal. Low-frequency Raman spectra were obtained from samples of [α]-chymotrypsin that had been prepared in several ways. A peak at about 29 cm-1 was found for all samples except the one that had been denatured with sodium dodecyl sulfate. Such low frequency motions must arise from vibrations that involve all, or very large portions, of the protein molecule.
