Impact of anisotropic atomic motions in proteins on powder-averaged incoherent neutron scattering intensities.
J Chem Phys
; 137(22): 225101, 2012 Dec 14.
Article
em En
| MEDLINE
| ID: mdl-23249033
ABSTRACT
This paper addresses the question to which extent anisotropic atomic motions in proteins impact angular-averaged incoherent neutron scattering intensities, which are typically recorded for powder samples. For this purpose, the relevant correlation functions are represented as multipole series in which each term corresponds to a different degree of intrinsic motional anisotropy. The approach is illustrated by a simple analytical model and by a simulation-based example for lysozyme, considering in both cases the elastic incoherent structure factor. The second example shows that the motional anisotropy of the protein atoms is considerable and contributes significantly to the scattering intensity.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas
/
Difração de Nêutrons
/
Movimento
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
J Chem Phys
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
França