Subunit Heterogeneity in N-type Ca Channels (*)
Subunit Heterogeneity in N-type Ca Channels (*)
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N 型 Ca 通道中的亚基异质性 (*)
DOI:
--
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发表时间:
1996
影响因子:
4.8
通讯作者:
K. Campbell
中科院分区:
文献类型:
--
作者:
V. Scott;M. De Waard;Hongyan Liu;C. Gurnett;D. Venzke;V. Lennon;K. Campbell
The β subunit of the voltage-dependent Ca channel is a cytoplasmic protein that interacts directly with an α subunit, thereby modulating the biophysical properties of the channel. Herein, we demonstrate that the α subunit of the N-type Ca channel associates with several different β subunits. Polyclonal antibodies specific for three different β subunits immunoprecipitated I--conotoxin GVIA binding from solubilized rabbit brain membranes. Enrichment of the N-type Ca channels with an α subunit-specific monoclonal antibody showed the association of β, β, and β subunits. Protein sequencing of tryptic peptides of the 57-kDa component of the purified N-type Ca channel confirmed the presence of the β and β subunits. Each of the β subunits bound to the α subunit interaction domain with similar high affinity. Thus, our data demonstrate important heterogeneity in the β subunit composition of the N-type Ca channels, which may be responsible for some of the diverse kinetic properties recorded from neurons.
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影响因子:
158.5
作者:
LENNON, VA;KRYZER, TJ;LAMBERT, EH
通讯作者:
LAMBERT, EH
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Miller,RJ
通讯作者:
Miller,RJ
DOI:
10.1073/pnas.89.11.5058
发表时间:
1992-06-01
影响因子:
11.1
作者:
DUBEL, SJ;STARR, TVB;SNUTCH, TP
通讯作者:
SNUTCH, TP
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Leung,AT;Imagawa,T;Campbell,KP
通讯作者:
Campbell,KP