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@ARTICLE{Koutsioumpas:840608,
author = {Koutsioumpas, Alexandros},
title = {{L}ow-{R}esolution {S}tructure of {D}etergent-{S}olubilized
{M}embrane {P}roteins from {S}mall-{A}ngle
{S}cattering {D}ata},
journal = {Biophysical journal},
volume = {113},
number = {11},
issn = {0006-3495},
address = {Cambridge, Mass.},
publisher = {Cell Press},
reportid = {FZJ-2017-08113},
pages = {2373 - 2382},
year = {2017},
abstract = {Despite the ever-increasing usage of small-angle scattering
as a valuable complementary method in the field of
structural biology, applications concerning membrane
proteins remain elusive mainly due to experimental
challenges and the relative lack of theoretical tools for
the treatment of scattering data. This fact adds up to
general difficulties encountered also by other established
methods (crystallography, NMR) for the study of membrane
proteins. Following the general paradigm of ab initio
methods for low-resolution restoration of soluble protein
structure from small-angle scattering data, we construct a
general multiphase model with a set of physical constraints,
which, together with an appropriate minimization procedure,
gives direct structural information concerning the different
components (protein, detergent molecules) of
detergent-solubilized membrane protein complexes. Assessment
of the method’s precision and robustness is evaluated by
performing shape restorations from simulated data of a
tetrameric α-helical membrane channel (Aquaporin-0)
solubilized by n-Dodecyl β-D-Maltoside and from previously
published small-angle neutron scattering experimental data
of the filamentous hemagglutinin adhesin β-barrel protein
transporter solubilized by n-Octyl β-D-glucopyranoside. It
is shown that the acquisition of small-angle neutron
scattering data at two different solvent contrasts, together
with an estimation of detergent aggregation number around
the protein, permits the reliable reconstruction of the
shape of membrane proteins without the need for any prior
structural information.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1},
ddc = {570},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6215 - Soft Matter,
Health and Life Sciences (POF3-621) / 6G4 - Jülich Centre
for Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6215 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)NOSPEC-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29211991},
UT = {WOS:000417264300009},
doi = {10.1016/j.bpj.2017.10.003},
url = {https://juser.fz-juelich.de/record/840608},
}