Structure of α-Keratin

Low angle X-ray diffraction is a powerful means of investigating long range axial order in fibrous protein structures, and α-keratin was one of the earliest materials to be studied by this method 1 . The observed meridional and near-meridional reflexions have been indexed 2–5 as orders of an axial p...

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Bibliographic Details
Published in:Nature (London) 1971-09, Vol.233 (5315), p.138-140
Main Authors: FRASER, R. D. B, MACRAE, T. P
Format: Article
Language:English
Subjects:
Animals
Humanities and Social Sciences
Keratins - chemistry
letter
multidisciplinary
Protein Conformation
Rodentia
Science
Science (multidisciplinary)
X-Ray Diffraction
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Summary:Low angle X-ray diffraction is a powerful means of investigating long range axial order in fibrous protein structures, and α-keratin was one of the earliest materials to be studied by this method 1 . The observed meridional and near-meridional reflexions have been indexed 2–5 as orders of an axial period of 198 Å, but there are indications 6,7 that this might not be correct. This possibility has been investigated using a high resolution focusing X-ray camera 8 to obtain diffraction patterns from several native keratins and from certain heavyatom derivatives of porcupine quill.
ISSN:0028-0836
1476-4687
DOI:10.1038/233138a0