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@ARTICLE{Stadler:23113,
author = {Stadler, A.M. and Pellegrini, E. and Johnson, M. and
Fitter, J. and Zaccai, G.},
title = {{D}ynamics-{S}tability {R}elationships in {A}po-and
{H}olomyoglobin: {A} {C}ombined {N}eutron {S}cattering and
{M}olecular {D}ynamics {S}imulations {S}tudy},
journal = {Biophysical journal},
volume = {102},
number = {2},
issn = {0006-3495},
address = {New York, NY},
publisher = {Rockefeller Univ. Press},
reportid = {PreJuSER-23113},
pages = {351 - 359},
year = {2012},
note = {Record converted from VDB: 12.11.2012},
abstract = {The removal of the heme group from myoglobin (Mb) results
in a destabilization of the protein structure. The dynamic
basis of the destabilization was followed by comparative
measurements on holo- (holo-Mb) and apomyoglobin (apo-Mb).
Mean-squared displacements (MSD) and protein resilience on
the picosecond-to-nanosecond timescale were measured by
elastic incoherent neutron scattering. Differences in
thermodynamic parameters, MSD, and resilience were observed
for both proteins. The resilience of holo-Mb was
significantly lower than that of apo-Mb, indicating entropic
stabilization by a higher degree of conformational sampling
in the heme-bound folded protein. Molecular dynamics
simulations provided site-specific information. Averaged
over the whole structure, the molecular dynamics simulations
yielded similar MSD and resilience values for the two
proteins. The mobility of residues around the heme group in
holo-Mb showed a smaller MSD and higher resilience compared
to the same residue group in apo-Mb. It is of interest that
in holo-Mb, higher MSD values are observed for the residues
outside the heme pocket, indicating an entropic contribution
to protein stabilization by heme binding, which is in
agreement with experimental results.},
keywords = {Animals / Apoproteins: chemistry / Entropy / Heme:
chemistry / Horses / Molecular Dynamics Simulation /
Myoglobin: chemistry / Neutron Diffraction / Protein
Stability / Protein Unfolding / Time Factors / Transition
Temperature / Apoproteins (NLM Chemicals) / Myoglobin (NLM
Chemicals) / Heme (NLM Chemicals) / J (WoSType)},
cin = {ICS-1 / JCNS-1 / ICS-5},
ddc = {570},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106 /
I:(DE-Juel1)ICS-5-20110106},
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},
shelfmark = {Biophysics},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22339872},
pmc = {pmc:PMC3260689},
UT = {WOS:000299244100021},
doi = {10.1016/j.bpj.2011.12.031},
url = {https://juser.fz-juelich.de/record/23113},
}