Guanylyl cyclase stimulatory coupling to K(Ca) channels.
Guanylyl cyclase stimulatory coupling to K(Ca) channels.
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鸟苷酸环化酶刺激耦合至 K(Ca) 通道。
DOI:
10.1152/ajpcell.2000.279.6.c1938
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发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Kotlikoff,MI
中科院分区:
文献类型:
--
作者:
Nara,M;Dhulipala,PD;Ji,GJ;Kamasani,UR;Wang,YX;Matalon,S;Kotlikoff,MI
We coexpressed the human large-conductance, calcium-activated K (KCa) channel (α- and β-subunits) and rat atrial natriuretic peptide (ANP) receptor genes inXenopusoocytes to examine the mechanism of guanylyl cyclase stimulatory coupling to the channel. Exposure of oocytes to ANP stimulated whole cell KCacurrents by 21 ± 3% (at 60 mV), without altering current kinetics. Similarly, spermine NONOate, a nitric oxide donor, increased KCacurrents (20 ± 4% at 60 mV) in oocytes expressing the channel subunits alone. Stimulation of KCacurrents by ANP was inhibited in a concentration-dependent manner by a peptide inhibitor of cGMP-dependent protein kinase (PKG). Receptor/channel stimulatory coupling was not completely abolished by mutating the cAMP-dependent protein kinase phosphorylation site on the α-subunit (S869; Nars M, Dhulipals PD, Wang YX, and Kotlikoff MI.J Biol Chem273: 14920–14924, 1998) or by mutating a neighboring consensus PKG site (S855), but mutation of both residues virtually abolished coupling. Spermine NONOate also failed to stimulate channels expressed from the double mutant cRNAs. These data indicate that nitric oxide donors stimulate KCachannels through cGMP-dependent phosphorylation and that two serine residues (855 and 869) underlie this stimulatory coupling.
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DOI:
10.1152/ajpcell.1993.265.1.c299
发表时间:
1993-07
期刊:
The American journal of physiology
影响因子:
--
作者:
B. E. Robertson;R. Schubert;Jorgen Hescheler;M. Nelson
通讯作者:
B. E. Robertson;R. Schubert;Jorgen Hescheler;M. Nelson
DOI:
--
发表时间:
1986
期刊:
Journal of Physiology
影响因子:
--
作者:
K. Fujii;T. Ishimatsu;H. Kuriyama
通讯作者:
H. Kuriyama
DOI:
10.1152/ajpgi.1996.271.4.g629
发表时间:
1996-10
期刊:
The American journal of physiology
影响因子:
--
作者:
F. Vogalis;T. Vincent;I. Qureshi;F. Schmalz;Manus W. Ward;Kenton M. Sanders;B. Horowitz
通讯作者:
F. Vogalis;T. Vincent;I. Qureshi;F. Schmalz;Manus W. Ward;Kenton M. Sanders;B. Horowitz
影响因子:
4.8
作者:
Masayuki Nara;P. Dhulipala;Y. Wang;M. Kotlikoff
通讯作者:
M. Kotlikoff
DOI:
10.1152/ajplung.1996.270.3.l338
发表时间:
1996
期刊:
The American journal of physiology
影响因子:
--
作者:
Yamakage,M;Hirshman,CA;Croxton,TL
通讯作者:
Croxton,TL