Bovine Brain GO Isoforms Have Distinct γ Subunit Compositions (*)
Bovine Brain GO Isoforms Have Distinct γ Subunit Compositions (*)
复制标题
牛脑 GO 亚型具有独特的 γ 亚基组成 (*)
DOI:
--
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发表时间:
1995
影响因子:
4.8
通讯作者:
J. Hildebrandt
中科院分区:
文献类型:
--
作者:
M. Wilcox;J. Dingus;E. Balcueva;W. McIntire;N. Mehta;K. Schey;J. Robishaw;J. Hildebrandt
The γ subunit composition of the major bovine brain GO and Gi proteins (GOA, GOB, GOC, Gi1, and Gi2) was characterized using antibodies against specific γ isoforms. Each of the purified G protein heterotrimers contained a heterogeneous population of γ subunits, and the profiles of the γ subunits found with Gi1, Gi2, and GOA were similar. In contrast, each GO isoform had a distinct pattern of associated γ subunits. These differences were surprising given that all three αO isoforms are thought to share a common amino-terminal sequence important for the binding of βγ dimers and that the αOA and αi1 proteins may come from the same αO mRNA. The free αOA and αi1 subunits had unique elution behaviors during MonoQ chromatography, compatible with differences in their post-translational processing. These results indicate that both the α and γ subunit compositions of heterotrimers define the structure of an intact G protein. Furthermore, the exact subunit composition of G protein heterotrimers may depend upon regulated expression of different subunit isoforms or upon cellular processing of α subunits.
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DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Cali,JJ;Balcueva,EA;Rybalkin,I;Robishaw,JD
通讯作者:
Robishaw,JD
DOI:
10.1073/pnas.87.17.6477
发表时间:
1990
影响因子:
11.1
作者:
Strathmann,M;Wilkie,TM;Simon,MI
通讯作者:
Simon,MI
DOI:
10.1146/annurev.pa.30.040190.003331
发表时间:
1990
影响因子:
12.5
作者:
L. Birnbaumer
通讯作者:
L. Birnbaumer
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Padrell,E;Carty,DJ;Moriarty,TM;Hildebrandt,JD;Landau,EM;Iyengar,R
通讯作者:
Iyengar,R
DOI:
10.1074/jbc.270.7.2946
发表时间:
1995
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Rahmatullah,M;Ginnan,R;Robishaw,JD
通讯作者:
Robishaw,JD