Evaluation of DIBMA nanoparticles of variable size and anionic lipid content as tools for the structural and functional study of membrane proteins.
Evaluation of DIBMA nanoparticles of variable size and anionic lipid content as tools for the structural and functional study of membrane proteins.
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不同尺寸和阴离子脂质含量的 DIBMA 纳米颗粒作为膜蛋白结构和功能研究工具的评估
DOI:
10.1016/j.bbamem.2021.183588
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Cosentino K
中科院分区:
文献类型:
--
作者:
Voskoboynikova N;Margheritis EG;Kodde F;Rademacher M;Schowe M;Budke-Gieseking A;Psathaki OE;Steinhoff HJ;Cosentino K
Amphiphilic maleic acid-containing polymers allow for the direct extraction of membrane proteins into stable, homogenous, water-soluble copolymer/lipid nanoparticles without the use of detergents. By adjusting the polymer/lipid ratio, the size of the nanoparticles can be tuned at convenience for the incorporation of protein complexes of different size. However, an increase in the size of the lipid nanoparticles may correlate with increased sample heterogeneity, thus hampering their application to spectroscopic and structural techniques where highly homogeneous samples are desirable. In addition, size homogeneity can be affected by low liposome solubilization efficiency by DIBMA, which carries a negative charge, in the presence of high lipid charge density.In this work, we apply biophysical tools to characterize the size and size heterogeneity of large (above 15 nm) lipid nanoparticles encased by the diisobutylene/maleic acid (DIBMA) copolymer at different DIBMA/lipid ratios and percentages of anionic lipids. Importantly, for nanoparticle preparations in the diameter range of 40 nm or below, the size homogeneity of the DIBMA/lipid nanoparticles (DIBMALPs) remains unchanged. In addition, we show that anionic lipids do not affect the production, size and size homogeneity of DIBMALPs. Furthermore, they do not affect the overall lipid dynamics in the membrane, and preserve the functionality of an enclosed membrane protein.This work strengthens the suitability of DIBMALPs as universal, native-like lipid environments for functional studies of membrane proteins and provide useful insight on the suitability of these systems for those structural techniques requiring highly homogeneous sample preparations.
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影响因子:
3.5
作者:
Klose, Daniel;Voskoboynikova, Natalia;Steinhoff, Heinz-Juergen
通讯作者:
Steinhoff, Heinz-Juergen
DOI:
10.1016/j.bbamem.2016.02.039
发表时间:
2016-03
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Sarah C. Lee;S. Khalid;N. Pollock;Timothy J. Knowles;K. Edler;A. Rothnie;Owen R T Thomas;T. Dafforn
通讯作者:
Sarah C. Lee;S. Khalid;N. Pollock;Timothy J. Knowles;K. Edler;A. Rothnie;Owen R T Thomas;T. Dafforn
DOI:
10.1016/j.bbamem.2020.183190
发表时间:
2020
期刊:
Biochimica et biophysica acta. Biomembranes
影响因子:
--
作者:
Elisabeth Häusler;K. Fredriksson;I. Goba;Carsten Peters;K. Raltchev;L. Sperl;A. Steiner;S. Weinkauf;F. Hagn
通讯作者:
F. Hagn
影响因子:
3.4
作者:
Gulamhussein, Aiman A.;Uddin, Romez;Rothnie, Alice J.
通讯作者:
Rothnie, Alice J.
影响因子:
3.4
作者:
G. Schmies;B. Lüttenberg;I. Chizhov;Martin Engelhard;A. Becker;E. Bamberg
通讯作者:
E. Bamberg