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HTS206M | ChemiSCREEN™ Membrane Preparation Recombinant Human MrgD Mas-Related Gene Family Receptor

200 units  
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      Replacement Information

      Key Specifications Table

      SpeciesHost CellsProtein Target
      Human Chem-1 MRGPRD / MrgD
      Catalogue NumberHTS206M
      Trade Name
      • ChemiScreen
      • Chemicon
      DescriptionChemiSCREEN™ Membrane Preparation Recombinant Human MrgD Mas-Related Gene Family Receptor
      OverviewFull-length human MRGPRD cDNA encoding MrgD
      Background InformationThe Mas-related genes (Mrgs), also known as sensory neuron-specific G-protein coupled receptors (SNSRs), are selectively expressed in subpopulations of sensory neurons involved in the perceptor of pain (Dong et al., 2001). The Mrg family in rodents consists of 50 receptors in the MrgA-MrgH subfamilies, but humans contain fewer Mrg members. MrgD (also known as TGR7) is found across species from rodents to humans, and its expression is restricted to nonpeptidergic, small-diameter, IB4+ dorsal root ganglion (DRG) neurons. MrgD binds β-alanine, but not L-alanine, which results in increased intracellular calcium and the suppression of forskolin-induced cAMP production, thus suggesting coupling to Gq and Gi proteins (Shinohara et al., 2004). β-alanine-induced activation of MrgD inhibits KCNQ2/3-mediated M-currents in cells overexpressing MrgD and KCNQ2/3 and also in cultured DRG neurons, which indicates that MrgD enhances nociceptive signaling (Crozier et al., 2007). Millipore's MrgD 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 MrgD interactions with its ligands. The cell line exhibits a calcium response with EC50s of 11 µM for β-alanine. The membrane preparations exhibit EC50s of 69 µM for β-alanine in a GTPS binding assay.
      Product Information
      PresentationLiquid in packaging buffer: 50 mM Tris pH 7.4, 10% glycerol and 1% BSA no preservatives.
      Packaging method: Membranes protein were adjusted to 1 mg/ml in 1 ml packaging buffer, rapidly frozen, and stored at -80°C
      ApplicationHuman MRGPRD / MrgD GPCR membrane preparation for Radioligand binding Assays & GTPγS binding.
      Key Applications
      • Radioligand binding assay
      • GTPγS binding
      Application NotesRadioligand binding assay and GTPγS binding.
      Biological Information
      Entrez Gene Number
      Gene Symbol
      • MRGPRD
      • MRGD
      • mrgD
      • TGR7
      GPCR ClassA
      Host CellsChem-1
      Protein TargetMRGPRD / MrgD
      Target Sub-FamilyMas-related gene
      UniProt Number
      UniProt SummaryFUNCTION: SwissProt: Q8TDS7 # May regulate nociceptor function and/or development, including the sensation or modulation of pain. Functions as a specific membrane receptor for beta-alanine. Beta-alanine at micromolar doses specifically evoked Ca(2+) influx in cells expressing the receptor. Beta-alanine decreases forskolin- stimulated cAMP production in cells expressing the receptor, suggesting that the receptor couples with G-protein G(q) and G(i).
      SIZE: 321 amino acids; 36118 Da
      SUBCELLULAR LOCATION: Cell membrane; Multi-pass membrane protein. Note=Localized at the plasma membrane but internalized into the cytoplasm after treatment with beta-alanine.
      SIMILARITY: SwissProt: Q8TDS7 ## Belongs to the G-protein coupled receptor 1 family. Mas subfamily.
      Incubation ConditionsASSAY CONDITIONS: Membranes are permeabilized by addition of saponin to an equal concentration by mass, then mixed with [35S]-GTPγS (final concentration of 0.3 nM) in 20 mM HEPES, pH 7.4/100 mM NaCl/10 mM MgCl2/0.5 μM GDP in a nonbinding 96-well plate. Unlabeled β-alanine was added to the final concentration indicated in Figure 1 (final volume 100 μL), and incubated for 30 min at 30°C. The binding reaction is transferred to a GF/B filter plate (Millipore MAHF B1H) previously prewetted with water. The plate is washed 3 times (1 mL per well per wash) with cold 10 mM sodium phosphate, pH 7.4, then dried and counted.

      One vial contains enough membranes for at least 200 assays (units), where one unit is the amount of membrane that will yield greater than 1000 cpm specific β-alanine -stimulated [35S]-GTPγS binding.

      The MrgD membrane preparation is expected to be functional in a radioligand binding assay; however, the end user will need to determine the optimal radiolabeled ligand for use with this product.
      Physicochemical Information
      Materials Information
      Toxicological Information
      Safety Information according to GHS
      Safety Information
      Product Usage Statements
      Quality AssuranceSPECIFICATIONS: 1 unit = 5 µg membrane preparation
      EC50 in GTPγS binding assay by β-alanine: ~ 69 μM
      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 ConditionsMaintain frozen at -70°C for up to 2 years. Do not freeze and thaw.
      Packaging Information
      Material Size200 units
      Transport Information
      Supplemental Information




      Safety Data Sheet (SDS) 


      Reference overviewPub Med ID
      MrgD activation inhibits KCNQ/M-currents and contributes to enhanced neuronal excitability.
      Crozier, Robert A, et al.
      J. Neurosci., 27: 4492-6 (2007)  2007

      17442834 17442834
      Identification of a G protein-coupled receptor specifically responsive to beta-alanine.
      Shinohara, Tokuyuki, et al.
      J. Biol. Chem., 279: 23559-64 (2004)  2004

      15037633 15037633
      A diverse family of GPCRs expressed in specific subsets of nociceptive sensory neurons.
      Dong, X, et al.
      Cell, 106: 619-32 (2001)  2001

      11551509 11551509

      Data Sheet


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