Sensitivity to voltage-independent inhibition determined by pore-lining region of the acetylcholine receptor.
Sensitivity to voltage-independent inhibition determined by pore-lining region of the acetylcholine receptor.
复制标题
对电压非依赖性抑制的敏感性由乙酰胆碱受体的孔衬区域决定。
DOI:
10.1016/s0006-3495(98)77940-8
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发表时间:
1998
影响因子:
3.4
通讯作者:
Papke,RL
中科院分区:
文献类型:
--
作者:
Francis,MM;Choi,KI;Horenstein,BA;Papke,RL
Some noncompetitive inhibitors (e.g., ganglionic blockers) exhibit selectivity for the inhibition of neuronal nicotinic acetylcholine receptors (nAChRs). This study characterizes the mechanism of selective long-term inhibition of neuronal and muscle-neuronal chimeric nAChRs by bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (bis-TMP-10 or BTMPS), a bifunctional form of the potent ganglionic blocker tetramethylpiperidine. Long-term inhibition of neuronal nAChRs by bis-TMP-10 has been previously demonstrated to arise, at least in part, from the binding of the bis compound to neuronalβ-subunits. In this study, long-term inhibition is demonstrated to be dependent upon the presence of sequence element(s) within the pore-lining second transmembrane domain (tm2) of neuronalβ-subunits; however, the inhibitor binding site itself does not appear to be contained within the segment of the channel pore influenced by the membrane electric field. Specifically, our results imply that bis-TMP-10 interacts with an activation-sensitive element, the availability of which may be regulated by a sequence in the tm2 domain. Furthermore, we demonstrate a compound length requirement for long-term inhibition that would be consistent with binding to multiple sites located on the extracellular portion of the receptor.
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DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
White,BH;Cohen,JB
通讯作者:
Cohen,JB
DOI:
--
发表时间:
1978
期刊:
Journal of Physiology
影响因子:
--
作者:
E. Neher;J. Steinbach
通讯作者:
J. Steinbach
DOI:
--
发表时间:
1986
影响因子:
11.1
作者:
J. Giraudat;M. Dennis;T. Heidmann;J. Chang;J. Changeux
通讯作者:
J. Changeux
影响因子:
64.8
作者:
A. Spinks;E. Young
通讯作者:
E. Young
DOI:
10.1073/pnas.84.21.7763
发表时间:
1987-11-01
影响因子:
11.1
作者:
BOULTER, J;CONNOLLY, J;PATRICK, J
通讯作者:
PATRICK, J