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ChemiSCREEN Human D3 Dopamine Receptor Membrane Preparation

产品编号:4094870
规格:Human D3 GPCR membrane preparation for Radioligand binding Assays & GTPγS binding.
包装规格:200 UNITS
产品类别:进口试剂
品牌:Sigma-Aldrich
优惠价:立即咨询
产品价格
产品编号包装单位单价(元)国内现货国外库存询价单
4094870200 UNITS10460
基本信息
eCl@ss
32161000
NACRES
NA.84
General description【一般描述】
Dopamine is a catecholamine neurotransmitter that functions in the CNS to control locomotor, cognitive, emotional and neurendocrine processes, and in the periphery to modulate cardiovascular, renal and gastrointestinal processes. The biological activities of dopamine are mediated by a family of five GPCRs. The D1 and D5 subtypes couple to Gs to increase intracellular cAMP, whereas the D2, D3 and D4 subtypes couple to Gi to reduce cAMP (Missale et al., 1998). The dopamine D3 receptor is expressed in phylogenetically older regions of the brain, suggesting that it plays a role in cognitive and emotional functions. It has been the target of potential drugs for psychotic disorders and Parkinson′s disease. Chemicon′s D3 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 D3 interactions and its ligands. The membrane preparations exhibit a Kd of 0.1 nM for [125I]-Iodospiperone. With 5.0ug/well D3 membrane prep and 0.1 nM [125I]-Iodospiperone, a greater than 4-fold signal-to-background ratio was obtained.
Human D3 Receptor
Application【应用】
Human D3 GPCR membrane preparation for Radioligand binding Assays & GTPγS binding.
Biochem/physiol Actions【生化/生理作用】
Target Sub-Family: Dopamine
GPCR Class: A
Protein Target: D3
Quality【质量】
Table 1. Signal:background and specific binding values obtained in a competition binding assay with varying amounts of D3 Receptor membrane prep.
10 µg/well 5 µg/well
Signal:Background 4.88 5.93
Specific Binding (cpm) 1853.7 1861.3



SPECIFICATIONS: 1 unit = 5 µg membrane preparation
Bmax: 0.32 pmol/mg
Kd: 0.1 nM
Specifications【产品规格】
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, a GF/C 96-well filter plate is coated with 0.33% polyethyleneimine for 30 min, then washed with 50mM Tris, pH 7.4. 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, 120mM NaCl, filtered and stored at 4°C
Radioligand: [125I] -Iodospiperone(Perkin Elmer # NEX284)
Wash Buffer: 50 mM Tris, pH 7.4, filtered and stored at 4°C.
Physical form【外形】
One package 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 Iodospiperone at 0.1 nM.

Liquid in packaging buffer: 50 mM Tris, pH 7.4, 10% glycerol with no preservatives.
Packaging method: Membranes protein was adjusted to the indicated concentration in packaging buffer, rapidly frozen, and stored at -80oC.
Legal Information【法律信息】
CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany
产品性质
Quality Level【质量水平】
100
biological source【生物来源】
human
recombinant【重组】
expressed in Chem-1 cells
manufacturer/tradename
ChemiScreen
Chemicon®
technique(s)
ligand binding assay: suitable (GTPγS)
radioligand binding assay (RLBA): suitable
NCBI accession no.【NCBI登记号】
NM_000796.3
NM_033663.3
UniProt accession no.【UniProt登记号】
P35462
shipped in【运输】
dry ice
产品说明
【免责声明】
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 uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
安全信息
Storage Class Code【储存分类代码】
12 - Non Combustible Liquids
WGK
WGK 2
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