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@ARTICLE{Smolin:20685,
author = {Smolin, N. and Biehl, R. and Kneller, G.B. and Richter, D.
and Smith, J.C.},
title = {{F}unctional domain motions in proteins on the 1 - 100 ns
timescale: {C}omparison of neutron spin echo spectroscopy of
phosphoglycerate kinase with molecular dynamics simulation},
journal = {Biophysical journal},
volume = {102},
issn = {0006-3495},
address = {New York, NY},
publisher = {Rockefeller Univ. Press},
reportid = {PreJuSER-20685},
pages = {1108 - 1117},
year = {2012},
note = {The research was sponsored by the Laboratory Directed
Research and Development Program of Oak Ridge National
Laboratory, managed by UT-Battelle, LLC, for the U.S.
Department of Energy under contract No. DE-AC05-00OR22725.
This research used resources of the National Energy Research
Scientific Computing Center, which is supported by the
Office of Science of the U.S. Department of Energy under
contract No. DE-AC02-05CH11231.},
abstract = {Protein function often requires large-scale domain motion.
An exciting new development in the experimental
characterization of domain motions in proteins is the
application of neutron spin-echo spectroscopy (NSE). NSE
directly probes coherent (i.e., pair correlated) scattering
on the ~1-100 ns timescale. Here, we report on all-atom
molecular-dynamics (MD) simulation of a protein,
phosphoglycerate kinase, from which we calculate small-angle
neutron scattering (SANS) and NSE scattering properties. The
simulation-derived and experimental-solution SANS results
are in excellent agreement. The contributions of
translational and rotational whole-molecule diffusion to the
simulation-derived NSE and potential problems in their
estimation are examined. Principal component analysis
identifies types of domain motion that dominate the internal
motion's contribution to the NSE signal, with the largest
being classic hinge bending. The associated free-energy
profiles are quasiharmonic and the frictional properties
correspond to highly overdamped motion. The amplitudes of
the motions derived by MD are smaller than those derived
from the experimental analysis, and possible reasons for
this difference are discussed. The MD results confirm that a
significant component of the NSE arises from internal
dynamics. They also demonstrate that the combination of NSE
with MD is potentially useful for determining the forms,
potentials of mean force, and time dependence of functional
domain motions in proteins.},
keywords = {Diffusion / Molecular Dynamics Simulation / Movement /
Neutron Diffraction: methods / Phosphoglycerate Kinase:
chemistry / Phosphoglycerate Kinase: metabolism / Protein
Structure, Tertiary / Rotation / Saccharomyces cerevisiae:
enzymology / Scattering, Small Angle / Time Factors /
Phosphoglycerate Kinase (NLM Chemicals) / J (WoSType)},
cin = {ICS-1 / JCNS-1},
ddc = {570},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
pnm = {BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung (FUEK505) / 544 - In-house Research
with PNI (POF2-544)},
pid = {G:(DE-Juel1)FUEK505 / G:(DE-HGF)POF2-544},
experiment = {EXP:(DE-MLZ)KWS2-20140101},
shelfmark = {Biophysics},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22404933},
pmc = {pmc:PMC3296038},
UT = {WOS:000301280900017},
doi = {10.1016/j.bpj.2012.01.002},
url = {https://juser.fz-juelich.de/record/20685},
}