HTS022M

ChemiSCREEN MC3 Membrane Preparation

• 分類程式碼代碼: 41106514
• eCl@ss: 32161000
• NACRES: NA.45

屬性

• 生物源: human
• 品質等級: 100
• 重組細胞: expressed in Chem-1 cells
• 形狀: liquid
• 製造商／商標名: ChemiScreen; Chemicon^®
• 技術: ligand binding assay: suitable (GTPγS); radioligand binding assay (RLBA): suitable
• NCBI登錄號: NM_019888.2
• UniProt登錄號: P41968

描述

一般說明

Human MC3

The melanocortins, the peptides alpha-, beta- and gamma-melanocyte-stimulating hormone (MSH), bind to a family of five Gs-coupled GPCR receptors (MCRs) and play important roles in energy balance, reproductive function, pigmentation and inflammation (Gantz and Fong, 2003). MC3R is expressed in the CNS, including the hypothalamus, and appears to play a role in energy homeostasis as indicated by the observation that MC3R-null mice have increased subcutaneous fat, a loss of lean body mass, and reduced energy expenditure (Butler et al., 2000; Chen et al., 2000). Macrophages also express MC3R, which together with MC1R mediates the anti-inflammatory activity of melanocortins in animal models of peritonitis and myocardial infarct (Getting et al., 2003; 2004). Chemicon′s MC3R 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 antagonists of MC3R interactions with melanocortins. The membrane preparations exhibit a Kd of 0.4 nM for [125I]-MSH. With 10.0 mg/well MC3R Membrane Prep and 0.25 nM [125I]-MSH, a greater than 7-fold signal-to-background ratio is obtained.

應用

Human MC3 GPCR membrane preparation for Radioligand binding Assays & GTPgammaS binding.

Radioligand binding assay, and GTPgammaS binding.

生化／生理作用

• GPCR Class: A
• Protein Target: MC3
• Target Sub-Family: Melanocortin

規格

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, a GF/C 96-well filter plate is coated with 0.33% polyethyleneimine for 30 min, then washed with 50mM HEPES, pH 7.4, 0.5% BSA. Binding reaction is transferred to the filter plate, and washed 9 times (1 mL per well per wash) with Wash Buffer. The plate is dried and counted.Binding buffer: 25 mM Hepes, pH 7.0, 1 mM MgCl₂, 1.5 mM CaCl₂ 2H2O, 100mM NaCl, 0.2% BSA, Protease Inhibitor, filter and stored at 4 °C.

Radioligand: [¹²⁵I] MSH (Perkin Elmer# NEX352)

Wash Buffer: 25 mM Hepes, pH 7.0, 1 mM MgCl₂, 1.5 mM CaCl₂ 2H₂O, 100mM NaCl, 0.2% BSA, filtered and stored at 4°C. One vial contains enough membranes for at least 200 assays (units), where an unit is the amount of membrane that will yield greater than 4-fold signal:background with 125I-labeled MSH at 0.25 nM

外觀

Liquid in packaging buffer: 50 mM Tris pH 7.4, 10% glycerol and 1% BSA no preservatives.Packaging method: Membranes protein were adjusted to 0.5 mg/ml in 1 ml packaging buffer, rapidly frozen, and stored at -80°C.

儲存和穩定性

Maintain frozen at -70°C for up to 2 years. Do not freeze and thaw.

法律資訊

CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany

免責聲明

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial

安全資訊

• 儲存類別代碼: 12 - Non Combustible Liquids
• 水污染物質分類（WGK）: WGK 2