title: The regulatory mechanisms of export trafficking of G protein-coupled receptors.
abstract: G protein-coupled receptors (GPCRs) are a superfamily of cell-surface receptors that regulate a variety of cell functions by responding to a myriad of ligands. The magnitude of the response elicited by a ligand is dictated by the level of receptor available at the plasma membrane. GPCR expression levels at the cell surface are a balance of three highly regulated, dynamic intracellular trafficking processes, namely export, internalization and degradation. This review will cover recent advances in understanding the mechanism underlying GPCR export trafficking by focusing on specific motifs required for ER export and the role of the Ras-like Rab1 GTPase and glycosylation in regulating ER-Golgi-cell-surface transport. The manifestation of diseases due to the disruption of GPCR export is also discussed.
authors: Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, 1901 Perdido St, New Orleans, LA 70112, United States.
authors: Matthew T
authors: MT
authors: Duvernay
authors: Catalin M
authors: CM
authors: Filipeanu
authors: Guangyu
authors: G
authors: Wu
mesh_terms: D020816:Amino Acid Motifs; D000595:Amino Acid Sequence; D000818:Animals; D004721:Endoplasmic Reticulum / Q000378:metabolism; D006056:Golgi Apparatus / Q000378:metabolism; D006801:Humans; D008969:Molecular Sequence Data; D021381:Protein Transport; D043562:Receptors, G-Protein-Coupled / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology*; D013329:Structure-Activity Relationship; D020691:rab GTP-Binding Proteins / Q000378:metabolism
chemical_list: D043562:Receptors, G-Protein-Coupled; D020691:rab GTP-Binding Proteins