期刊
CELL
卷 161, 期 7, 页码 1633-1643出版社
CELL PRESS
DOI: 10.1016/j.cell.2015.06.002
关键词
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资金
- National Cancer Institute [Y1-CO-1020]
- NIGMS [Y1-GM-1104]
- NIH [MH051699, NS082092, NS084398, U54 GM094618, GPCR-235]
- ShanghaiTech University
Lipid biology continues to emerge as an area of significant therapeutic interest, particularly as the result of an enhanced understanding of the wealth of signaling molecules with diverse physiological properties. This growth in knowledge is epitomized by lysophosphatidic acid (LPA), which functions through interactions with at least six cognate G protein- coupled receptors. Herein, we present three crystal structures of LPA(1) in complex with antagonist tool compounds selected and designed through structural and stability analyses. Structural analysis combined with molecular dynamics identified a basis for ligand access to the LPA(1) binding pocket from the extracellular space contrasting with the proposed access for the sphingosine 1-phosphate receptor. Characteristics of the LPA(1) binding pocket raise the possibility of promiscuous ligand recognition of phosphorylated endocannabinoids. Cell-based assays confirmed this hypothesis, linking the distinct receptor systems through metabolically related ligands with potential functional and therapeutic implications for treatment of disease.
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