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Cited by 557

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Identification of p2y9/GPR23 as a Novel G Protein-coupled Receptor for Lysophosphatidic Acid, Structurally Distant from the Edg Family

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Noguchi, Kyoko, Ishii, Satoshi, Shimizu, Takao·2003·Journal of Biological Chemistry

Abstract

Lysophosphatidic acid (LPA) is a bioactive lipid mediator with diverse physiological and pathological actions on many types of cells. LPA has been widely considered to elicit its biological functions through three types of G protein-coupled receptors, Edg-2 (endothelial cell differentiation gene-2)/LPA1/vzg-1 (ventricular zone gene-1), Edg-4/LPA2, and Edg-7/LPA3. We identified an orphan G protein-coupled receptor, p2y9/GPR23, as the fourth LPA receptor (LPA4). Membrane fractions of RH7777 cells transiently expressing p2y9/GPR23 displayed a specific binding for 1-oleoyl-LPA with a Kd value of around 45 nm. Competition binding and reporter gene assays showed that p2y9/GPR23 preferred structural analogs of LPA with a rank order of 1-oleoyl- > 1-stearoyl- > 1-palmitoyl- > 1-myristoyl- > 1-alkyl- > 1-alkenyl-LPA. In Chinese hamster ovary cells expressing p2y9/GPR23, 1-oleoyl-LPA induced an increase in intracellular Ca2+ concentration and stimulated adenylyl cyclase activity. Quantitative real-time PCR demonstrated that mRNA of p2y9/GPR23 was significantly abundant in ovary compared with other tissues. Interestingly, p2y9/GPR23 shares only 20-24% amino acid identities with Edg-2/LPA1, Edg-4/LPA2, and Edg-7/LPA3, and phylogenetic analysis also shows that p2y9/GPR23 is far distant from the Edg family. These facts suggest that p2y9/GPR23 has evolved from different ancestor sequences from the Edg family.

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Metadata

Authors
Noguchi, K., Ishii, S., & Shimizu, T.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2003-07
Volume
278
Issue
28
Pages
25600-25606
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1992365461
Cited by
557
References
34
FWCI
13.08
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Identification of p2y9/GPR23 as a Novel G Protein-coupled Receptor for Lysophosphatidic Acid, Structurally Distant from the Edg Family. https://app.cochat.ai/papers/10.1074/jbc.m302648200
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Noguchi, K., Ishii, S., & Shimizu, T. (2003). Identification of p2y9/GPR23 as a Novel G Protein-coupled Receptor for Lysophosphatidic Acid, Structurally Distant from the Edg Family. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m302648200

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