Shrinkage activates a nonselective conductance: involvement of a Walker-motif protein and PKC.

Shrinkage activates a nonselective conductance: involvement of a Walker-motif protein and PKC.
复制标题

收缩激活非选择性电导:Walker 基序蛋白和 PKC 的参与。

DOI:
10.1152/ajpcell.1996.270.1.c179
复制
发表时间:
1996
期刊:
The American journal of physiology.
影响因子:
--
通讯作者:
Dedman,JR
Dedman,JR
中科院分区:
--
文献类型:
--
作者:
Nelson,DJ;Tien,XY;Xie,W;Brasitus,TA;Kaetzel,MA;Dedman,JR

文献摘要

参考文献

被引文献

相似文献

所有细胞在渗透挑战中维持其体积的能力依赖于盐和水在质膜上的调节运动。我们证明了在细胞收缩过程中Caco-2细胞的非选择性电导的磷酸化依赖性门控。细胞内应用外源性纯化大鼠脑蛋白激酶C (PKC)可激活与收缩过程中激活的电流相似的电流,Na(+)与cl -渗透率比约为1.7:1。为了防止在Caco-2细胞中高水平表达的囊性纤维化跨膜调节剂(CFTR)的PKC和/或收缩依赖性激活,通过膜片移液管将一种功能性抗肽抗体anti-CFTR505-511引入细胞。Anti-CFTR505-511靶向CFTR第一个核苷酸结合褶中的Walker基序,可阻止PKC/收缩年龄电流激活。肽CFTR505-511也诱导了电流抑制,这表明可能参与通道附近的一个调控元件,该元件与CFTR的第一个核苷酸结合折叠具有序列同源性,并且与通道的结合是通道门控所必需的。
The ability of all cells to maintain their volume during an osmotic challenge is dependent on the regulated movement of salt and water across the plasma membrane. We demonstrate the phosphorylation-dependent gating of a nonselective conductance in Caco-2 cells during cellular shrinkage. Intracellular application of exogenous purified rat brain protein kinase C (PKC) resulted in the activation of a current similar to that activated during shrinkage with a Na(+)-to-Cl- permeability ratio of approximately 1.7:1. To prevent possible PKC- and/or shrinkage-dependent activation of cystic fibrosis transmembrane regulator (CFTR), which is expressed at high levels in Caco-2 cells, a functional anti-peptide antibody, anti-CFTR505-511, was introduced into the cells via the patch pipette. Anti-CFTR505-511, which is directed against the Walker motif in the first nucleotide binding fold of CFTR, prevented the PKC/shrink-age current activation. The peptide CFTR505-511 also induced current inhibition, suggesting the possible involvement of a regulatory element in close proximity to the channel that shares sequence homology with the first nucleotide binding fold of CFTR and whose binding to the channel is required for channel gating.
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
Lytle,C;Forbush3rd,B
通讯作者: Forbush3rd,B
DOI: 10.1038/352628a0
发表时间: 1991-08
期刊: Nature
影响因子: 64.8
作者:
J. Tabcharani;X. Chang;J. Riordan;J. Hanrahan
通讯作者: J. Tabcharani;X. Chang;J. Riordan;J. Hanrahan
蛋白激酶 C 对非洲爪蟾卵母细胞中小脑 mRNA 表达的推定 P 型 Ca 通道的调节
DOI: --
发表时间: 1993
期刊: FEBS Letters
影响因子: 3.5
作者:
F. Fournier;P. Charnet;E. Bourinet;C. Vilbert;F. Matifat;G. Charpentier;P. Navarre;Gérard Brûlé;Daniel Marlot
通讯作者: Daniel Marlot
腺苷通过蛋白激酶 C 和 G 蛋白调节兔皮质集合管细胞系中的氯离子通道。
DOI: 10.1172/jci115662
发表时间: 1992
期刊: The Journal of clinical investigation
影响因子: --
作者:
Schwiebert,EM;Karlson,KH;Friedman,PA;Dietl,P;Spielman,WS;Stanton,BA
通讯作者: Stanton,BA
DOI: 10.1073/pnas.87.10.4012
发表时间: 1990-05-01
影响因子: 11.1
作者:
SCHOUMACHER, RA;RAM, J;FRIZZELL, RA
通讯作者: FRIZZELL, RA