Disclosure of cholesterol recognition motifs in transmembrane domains of the human nicotinic acetylcholine receptor.

Disclosure of cholesterol recognition motifs in transmembrane domains of the human nicotinic acetylcholine receptor.
复制标题

DOI:
10.1038/srep00069
复制
发表时间:
2011
期刊:
影响因子:
4.6
通讯作者:
Barrantes, Francisco J.
Barrantes, Francisco J.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Baier, Carlos J.;Fantini, Jacques;Barrantes, Francisco J.

文献摘要

参考文献

被引文献

相似文献

胆固醇影响烟碱乙酰胆碱受体(AChR)的离子通道功能、膜中的分布和聚集、内吞作用和胞吐分选。我们报告的胆固醇识别基序的发生,这里创造的“CARC”,在跨膜区的AChR亚基承担广泛接触周围的脂质,因此最适合于传递胆固醇介导的信号从后者。每个AChR亚基的跨膜段上可以停靠3个胆固醇分子,使得每个AChR分子总共有15个胆固醇分子。CARC基序各自贡献35至52 kJ.mol-1的相互作用能,每个受体分子总计约200 kJ.mol-1,即约40%的脂质溶剂化自由能/ AChR分子。  CARC基序是显着的沿着系统发育的规模,从原核生物到人类,这表明它可能是负责上述AChR的一些结构/功能特性。
Cholesterol influences ion-channel function, distribution and clustering in the membrane, endocytosis, and exocytic sorting of the nicotinic acetylcholine receptor (AChR). We report the occurrence of a cholesterol recognition motif, here coined “CARC”, in the transmembrane regions of AChR subunits that bear extensive contact with the surrounding lipid, and are thus optimally suited to convey cholesterol-mediated signaling from the latter. Three cholesterol molecules could be docked on the transmembrane segments of each AChR subunit, rendering a total of 15 cholesterol molecules per AChR molecule. The CARC motifs contribute each with an energy of interaction between 35 and 52 kJ.mol−1, adding up to a total of about 200 kJ.mol−1 per receptor molecule, i.e. ∼40% of the lipid solvation free energy/ AChR molecule. The CARC motif is remarkably conserved along the phylogenetic scale, from prokaryotes to human, suggesting that it could be responsible for some of the above structural/functional properties of the AChR.
DOI: 10.1021/bi0500224
发表时间: 2005-04-12
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Epand, RF;Sayer, BG;Epand, RM
通讯作者: Epand, RM
DOI: 10.1021/jp900714b
发表时间: 2009-05-14
影响因子: 3.3
作者:
Cheng, Mary H.;Xu, Yan;Tang, Pei
通讯作者: Tang, Pei
DOI: 10.1080/09687680210166226
发表时间: 2002-10-01
影响因子: --
作者:
Barrantes, FJ
通讯作者: Barrantes, FJ
DOI: 10.1016/s0005-2736(98)00153-9
发表时间: 1998-11-11
影响因子: 3.4
作者:
Corbin, J;Wang, HH;Blanton, MP
通讯作者: Blanton, MP
DOI: 10.1210/en.139.12.4991
发表时间: 1998-12-01
期刊: ENDOCRINOLOGY
影响因子: 4.8
作者:
Li, H;Papadopoulos, V
通讯作者: Papadopoulos, V