Intramolecular low-frequency vibrations in lysozyme by neutron time-of-flight spectroscopy
✍ Scribed by H. D. Bartunik; P. Jollès; J. Berthou; A. J. Dianoux
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1982
- Tongue
- English
- Weight
- 436 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
High‐resolution neutron time‐of‐flight (TOF) spectra were measured for partly deuterated hen egg‐white lysozyme in solution with and without N‐acetyl‐glucosamine inhibitor bound to the cleft, and in polycrystalline form. Weak but reproducible bands occur at frequencies between 25 and 375 cm^−1^. The bands were tentatively assigned on the basis of previous results for homopolypeptides. At very small energy transfers (between about 1 cm^−1^ and 40 cm^−1^), the TOF spectra show a dependence both on inhibitor binding and crystalline environment. This is interpreted in terms of conformational flexibility.