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XB-ART-18489
Mol Pharmacol 1996 Mar 01;493:387-90.
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Coexpression with potassium channel subunits used to clone the Y2 receptor for neuropeptide Y.

Rimland JM , Seward EP , Humbert Y , Ratti E , Trist DG , North RA .


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Xenopus oocytes were injected with RNAs for the two inward-rectifier potassium channel subunits Kir3.1 (GIRK1) and Kir3.4 (rcKATP or CIR) in addition to RNA from the neuroblastoma cell line KAN-TS. Potassium currents were evoked by neuropeptide Y in oocytes injected with polyadenylated RNA or with cRNA from pools of a neuroblastoma (KAN-TS) cDNA library, and progressive subdivision of responding pools yielded a single cDNA. The encoded protein contains 381 amino acids, has the seven hydrophobic domains characteristic of G protein-coupled receptors, and is 31% identical to the Y1 receptor: potassium currents were induced by neuropeptide Y (EC50=60pm) and Y2-selective analogues. Coexpression with potassium channel subunits will be a generally useful method for the cloning of G protein-coupled receptors.

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Species referenced: Xenopus
Genes referenced: cir1 kcnj3 kcnj5 npy