The core domain of a new retina specific RGS protein stimulates the GTPase activity of transducin in vitro.
The core domain of a new retina specific RGS protein stimulates the GTPase activity of transducin in vitro.
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一种新的视网膜特异性 RGS 蛋白的核心结构域可在体外刺激转导蛋白的 GTP 酶活性。
DOI:
10.1073/pnas.94.7.2945
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发表时间:
1997
影响因子:
11.1
通讯作者:
Hurley,JB
中科院分区:
文献类型:
--
作者:
Faurobert,E;Hurley,JB
GTP hydrolysis by the transducin α subunit is stimulated by a membrane-bound protein. The identity of this GTPase-activating protein (GAP) is not yet known, but the recent identification of a new gene family encoding regulator of G protein signaling (RGS) proteins raises the possibility that the transducin GAP is an RGS protein. Biochemical evidence shows that RGS proteins act as GAPs for α subunits of the Gisubfamily of G proteins. To identify an RGS protein that could be a GAP for the transducin α subunit, we investigated the expression of RGS proteins in the retina and identified a new RGS domain, RET-RGS-d, which is specifically expressed in the retina.In situRNA hybridization analyses revealed that RET-RGS-d is expressed in photoreceptor cells as well as in other cells of the retina. Recombinant RET-RGS-d accelerates single turnover hydrolysis of GTP by transducin. We used RET-RGS-d to isolate a full-length cDNA, RET-RGS1, encoding a new RGS protein with a C terminus that corresponds to RET-RGS-d. The N-terminal half of RET-RGS1 contains a putative transmembrane domain and a string of nine cysteines that are potential substrates for multiple palmitoylation. These findings suggest that RET-RGS1 is an integral membrane protein and that it is a candidate for the membrane-associated protein responsible for the GAP activity detected in photoreceptor membranes.
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影响因子:
4.3
作者:
H. Sambrook
通讯作者:
H. Sambrook
DOI:
10.1073/pnas.84.24.9290
发表时间:
1987
影响因子:
11.1
作者:
Sather,WA;Detwiler,PB
通讯作者:
Detwiler,PB
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
ArshavskyVYu;Gray-Keller,MP;Bownds,MD
通讯作者:
Bownds,MD
影响因子:
2.9
作者:
A. Otto;B. Antonny;T. Vuong
通讯作者:
T. Vuong
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
W. Roush
通讯作者:
W. Roush