The influences of protonation state of histidine on aromatic/arginine region of aquaporin-1 protein

The influences of protonation state of histidine on aromatic/arginine region of aquaporin-1 protein
复制标题

组氨酸质子化状态对aquaporin-1蛋白芳香区/精氨酸区的影响

DOI:
10.1080/08927022.2012.718438
复制
发表时间:
2013-03
影响因子:
2.1
通讯作者:
Wang, Jihua
Wang, Jihua
中科院分区:
化学4区
文献类型:
--
作者:
Hu, Guodong;Qi, Lisheng;Dou, Xianghua;Wang, Jihua

文献摘要

参考文献

相似文献

水通道蛋白-1(Aquaporin-1,AQP 1)广泛分布于上皮组织中,负责水的吸收和分泌。芳香/精氨酸(ar/R)收缩区的组氨酸(His 182)残基在通过膜运输水方面起着重要作用。在本研究中,我们进行了总共46 ns的平衡分子动力学(MD)模拟,并获得了His 182在两种质子化状态(Hsd是Nδ上的质子,Hse是N δ上的质子)对ar/R区域的影响。水的渗透速率表明,水分子在Hsd态比在Hse态更容易渗透带有残留物的AQP 1的ar/R区域。在最后10 ns MD模拟期间计算ar/R区域中的孔的最小半径。分析了Ar_(197)的孔隙状态(开闭)、ar/R区最小半径和二面角C_β-C_γ-C_δ-N_α之间的关系。结果表明,最小半径可以用来表征孔隙的状态。
Aquaporin-1 (AQP1) is widely distributed in the epithelial tissue for water absorption and secretion. The histidine (His182) residue in the aromatic/arginine (ar/R) constriction region plays an important role in transporting water through the membrane. In this study, we have performed a total of 46 ns equilibrium molecular dynamics (MD) simulations, and obtained the influence of His182 in two protonation states (Hsd is the proton at Nδ and Hse is the proton at Nϵ) on the ar/R region. Water permeation rate shows that it is easier for water molecules to permeate the ar/R region of the AQP1 with residue in the Hsd state than in the Hse state. The minimum radii of the pore in the ar/R region were calculated during the last 10 ns MD simulation. We have analysed the correlation among the state of the pore (open or close), the minimum radius of the ar/R region and the dihedral angles < Cβ-Cγ-Cδ-Nϵ of Arg197. The results show that the minimum radius can be used to mark the state of the pore.
DOI: 10.1006/bbrc.1998.8252
发表时间: 1998-03-06
影响因子: 3.1
作者:
Ishibashi, K;Kuwahara, M;Sasaki, S
通讯作者: Sasaki, S
DOI: 10.1016/s0021-9258(19)37635-5
发表时间: 1988-10
期刊: The Journal of biological chemistry
影响因子: --
作者:
B. Denker;Barbara L. Smith;F. Kuhajda;P. Agre
通讯作者: B. Denker;Barbara L. Smith;F. Kuhajda;P. Agre
DOI: --
发表时间: 2008-06
期刊: ArXiv
影响因子: --
作者:
Venkatesh Saligrama
通讯作者: Venkatesh Saligrama
DOI: 10.1021/bi00172a042
发表时间: 1994-02
期刊: Biochemistry
影响因子: 2.9
作者:
M. Zeidel;S. Nielsen;S. Nielsen;S. Nielsen;Barbara L. Smith;Barbara L. Smith;Barbara L. Smith;S. Ambudkar;S. Ambudkar;S. Ambudkar;A. B. Maunsbach;A. B. Maunsbach;A. B. Maunsbach;P. Agre
通讯作者: M. Zeidel;S. Nielsen;S. Nielsen;S. Nielsen;Barbara L. Smith;Barbara L. Smith;Barbara L. Smith;S. Ambudkar;S. Ambudkar;S. Ambudkar;A. B. Maunsbach;A. B. Maunsbach;A. B. Maunsbach;P. Agre
DOI: 10.1073/pnas.0507225103
发表时间: 2006-01-10
影响因子: 11.1
作者:
Beitz, E;Wu, BH;Zeuthen, T
通讯作者: Zeuthen, T