Generation of unfolded outer membrane protein ensembles defined by hydrodynamic properties
Generation of unfolded outer membrane protein ensembles defined by hydrodynamic properties
复制标题
由流体动力学特性定义的未折叠外膜蛋白整体的生成
DOI:
10.1007/s00249-023-01639-y
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Fleming, Karen G.
中科院分区:
文献类型:
--
作者:
Devlin, Taylor;Fleming, Patrick J.;Loza, Nicole;Fleming, Karen G.
Outer membrane proteins (OMPs) must exist as an unfolded ensemble while interacting with a chaperone network in the periplasm of Gram-negative bacteria. Here, we developed a method to model unfolded OMP (uOMP) conformational ensembles using the experimental properties of two well-studied OMPs. The overall sizes and shapes of the unfolded ensembles in the absence of a denaturant were experimentally defined by measuring the sedimentation coefficient as a function of urea concentration. We used these data to model a full range of unfolded conformations by parameterizing a targeted coarse-grained simulation protocol. The ensemble members were further refined by short molecular dynamics simulations to reflect proper torsion angles. The final conformational ensembles have polymer properties different from unfolded soluble and intrinsically disordered proteins and reveal inherent differences in the unfolded states that necessitate further investigation. Building these uOMP ensembles advances the understanding of OMP biogenesis and provides essential information for interpreting structures of uOMP-chaperone complexes.
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DOI:
10.1016/j.bbamem.2017.09.020
发表时间:
2017-12
期刊:
Biochimica et biophysica acta. Biomembranes
影响因子:
--
作者:
Chaturvedi D;Mahalakshmi R
通讯作者:
Mahalakshmi R
影响因子:
10.5
作者:
Konovalova A;Kahne DE;Silhavy TJ
通讯作者:
Silhavy TJ
DOI:
10.1101/679373
发表时间:
2019
期刊:
bioRxiv
影响因子:
--
作者:
Mustapha Carab Ahmed;R. Crehuet;K. Lindorff
通讯作者:
K. Lindorff
影响因子:
4.1
作者:
T. Ulrich;D. Rapaport
通讯作者:
D. Rapaport
DOI:
--
发表时间:
2019
影响因子:
11.1
作者:
Utsab R. Shrestha;Puneet Juneja;Qiu Zhang;V. Gurumoorthy;J. Borreguero;V. Urban;Xiaolin Cheng;S. Pingali;Jeremy C. Smith;H. O’Neill;Loukas Petridis
通讯作者:
Loukas Petridis