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ChemiScreen™ Membrane Preparation Human Recombinant APJ

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货号：HTS068M

品牌：Millipore 密理博

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Replacement Information

重要规格表

Species Host Cells Protein Target
Human Chem-1 APJ
Description
Catalogue Number HTS068M
Trade Name
  • ChemiScreen
  • Chemicon
Description ChemiSCREEN™ Membrane Preparation Recombinant Human APJ Apelin Receptor
Overview Full-length human AGTRL1 cDNA encoding APJ
Background Information Apelin peptides have been discovered to be a family of peptides of different sizes that is derived from the N-terminus of a 77 amino acid precursor peptide (preproapelin) (Hosoya et al., 2000). Apelin receptor (APJ) is a G protein-coupled receptor that is activated by several apelin fragments. APJ activation leads to the inhibition of cAMP production. APJ and apelin peptides have been found to be involved in the regulation of cardiovascular function (Katugampola et al., 2001) and fluid homeostasis (Reaux et al., 2001). Broad roles of apelin system has been established in lowering blood pressure, as a potent cardiac inotrope, in modulating pituitary hormone release and food and water intake, in stress activation, and as a novel adipokine that is excreted from fat cells and regulates insulin (Lee et al., 2006) . Millipore's APJ 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 APJ. The membrane preparations exhibit a Kd of 0.4 nM for [125I]-Apelin. With 0.25 nM [125I]-Apelin, 5 g/well APJ Membrane Prep typically yields greater than 20-fold signal-to-background ratio.
References
Product Information
Format Membranes
Presentation Liquid in packaging buffer: 50 mM Tris pH 7.4, 10% glycerol and 1% BSA with no preservatives.
Packaging method: Membranes protein were adjusted to the indicated concentration in 1 ml packaging buffer, rapidly frozen, and stored at -80°C.
Applications
Application Human APJ GPCR membrane preparation for Radioligand binding Assays & GTPγS binding.
Key Applications
  • Radioligand binding assay
  • GTPγS binding
Application Notes Radioligand binding assay and GTPγS binding.
Biological Information
Entrez Gene Number
Gene Symbol
  • APLNR
  • AGTRL1
  • APJ
GPCR Class A
Host Cells Chem-1
Protein Target APJ
Target Sub-Family Apelin
UniProt Number
Incubation 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 50mM HEPES, pH 7.4, 0.5% BSA. 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 Hepes, pH 7.4, 5 mM MgCl2, 1 mM CaCl2, 0.2% BSA, filtered and stored at 4°C

Radioligand: [125I]-Apelin. (Perkin Elmer#:NEX-393 )

Wash Buffer: 50 mM Hepes, pH 7.4, 500mM NaCl , 0.1% BSA, filtered and stored at 4°C.

One package contains enough membranes for at least 200 assays (units), where a unit is the amount of membrane that will yield greater than 20-fold signal:background with 125I labeled Apelin at 0.25 nM
Physicochemical Information
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information

Table 1. Signal:background and specific binding values obtained in a competition binding assay with varying amounts of APJ membrane prep.
Product Usage Statements
10 µg/well 5 µg/well
Signal:Background 33 50
Specific Binding (cpm) 17297 15015


SPECIFICATIONS: 1 unit = 5 µg membrane preparation
B max for [ 125I]-Apelin binding: 3.85 pmol/mg protein
K d for [ 125I]-Apelin binding: ~0.4 nM Usage Statement
  • 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 uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Storage and Shipping Information
Storage Conditions Maintain frozen at -70°C for up to 2 years. Do not freeze and thaw.
Packaging Information
Material Size 200 units
Transport Information
Supplemental Information
Specifications

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