Modeling of flexible membrane-bound biomolecular complexes for solution small-angle scattering
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Modeling of flexible membrane-bound biomolecular complexes for solution small-angle scattering. / Barclay, Abigail; Kragelund, Birthe B.; Arleth, Lise; Pedersen, Martin Cramer.
I: Journal of Colloid and Interface Science, Bind 635, 04.2023, s. 611-621.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Modeling of flexible membrane-bound biomolecular complexes for solution small-angle scattering
AU - Barclay, Abigail
AU - Kragelund, Birthe B.
AU - Arleth, Lise
AU - Pedersen, Martin Cramer
N1 - Publisher Copyright: © 2022
PY - 2023/4
Y1 - 2023/4
N2 - Recent advances in protein expression protocols, sample handling, and experimental set up of small-angle scattering experiments have allowed users of the technique to structurally investigate biomolecules of growing complexity and structural disorder. Notable examples include intrinsically disordered proteins, multi-domain proteins and membrane proteins in suitable carrier systems. Here, we outline a modeling scheme for calculating the scattering profiles from such complex samples. This kind of modeling is necessary for structural information to be refined from the corresponding data. The scheme bases itself on a hybrid of classical form factor based modeling and the well-known spherical harmonics-based formulation of small-angle scattering amplitudes. Our framework can account for flexible domains alongside other structurally elaborate components of the molecular system in question. We demonstrate the utility of this modeling scheme through a recent example of a structural model of the growth hormone receptor membrane protein in a phospholipid bilayer nanodisc which is refined against experimental SAXS data. Additionally we investigate how the scattering profiles from the complex would appear under different scattering contrasts. For each contrast situation we discuss what structural information is contained and the related consequences for modeling of the data.
AB - Recent advances in protein expression protocols, sample handling, and experimental set up of small-angle scattering experiments have allowed users of the technique to structurally investigate biomolecules of growing complexity and structural disorder. Notable examples include intrinsically disordered proteins, multi-domain proteins and membrane proteins in suitable carrier systems. Here, we outline a modeling scheme for calculating the scattering profiles from such complex samples. This kind of modeling is necessary for structural information to be refined from the corresponding data. The scheme bases itself on a hybrid of classical form factor based modeling and the well-known spherical harmonics-based formulation of small-angle scattering amplitudes. Our framework can account for flexible domains alongside other structurally elaborate components of the molecular system in question. We demonstrate the utility of this modeling scheme through a recent example of a structural model of the growth hormone receptor membrane protein in a phospholipid bilayer nanodisc which is refined against experimental SAXS data. Additionally we investigate how the scattering profiles from the complex would appear under different scattering contrasts. For each contrast situation we discuss what structural information is contained and the related consequences for modeling of the data.
KW - Intrinsically disordered protein
KW - Membrane protein
KW - Modeling
KW - Phospholipid bilayer nanodisc
KW - Small-angle neutron scattering
KW - Small-angle X-ray scattering
U2 - 10.1016/j.jcis.2022.12.024
DO - 10.1016/j.jcis.2022.12.024
M3 - Journal article
C2 - 36634513
AN - SCOPUS:85146048581
VL - 635
SP - 611
EP - 621
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
ER -
ID: 334256314