Kinetics of binding of [3H]acetylcholine and [3H]carbamoylcholine to Torpedo postsynaptic membranes: slow conformational transitions of the cholinergic receptor.
Kinetics of binding of [3H]acetylcholine and [3H]carbamoylcholine to Torpedo postsynaptic membranes: slow conformational transitions of the cholinergic receptor.
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[3H]乙酰胆碱和[3H]氨基甲酰胆碱与鱼雷突触后膜结合的动力学:胆碱能受体的缓慢构象转变。
DOI:
10.1021/bi00564a031
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发表时间:
1980
期刊:
影响因子:
2.9
通讯作者:
Cohen,JB
中科院分区:
文献类型:
--
作者:
Boyd,ND;Cohen,JB
Norman D. Boyd and Jonathan B. Cohen* abstract: The kinetics of binding of [3H] acetylcholine (AcCh) and [3H] carbamoylcholine (Carb) to membrane-bound nicotinic receptor from Torpedo electric tissue have been measured on the second time scale by rapidmixing and ul-trafiltration. The concentration dependence of the association kinetics of agonist binding and the kinetics of ligand disso-ciation and receptor reisomerizationfollowing the removal of agonist are analyzed in terms of a model in which the observed binding is by a single population of receptors that exists in the absence of agonist in two interconvertible conformations, one binding agonist weakly (Rt) and the other bindingwith high affinity (R2). A computer simulation has been used to de-termine values of rate and equilibrium constants characterizing the ligand interactionswith the two conformations and for theI^ rmeability control by nicotinic cholinergic receptors is characterized by two kinetically distinct processes: the primary permeability response (channel opening) that occurs within a fraction of a millisecond of therelease of acetylcholine (AcCh) 1 from nerve and the slow decrease of that permeability response (desensitization) that occurs when a constant con-centration of AcCh or other agonist is maintained for seconds
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影响因子:
2.9
作者:
R. Neubig;Jonathan B. Cohen
通讯作者:
Jonathan B. Cohen
DOI:
10.1111/j.1432-1033.1979.tb12894.x
发表时间:
1979
期刊:
European journal of biochemistry
影响因子:
--
作者:
T. Heidmann;J. Changeux
通讯作者:
J. Changeux
DOI:
--
发表时间:
1977
期刊:
Biochemical and Biophysical Research Communications - BBRC
影响因子:
--
作者:
S. Hamilton;M. McLaughlin;A. Karlin
通讯作者:
A. Karlin
影响因子:
5.6
作者:
F. J. Barrantes
通讯作者:
F. J. Barrantes
影响因子:
64.8
作者:
R. Bonner;F. Barrantes;T. Jovin
通讯作者:
T. Jovin