Structure of outer membrane protein G in lipid bilayers.

Structure of outer membrane protein G in lipid bilayers.
复制标题

DOI:
10.1038/s41467-017-02228-2
复制
发表时间:
2017-12-12
影响因子:
16.6
通讯作者:
Oschkinat H
Oschkinat H
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Retel JS;Nieuwkoop AJ;Hiller M;Higman VA;Barbet-Massin E;Stanek J;Andreas LB;Franks WT;van Rossum BJ;Vinothkumar KR;Handel L;de Palma GG;Bardiaux B;Pintacuda G;Emsley L;Kühlbrandt W;Oschkinat H

文献摘要

参考文献

被引文献

相似文献

β桶蛋白介导细菌的营养摄取,并在细胞信号传导和粘附中发挥重要作用。对于大肠杆菌的14链外膜蛋白G,打开和关闭是pH依赖性的。细胞外环在这一过程中的不同作用被提出,X射线和溶液NMR研究是不同的。在这里,我们报告的外膜蛋白G的结构研究在双层的E。大肠杆菌脂质提取物的魔角旋转NMR。总共有1847个残基间的1H-1H和13 C-13 C距离限制,256个扭转角,但没有氢键限制用于计算结构。发现β-链的长度在膜边界之外变化,其中链6-8最长,并且细胞外环3和4有序。在股1和14处的桶闭合部位比大多数剩余股更无序,柔性朝向环3和4减小。环4呈现明确的螺旋。像OmpG一样,孔蛋白嵌入细菌的外膜中,促进营养物质和离子的摄取和分泌。在这里,作者提出了一个协议的固态NMR结构测定大于25 kDa的蛋白质,并用它来表征膜嵌入OmpG的结构。
β-barrel proteins mediate nutrient uptake in bacteria and serve vital functions in cell signaling and adhesion. For the 14-strand outer membrane protein G of Escherichia coli, opening and closing is pH-dependent. Different roles of the extracellular loops in this process were proposed, and X-ray and solution NMR studies were divergent. Here, we report the structure of outer membrane protein G investigated in bilayers of E. coli lipid extracts by magic-angle-spinning NMR. In total, 1847 inter-residue 1H–1H and 13C–13C distance restraints, 256 torsion angles, but no hydrogen bond restraints are used to calculate the structure. The length of β-strands is found to vary beyond the membrane boundary, with strands 6–8 being the longest and the extracellular loops 3 and 4 well ordered. The site of barrel closure at strands 1 and 14 is more disordered than most remaining strands, with the flexibility decreasing toward loops 3 and 4. Loop 4 presents a well-defined helix. Porins, like OmpG, are embedded in the outer membrane of bacteria and facilitate uptake and secretion of nutrients and ions. Here the authors present a protocol for solid state NMR structure determination of proteins larger than 25 kDa and use it to structurally characterize membrane embedded OmpG.
DOI: 10.1093/nar/gkh417
发表时间: 2004-07-01
影响因子: 14.9
作者:
Bagos, PG;Liakopoulos, TD;Hamodrakas, SJ
通讯作者: Hamodrakas, SJ
DOI: 10.1023/a:1008334930603
发表时间: 1999-05-01
影响因子: 2.7
作者:
Hong, M;Jakes, K
通讯作者: Jakes, K
DOI: 10.1093/nar/gkq1143
发表时间: 2011-01
影响因子: 14.9
作者:
Keseler IM;Collado-Vides J;Santos-Zavaleta A;Peralta-Gil M;Gama-Castro S;Muñiz-Rascado L;Bonavides-Martinez C;Paley S;Krummenacker M;Altman T;Kaipa P;Spaulding A;Pacheco J;Latendresse M;Fulcher C;Sarker M;Shearer AG;Mackie A;Paulsen I;Gunsalus RP;Karp PD
通讯作者: Karp PD
甲型流感 M218-60 二聚体的结构和机制。
DOI: 10.1021/jacs.5b04802
发表时间: 2015-12-02
影响因子: 15
作者:
Andreas LB;Reese M;Eddy MT;Gelev V;Ni QZ;Miller EA;Emsley L;Pintacuda G;Chou JJ;Griffin RG
通讯作者: Griffin RG
DOI: 10.1007/978-1-61779-480-3_23
发表时间: 2012-01-01
期刊: PROTEIN NMR TECHNIQUES, THIRD EDITION
影响因子: --
作者:
Bardiaux, Benjamin;Malliavin, Therese;Nilges, Michael
通讯作者: Nilges, Michael