Non-canonical functions of RGS proteins.
Cell Signal
; 22(9): 1274-81, 2010 Sep.
Article
em En
| MEDLINE
| ID: mdl-20363320
ABSTRACT
Regulators of G protein signalling (RGS) proteins are united into a family by the presence of the RGS domain which serves as a GTPase-activating protein (GAP) for various Galpha subunits of heterotrimeric G proteins. Through this mechanism, RGS proteins regulate signalling of numerous G protein-coupled receptors. In addition to the RGS domains, RGS proteins contain diverse regions of various lengths that regulate intracellular localization, GAP activity or receptor selectivity of RGS proteins, often through interaction with other partners. However, it is becoming increasingly appreciated that through these non-RGS regions, RGS proteins can serve non-canonical functions distinct from inactivation of Galpha subunits. This review summarizes the data implicating RGS proteins in the (i) regulation of G protein signalling by non-canonical mechanisms, (ii) regulation of non-G protein signalling, (iii) signal transduction from receptors not coupled to G proteins, (iv) activation of mitogen-activated protein kinases, and (v) non-canonical functions in the nucleus.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Transdução de Sinais
/
Proteínas RGS
Idioma:
En
Revista:
Cell Signal
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos