Functional Expression and Characterization of the C. Elegans G-protein-coupled FLP-2 Receptor (T19F4.1) in Mammalian Cells and Yeast

Overview

Journal Int J Parasitol Drugs Drug Resist

Publisher Elsevier

Specialty Parasitology

Date 2014 Feb 18

PMID 24533288

Citations 12

Authors

Martha J Larsen

Elizabeth Ruiz Lancheros

Tracey Williams

David E Lowery

Timothy G Geary

Teresa M Kubiak

Affiliations

Soon will be listed here.

Abstract

Profound neuropeptide diversity characterizes the nematode nervous system, but it has proven challenging to match neuropeptide G protein-coupled receptors (GPCR) with their cognate ligands in heterologous systems. We have expressed the Caenorhabditis elegans GPCR encoded in the locus T19F4.1, previously matched with FMRFamide-like peptides encoded on the flp-2 precursor gene, in mammalian cells and in the yeast Saccharomyces cerevisiae. Pharmacological characterization revealed that the receptor is potently activated by flp-2 peptides in CHO cells (∼10 nM EC50) and in yeast (∼100 nM EC50), signaling through a Gqα pathway in each system. The yeast GPCR expression system provides a robust assay for screening for agonists of the flp-2 receptor and is the target of an ongoing high-throughput screening exercise.

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