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KcsA一种新型的K离子通道

KcsA:A Novel Potassium Ion Channel
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摘要 DeclanADoyleetal于 1998年利用X射线结晶分析在Streptomyceslividans(变铅青链霉菌 )中发现的KcsA(K+conductionandselectivityarchitecture)是一种新型的K+ 通道 .它由四个亚基组成 ,每个亚基含有两个α 螺旋 ,在KcsA的中央有一个选择性滤膜 ,对K+ 具有特殊的通透性 .本文仅对KcsA的结构及其对K+ 选择性介导的作用机制进行综述 . KcsA(K+ conduction and selectivity architecture)is a novel potassium channel which was discovered by Declan A.Doyle et al with X-ray crystallize analysis in Streptomyces lividans in 1998.KcsA consists of four subunit and each subunit consists of two alpha-helix.There is a selective filter membrane at the middle of KcsA,which has a special permeation for potassium ion.The structure of KcsA and the possible mechanism of KcsA is discussed in the review.
出处 《首都师范大学学报(自然科学版)》 2003年第3期57-61,共5页 Journal of Capital Normal University:Natural Science Edition
关键词 KCSA K离子通道 K^+通道 变铅青链霉菌 Α-螺旋 选择性滤膜 作用机制 孔道结构 氨基酸序列 KcsA, potassium ion channel, selective filter membrane, alpha-helix
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参考文献20

  • 1LeMasurier M, Heginbotham L, Miller C. KesA : It' s a potassium channel. J G en Physiol, 2001,118 : 303 ~ 314.
  • 2Declan A Doyle, Joāo Morais Cabral, Richard A Pfuetzner, et al. The Structure of the Potassium Channel: Molecular Basis of K^+ Conduction and Selectivity. Science, 1998,280: 69 ~ 77.
  • 3Heginbotham L, Kolmakova- Partensky L, Miller C. Functional reconstitution of a prokaryotic K^+ channel. J Gen Physiol, 1998,111 :741 ~ 749.
  • 4Shrivastava I H ,Sansom M S P. Molecular dynamics simulations and KcsA channel gating. European Biophysics Journal, 2002,31(3) :207 ~ 216.
  • 5Heginbotham L, LeMasurier M, Kolmakova- Partensky L, et al. Single streptomyces lividans K^+ channels. Functional asymmetries and sideness of proton activation. J Gen Physiol. 1999.114:551 ~ 560.
  • 6Yufeng Zhou, et al. Chemistry of ion coordination and hydration revealed by a K^+ channel-Fab complex at 2.0A resolution. Nature,2001,414:43 ~ 48.
  • 7Roux B, Mackinnon R. The cavity and pore helices in the KcsA K^+ channel : electrostatic stabilization of monovalent cation Science,1999,285:100 ~ 102.
  • 8Hoshi T, Zagotta W N, Aldrich R W. Shaker potassium channel gating I: Transition near the open state. J Gen Physiol, 1994, 103 :249 ~ 278.
  • 9Ial T,et al. Probing ion permeation and gating in a K^+ channel with backbone mutations in the selectivity filter. Nature neurosci,2001,4:239 ~ 246.
  • 10Otwinowski Z, Minor W. Processing of X-ray diffraction data collected in oscillation mode. Methods Enzymol, 1997,276:307 ~ 326.

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