Projection structure of the CHIP28 water channel in lipid bilayer membranes at 12-A resolution.
Projection structure of the CHIP28 water channel in lipid bilayer membranes at 12-A resolution.
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脂质双层膜中 CHIP28 水通道的投影结构,分辨率为 12 A。
DOI:
10.1021/bi00209a001
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发表时间:
1994
期刊:
影响因子:
2.9
通讯作者:
Verkman,AS
中科院分区:
文献类型:
--
作者:
Mitra,AK;Yeager,M;vanHoek,AN;Wiener,MC;Verkman,AS
Revised Manuscript Received August 25, 19948 abstract: Osmotic water transport across plasma membranes in erythrocytes and several epithelial cell types is facilitated by CHIP28, a water-selective membrane channel protein. In order to examine the structure of CHIP28 in membranes, large (1.5-2.5-^ m diameter), highly ordered, two-dimensional (2-D) crystals of purified and deglycosylated erythrocyte CHIP28 were generated by reconstitution of detergent-solubilized protein into synthetic lipid bilayers via detergent dialysis. Fourier transforms computed from low-dose electron micrographs of such crystals preserved in negative stain display order to 12-A resolution. The crystal lattice is tetragonal (a= 6=99.2±1.4 A) with plane group symmetry pAg. A projection density map at 12-A resolution defines the molecular boundary and organization of the CHIP28 monomers in the membrane plane. The unit cell contains four CHIP28 dimers, each composed of two oblong-shaped (37 X 25 A) monomers with opposite orientations. The CHIP28 monomers associate to form tetrameric structures around the 4-fold axes normal to the membrane plane where stain is excluded. The 2-D crystals of CHIP28 display order extending beyond the limit typically achieved by negative staining and therefore may be amenable to high-resolution structure analysis by cryo-electron microscopy.
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影响因子:
5.6
作者:
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通讯作者:
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影响因子:
64.5
作者:
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通讯作者:
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DOI:
10.1016/s0021-9258(17)37486-0
发表时间:
1994-02
期刊:
The Journal of biological chemistry
影响因子:
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作者:
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H. Hasegawa;T. Ma;W. Skach;M. Matthay;A. Verkman
DOI:
--
发表时间:
1994-04
期刊:
The Journal of biological chemistry
影响因子:
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作者:
Lan-bo Shi;W. Skach;A. Verkman
通讯作者:
Lan-bo Shi;W. Skach;A. Verkman
DOI:
10.1016/s0021-9258(17)42062-x
发表时间:
1994-01
期刊:
The Journal of biological chemistry
影响因子:
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作者:
T. Walz;Barbara L. Smith;M. Zeidel;A. Engel;P. Agre
通讯作者:
T. Walz;Barbara L. Smith;M. Zeidel;A. Engel;P. Agre