Heterotrimeric G Proteins Interact with the Small GTPase ARF
Heterotrimeric G Proteins Interact with the Small GTPase ARF
复制标题
异源三聚体 G 蛋白与小 GTP 酶 ARF 相互作用
DOI:
--
复制
发表时间:
1995
影响因子:
4.8
通讯作者:
P. Stahl
中科院分区:
文献类型:
--
作者:
M. Colombo;James Inglese;C. D’Souza;W. Berón;P. Stahl
Trimeric G proteins have emerged as important regulators of membrane trafficking. To explore a role for Gβγ in endosome fusion, we have taken advantage of β-adrenergic receptor kinase (βARK), an enzyme translocated to membranes by interaction with Gβγ. The COOH terminus of βARK (βARKct) has a Gβγ-binding domain which blocks some Gβγ-mediated processes. We found that βARKct and peptide G, a peptide derived from βARKct, inhibit in vitro endosome fusion. Interestingly, peptide G and ARF share sequence similarity. Peptide G and βARKct reversed ARF-mediated inhibition of endosome fusion and blocked ARF binding to membranes. Using an ARF fusion protein, we show that both Gβγ and Gαs interact with the small GTPase ARF, an interaction that is regulated by nucleotide binding. We conclude that G proteins may participate in the regulation of vesicular trafficking by directly interacting with ARF, a cytosolic factor required for transport.
登录
查看更多内容
DOI:
10.1016/s0021-9258(17)37587-7
发表时间:
1994-02
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
W. Koch;B. Hawes;James Inglese;L. Luttrell;R. Lefkowitz
通讯作者:
W. Koch;B. Hawes;James Inglese;L. Luttrell;R. Lefkowitz
影响因子:
56.9
作者:
PITCHER, JA;INGLESE, J;LEFKOWITZ, RJ
通讯作者:
LEFKOWITZ, RJ
DOI:
--
发表时间:
1993
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Bomsel,M;Mostov,KE
通讯作者:
Mostov,KE
影响因子:
3.1
作者:
Shaw,G
通讯作者:
Shaw,G
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kahn,RA;Gilman,AG
通讯作者:
Gilman,AG