Probing Protein Structural Dynamics from Residual Dipolar Couplings: De novo determination of protein structure and dynamics from multi-aligning residual dipolar couplings - Couverture souple

Ruan, Ke

 
9783838303895: Probing Protein Structural Dynamics from Residual Dipolar Couplings: De novo determination of protein structure and dynamics from multi-aligning residual dipolar couplings
Couverture souple
ISBN 10 : 383830389X ISBN 13 : 9783838303895
Editeur : LAP LAMBERT Academic Publishing, 2010

Synopsis

Residual dipolar couplings (RDCs) provide explicit information of the molecular structure and dynamics in solution at atomic level. Full utilization of RDC datasets requires the acquisition under multiple aligning conditions, which remains experimentally challenging. We have illustrated in an application to ubiquitin that molecular alignment can be modified by varying the morphological characteristics of a composite medium, composed of ordered bacteriophage Pf1 particles embedded within stretched polyacrylamide gel matrix. The molecular alignment in this composite media could be adjusted by varying the angles between the directors of ordering for the Pf1 and strained gel, or by varying the concentrations of the components or magnesium. Since the acquisition of five independent RDC datasets still remains a difficulty, we develop a protocol that allows for the de novo determination of bond vector orientations from RDC measured in three independent alignment media assuming rigidity. The method proceeds by least squares optimization of both bond orientations and alignment tensors starting from an appropriately chosen initial ‘guess’.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Residual dipolar couplings (RDCs) provide explicit information of the molecular structure and dynamics in solution at atomic level. Full utilization of RDC datasets requires the acquisition under multiple aligning conditions, which remains experimentally challenging. We have illustrated in an application to ubiquitin that molecular alignment can be modified by varying the morphological characteristics of a composite medium, composed of ordered bacteriophage Pf1 particles embedded within stretched polyacrylamide gel matrix. The molecular alignment in this composite media could be adjusted by varying the angles between the directors of ordering for the Pf1 and strained gel, or by varying the concentrations of the components or magnesium. Since the acquisition of five independent RDC datasets still remains a difficulty, we develop a protocol that allows for the de novo determination of bond vector orientations from RDC measured in three independent alignment media assuming rigidity. The method proceeds by least squares optimization of both bond orientations and alignment tensors starting from an appropriately chosen initial ?guess?.

Biographie de l'auteur

Ke Ruan received his B.S. and M.S. from Peking University. He earned his Ph.D. in Chemistry from Johns Hopkins University in 2008, focused on the characterization of protein structural dynamics by residual dipolar couplings. He joined Pfizer thereafter to develop automated structure verification approaches in high throughput NMR system.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
383830389X
ISBN 13 
9783838303895
Reliure
Broché
Nombre de pages
156
Coordonnées du fabricant
non disponible
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