Characterization of G Family G Proteins G (G), G (G), and G Expressed in the Baculovirus-Insect Cell System (*)
Characterization of G Family G Proteins G (G), G (G), and G Expressed in the Baculovirus-Insect Cell System (*)
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杆状病毒-昆虫细胞系统中表达的 G 家族 G 蛋白 G (G)、G (G) 和 G 的表征 (*)
DOI:
10.1074/jbc.270.11.6246
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发表时间:
1995
期刊:
影响因子:
--
通讯作者:
U. Kikkawa
中科院分区:
文献类型:
--
作者:
F. Nakamura;Mariko Kato;K. Kameyama;T. Nukada;T. Haga;H. Kato;T. Takenawa;U. Kikkawa
The α subunits of Gq family G proteins, Gα(G14α), Gα(Gα), and Gqα were expressed with G protein β1 and 2 subunits in insect cells using a baculovirus system. The trimeric forms of G proteins, G (Gαβ), G (Gαβ), and Gq (Gqαβ), were solubilized by 1% sodium cholate and purified by sequential chromatography on three kinds of columns. G, G, and Gq activated phospholipase C-β purified from bovine brain in the presence of aluminum fluoride to the same extent. Muscarinic acetylcholine receptor m1 subtype stimulated the guanosine 5′-O-(3-thiotriphosphate) (GTPS) binding to G, G, and Gq in the presence of similar concentrations of carbamylcholine. When m1 receptor, G protein, and phospholipase C-β were reconstituted in lipid vesicles, each subtype of Gq family G proteins mediated the activation of phospholipase C-β by carbamylcholine in the presence of either 1 μM GTPS or 1 mM GTP. Phospholipase C-β stimulated the GTPase activity of G, G, and Gq in the presence of m1 receptor and carbamylcholine but did not stimulate the GTPase activity of Go. Protein kinase C phosphorylated m1 receptor and phospholipase C-β, but the phosphorylation did not significantly affect the ability of the m1 receptor to stimulate phospholipase C-β in the reconstitution system of purified proteins.
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DOI:
--
发表时间:
1993-07
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. Hepler;T. Kozasa;A. Smrcka;Melvin I. Simon;S. Rhee;P. Sternweis;A. Gilman
通讯作者:
J. Hepler;T. Kozasa;A. Smrcka;Melvin I. Simon;S. Rhee;P. Sternweis;A. Gilman
影响因子:
56.9
作者:
SMRCKA, AV;HEPLER, JR;STERNWEIS, PC
通讯作者:
STERNWEIS, PC
DOI:
10.1073/pnas.87.23.9113
发表时间:
1990-12-01
影响因子:
11.1
作者:
STRATHMANN, M;SIMON, MI
通讯作者:
SIMON, MI
DOI:
10.1016/s0021-9258(18)41962-x
发表时间:
1992-08
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
C. Lee;D. Park;Dianqing Wu;S. Rhee;Melvin I. Simon
通讯作者:
C. Lee;D. Park;Dianqing Wu;S. Rhee;Melvin I. Simon
DOI:
--
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ma,HW;Blitzer,RD;Healy,EC;Premont,RT;Landau,EM;Iyengar,R
通讯作者:
Iyengar,R