Structural origins of diamagnetic anisotropy in proteins.
- 1 November 1978
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 75 (11) , 5475-5477
- https://doi.org/10.1073/pnas.75.11.5475
Abstract
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.This publication has 15 references indexed in Scilit:
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