GTP‐mediated macromolecular interactions: the common features of different systems
GTP‐mediated macromolecular interactions: the common features of different systems
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GTP介导的大分子相互作用:不同系统的共同特征
DOI:
10.1096/fasebj.2.8.2452111
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发表时间:
1988
期刊:
影响因子:
--
通讯作者:
J. Allende
中科院分区:
文献类型:
--
作者:
J. Allende
G proteins that serve to transduce external signals in membranes share with protein synthesis factors and tubulin structural and functional features that are common to proteins that participate in reversible GTP‐mediated macromolecular interactions. These proteins can bind GTP and GDP with high affinity, adopting different structures depending on whether they are complexed with the nucleotide diphosphate or triphosphate. The GTP · protein complex has high affinity for an acceptor macromolecule (or complex of macromolecules) and interacts with it, affecting its activity. These GTP‐binding proteins also possess an intrinsic GTPase activity that is generally stimulated by its interaction with the acceptor. The GTPase activity converts the bound GTP to GDP, switching the configuration of the complexed protein to one of low affinity for the acceptor and causing its dissociation. The protein · GDP complex must exchange its GDP for GTP to allow the protein to acquire the high‐affinity structure that can cycle back to the acceptor macromolecule. This exchange of guanine nucleotides requires in several instances exchange factors that can regulate the whole process. A detailed comparison of the features of the different systems is made with respect to structural similarities, regulation by protein phosphorylation, ADP ribosylation by bacterial toxins, and requirements for exchange factors. It is also proposed that there is a similar mechanism that involves ATP/ADP‐binding proteins.—Allende, j. E. GTP‐mediated macromolecular interactions: the common features of different systems. FASEB J. 2: 2356‐2367; 1988.
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影响因子:
64.8
作者:
D. Logothetis;Y. Kurachi;J. Galper;E. Neer;D. Clapham
通讯作者:
D. Logothetis;Y. Kurachi;J. Galper;E. Neer;D. Clapham
DOI:
10.1073/pnas.83.13.4947
发表时间:
1986
影响因子:
11.1
作者:
Pace,U;Lancet,D
通讯作者:
Lancet,D
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Fung,BK
通讯作者:
Fung,BK
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Rappaport,J;Weinmann,R
通讯作者:
Weinmann,R
影响因子:
5.3
作者:
Rubin,EJ;Gill,DM;Boquet,P;Popoff,MR
通讯作者:
Popoff,MR