Title
Evidence Of Functional Protein Dynamics From X-Ray Crystallographic Ensembles
Abstract
It is widely recognized that representing a protein as a single static conformation is inadequate to describe the dynamics essential to the performance of its biological function. We contrast the amino acid displacements below and above the protein dynamical transition temperature, T-D similar to 215K, of hen egg white lysozyme using X-ray crystallography ensembles that are analyzed by molecular dynamics simulations as a function of temperature. We show that measuring structural variations across an ensemble of X-ray derived models captures the activation of conformational states that are of functional importance just above T-D, and they remain virtually identical to structural motions measured at 300K. Our results highlight the ability to observe functional structural variations across an ensemble of X-ray crystallographic data, and that residue fluctuations measured in MD simulations at room temperature are in quantitative agreement with the experimental observable.
Year
DOI
Venue
2010
10.1371/journal.pcbi.1000911
PLOS COMPUTATIONAL BIOLOGY
Field
DocType
Volume
Transition temperature,Crystallography,X-ray crystallography,Observable,Biology,Protein dynamics,Crystal,Crystal structure,Molecular dynamics,Protein structure
Journal
6
Issue
ISSN
Citations 
8
1553-734X
1
PageRank 
References 
Authors
0.44
0
5
Name
Order
Citations
PageRank
Jonathan E. Kohn110.44
Pavel V. Afonine210.44
Jory Z. Ruscio310.78
Paul D. Adams4112.85
Teresa Head-Gordon5276.25