Dynamical disorder and reorientation of the CH3 groups in N-methylacetamide

S. Rols; H. N. Bordallo; K. W. Herwig; M. Barthès

doi:10.1016/j.physb.2004.03.157

Dynamical disorder and reorientation of the CH₃ groups in N-methylacetamide

S. Rols, H. N. Bordallo, K. W. Herwig, M. Barthès

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

By selective deuteration the influence of the environment on the geometry of the motion of each hydrogen group in N-methylacetamide (NMA, CH ₃NHCOCH₃) was probed using quasi-elastic neutron scattering. From 100 K to ambient very good agreement was obtained over the entire Q-range (0.35-2.35Å), by fitting the data to a uniaxial rotational model of the methyl groups around the C₃-axis.

Original language	English
Pages (from-to)	e587-e589
Journal	Physica B: Physics of Condensed Matter
Volume	350
Issue number	1-3 SUPPL. 1
DOIs	https://doi.org/10.1016/j.physb.2004.03.157
State	Published - Jul 15 2004
Externally published	Yes

Funding

This work has benefited from the use of IPNS at ANL, funded by the US DOE Contract No. W-31-109-Eng-38. KWH wishes to thank the support of the US DOE under Contract No. DE-AC05-960R22464.

Funders	Funder number
U.S. Department of Energy	DE-AC05-960R22464, W-31-109-Eng-38

Keywords

Alpha-helical proteins
Polypeptides
Simplest model system

Access to Document

10.1016/j.physb.2004.03.157

Cite this

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abstract = "By selective deuteration the influence of the environment on the geometry of the motion of each hydrogen group in N-methylacetamide (NMA, CH 3NHCOCH3) was probed using quasi-elastic neutron scattering. From 100 K to ambient very good agreement was obtained over the entire Q-range (0.35-2.35{\AA}), by fitting the data to a uniaxial rotational model of the methyl groups around the C3-axis.",

keywords = "Alpha-helical proteins, Polypeptides, Simplest model system",

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AU - Bordallo, H. N.

AU - Herwig, K. W.

AU - Barthès, M.

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AB - By selective deuteration the influence of the environment on the geometry of the motion of each hydrogen group in N-methylacetamide (NMA, CH 3NHCOCH3) was probed using quasi-elastic neutron scattering. From 100 K to ambient very good agreement was obtained over the entire Q-range (0.35-2.35Å), by fitting the data to a uniaxial rotational model of the methyl groups around the C3-axis.

KW - Alpha-helical proteins

KW - Polypeptides

KW - Simplest model system

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