Sigma-Aldrich ChemiSCREEN Membrane Preparation Recombinant Human 5-HT7 Serotonin Receptor，用于放射性配体结合试验和GTPγS结合的人5-HT 7 GPCR膜制备。

产品概述

编码5-HT β 5-羟色胺受体的全长人HTR 7 cDNA

The neurotransmitter serotonin/5-hydroxytryptamine (5-HT) regulates a wide variety of neurological functions. A family of 13 receptors (12 GPCRs and one ion channel) mediate the effects of serotonin. The serotonin receptor 5-HT₇ is a Gs coupled receptor expressed in the brain (hypothalamus, hippocampus and frontal cortex) and in smooth muscle and GI tract. Systemic delivery of serotonin results in hypothermia, and pharmacological and genetic studies indicate that 5-HT₇ mediates this effect (Hedlund et al., 2003). In addition, 5-HT₇ appears to modulate circadian rhythms and smooth muscle relaxation, and is implicated as a target for sleep, particularly as related to depression, and migraine (Terron and Falcon-Neri, 1999; Mullins et al., 1999). Millipore′s 5-HT₇ membrane preparations are crude membrane preparations made from our proprietary stable recombinant cell lines to ensure high-level of GPCR surface expression; thus, they are ideal HTS tools for screening of agonists and antagonists of 5-HT₇. The membrane preparations exhibit a Kd of 37.7 nM for [³H]-5-Carboxamidotryptamine (5-CT). With 30 nM [³H]-5-CT, 10 μg/well 5-HT₇ Membrane Prep typically yields greater than 4-fold signal-to-background ratio.

应用领域

用于放射性配体结合试验和GTPγS结合的人5-HT 7 GPCR膜制备。

生化/生理作用

蛋白质靶标：5-HT 7

产品特点

Inucbation Conditions
Membranes are mixed with radioactive ligand and unlabeled competitor (see Figures 1 and 2 for concentrations tested) in binding buffer in a nonbinding 96-well plate, and incubated for 1-2 h. Prior to filtration, an FC 96-well harvest plate (Millipore cat. # MAHF C1H) is coated with 0.33% polyethyleneimine for 30 min, then washed with the binding buffer. Binding reaction is transferred to the filter plate, and washed 3 times (1 mL per well per wash) with Wash Buffer. The plate is dried and counted.

Binding buffer: 50 mM Tris, pH 7.4, 5 mM MgCl₂, 4 mM CaCl₂, 0.5 mM ascorbic acid, filtered and stored at 4°C

Radioligand: [³H]-5-Carboxamidotryptamine (Perkin Elmer NET1071)

Wash Buffer: same as the binding buffer.

One package contains enough membranes for at least 200 assays (units), where a unit is the amount of membrane that will yield greater than 4-fold signal:background with ³H-labeled 5-CT at 30 nM

物理形态

包装缓冲液中的液体：包装方法：将膜蛋白在包装缓冲液中调节至指定浓度，快速冷冻，并在-80 ° C下储存。

制备/使用说明

在-70 ° C下冷冻保存长达2年。不要冷冻和解冻。

分析说明

Table 1. Signal:background and specific binding values obtained in a competition binding assay with 10 μg of 5-HT₇ Receptor membrane prep. 10 µg/well Signal:Background 7.5 Specific Binding (cpm) 545
SPECIFICATIONS: 1 unit =10 μg
Bmax for [³H]-5-CT binding: 20.1 pmol/mg protein
Kd for [³H]-5-CT binding: ~37.7 nM

技术规格