Molecular cloning of G proteins and phosphodiesterases from rat taste cells
Molecular cloning of G proteins and phosphodiesterases from rat taste cells
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大鼠味觉细胞 G 蛋白和磷酸二酯酶的分子克隆
DOI:
10.1016/0031-9384(94)90360-3
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发表时间:
1994
影响因子:
2.9
通讯作者:
R. Margolskee
中科院分区:
文献类型:
--
作者:
S. K. Mclaughlin;P. Mckinnon;N. Spickofsky;W. Danho;R. Margolskee
To identify and characterize those proteins involved in taste transduction, we cloned G proteins and phosphodiesterases from rat taste tissue. Using degenerate primers corresponding to conserved regions of G protein α subunits, the polymerase chain reaction was used to amplify and clone eight distinct cDNAs:αi-2, αi-3, α12, α14, α8, αt-rod, α1-coneand α gustducin. αi-3, α14, α8, and αt-rodare more highly expressed in taste tissue than in the surrounding nonsensory tissue. α gustducin is only expressed in taste cells. Rod transducin had previously been found only in the rod cells of the retina, where it converts light stimulation of rhodopsin into activation of cGMP phosphodiesterase. The primary sequence of α gustducin shows striking similarities to rod transducin in the receptor interaction domain and the phosphodiesterase activation site. We propose that gustducin and transducin regulate phosphodiesterase activity in taste cells and that this may promote bitter transduction and inhibit sweet transduction. Consistent with this proposal, we cloned two types of cAMP PDE from taste tissue: dnc-1 and PDE-3.
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DOI:
10.1042/bj2600121
发表时间:
1989-05
期刊:
The Biochemical journal
影响因子:
--
作者:
B. J. Striem;U. Pace;Uri Zehavi;Michael Naim;D. Lancet
通讯作者:
B. J. Striem;U. Pace;Uri Zehavi;Michael Naim;D. Lancet
DOI:
10.1073/pnas.86.10.3604
发表时间:
1989
影响因子:
11.1
作者:
Davis,RL;Takayasu,H;Eberwine,M;Myres,J
通讯作者:
Myres,J
DOI:
10.1126/science.1317058
发表时间:
1992
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Rarick,HM;Artemyev,NO;Hamm,HE
通讯作者:
Hamm,HE
DOI:
10.1073/pnas.82.13.4311
发表时间:
1985
影响因子:
11.1
作者:
Medynski,DC;Sullivan,K;Smith,D;VanDop,C;Chang,FH;Fung,BK;Seeburg,PH;Bourne,HR
通讯作者:
Bourne,HR
影响因子:
3.6
作者:
Gillespie,PG;Beavo,JA
通讯作者:
Beavo,JA