N-glycosylation and disulfide bonding affects GPRC6A receptor expression, function, and dimerization.
FEBS Lett
; 589(5): 588-97, 2015 Feb 27.
Article
em En
| MEDLINE
| ID: mdl-25617829
ABSTRACT
Investigation of post-translational modifications of receptor proteins is important for our understanding of receptor pharmacology and disease physiology. However, our knowledge about post-translational modifications of class C G protein-coupled receptors and how these modifications regulate expression and function is very limited. Herein, we show that the nutrient-sensing class C G protein-coupled receptor GPRC6A carries seven N-glycans and that one of these sites modulates surface expression whereas mutation of another site affects receptor function. GPRC6A has been speculated to form covalently linked dimers through cysteine disulfide linkage in the extracellular amino-terminal domain and here we show that GPRC6A indeed is a homodimer and that a disulfide bridge between the C131 residues is formed.
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Base de dados:
MEDLINE
Assunto principal:
Receptores Acoplados a Proteínas G
/
Dissulfetos
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Dinamarca