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    Science. 1998 Mar 6;279(5356):1552-5.

    Sphingosine-1-phosphate as a ligand for the G protein-coupled receptor EDG-1.

    Lee MJ, Van Brocklyn JR, Thangada S, Liu CH, Hand AR, Menzeleev R, Spiegel S, Hla T.

    Source

    Department of Physiology, University of Connecticut School of Medicine, Farmington, CT 06030, USA.

    Abstract

    The sphingolipid metabolite sphingosine-1-phosphate (SPP) has been implicated as a second messenger in cell proliferation and survival. However, many of its biological effects are due to binding to unidentified receptors on the cell surface. SPP activated the heterotrimeric guanine nucleotide binding protein (G protein)-coupled orphan receptor EDG-1, originally cloned as Endothelial Differentiation Gene-1. EDG-1 bound SPP with high affinity (dissociation constant = 8.1 nM) and high specificity. Overexpression of EDG-1 induced exaggerated cell-cell aggregation, enhanced expression of cadherins, and formation of well-developed adherens junctions in a manner dependent on SPP and the small guanine nucleotide binding protein Rho.

    PMID:
    9488656
    [PubMed - indexed for MEDLINE]
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