文章基本信息

标题：Structural origins of diamagnetic anisotropy in proteins
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作者：D L Worcester
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：1978
卷号：75
期号：11
页码：5475-5477
DOI：10.1073/pnas.75.11.5475
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Magnetic anisotropy in proteins and polypeptides can be attributed to the diamagnetic anisotropy of the planar peptide bonds. The alpha helix in particular has large anisotropy due to the axial alignment of the peptide bonds. The regular arrangements of the peptide bonds in beta pleated sheet and collagen structures also produce substantial anisotropy, but less than for alpha helix. The anisotropy permits orientation of small structures of these types in magnetic fields of several kilogauss.