SBAT02
MRP1 human
membrane preparation for ATPase Assay, recombinant, expressed in baculovirus infected Sf9 cells
Synonym(s):
ABCC1, Multidrug resistance-associated protein 1
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About This Item
UNSPSC Code:
12352202
NACRES:
NA.84
recombinant
expressed in baculovirus infected Sf9 cells
form
liquid
concentration
5 mg/mL
color
off-white
UniProt accession no.
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... ABCC1(4363)
General description
Membrane Preparations for ATPase Assays are suitable for drug-efflux transporter interaction studies based on ATPase activity determination, and could be used for differentiation between transporter substrates and inhibitors.
Application
The ATPase assay is an in vitro membrane assay designed to indicate the nature of the interaction between the compound and the transporter. By measuring ATPase activity, both activation and inhibition of transporters can be investigated using membranes from baculovirus-infected insect cells or mammalian cell membranes containing high levels of human or rodent wild-type transporters. ABC transporters mediate the transport of substrates against a concentration gradient using energy derived from ATP hydrolysis, which is proportional to the transporter activity and could easily be detected with a colorimetric method.
To assess activation, ABC transporter-rich membranes are incubated with various (typically in 8) concentrations of the test article and the effect on basal ATPase activity is measured. Compounds that stimulate ATPase are generally considered substrates for the transporter. To assess inhibition, a test article′ ability to modify the activity of a given ABC transporter stimulated with its prototypical substrates is examined. The activation and inhibition tests are complementary assays.
Stimulation detected in the activation assay indicate that the compound is a transported substrate of the transporter, while interactions detected in the inhibition test indicate interaction of the test compounds with the transporter, but do not give information on the nature (substrate or inhibitor) of the interaction. In some cases inhibitors or slowly transported compounds may inhibit the baseline transporter ATPase activity as well.
Slowly transported substrates often do not stimulate the ATPase activity in a detectable extent; however the existing interaction can be identified in the inhibition assay.
To assess activation, ABC transporter-rich membranes are incubated with various (typically in 8) concentrations of the test article and the effect on basal ATPase activity is measured. Compounds that stimulate ATPase are generally considered substrates for the transporter. To assess inhibition, a test article′ ability to modify the activity of a given ABC transporter stimulated with its prototypical substrates is examined. The activation and inhibition tests are complementary assays.
Stimulation detected in the activation assay indicate that the compound is a transported substrate of the transporter, while interactions detected in the inhibition test indicate interaction of the test compounds with the transporter, but do not give information on the nature (substrate or inhibitor) of the interaction. In some cases inhibitors or slowly transported compounds may inhibit the baseline transporter ATPase activity as well.
Slowly transported substrates often do not stimulate the ATPase activity in a detectable extent; however the existing interaction can be identified in the inhibition assay.
Physical form
Supplied as frozen membrane vesicles, containing 5 mg/ml membrane protein, labeled with volume, catalog number (transporter) and date of production.
Legal Information
Distributed for SOLVO Biotechnology, Inc.
Storage Class Code
12 - Non Combustible Liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Roger G Deeley et al.
Physiological reviews, 86(3), 849-899 (2006-07-04)
Multidrug Resistance Proteins (MRPs), together with the cystic fibrosis conductance regulator (CFTR/ABCC7) and the sulfonylurea receptors (SUR1/ABCC8 and SUR2/ABCC9) comprise the 13 members of the human "C" branch of the ATP binding cassette (ABC) superfamily. All C branch proteins share
Cornelius F H Mueller et al.
Circulation research, 97(7), 637-644 (2005-08-27)
Glutathione (GSH) is the major source of intracellular sulfhydryl groups. Oxidized GSH (GSSG) can be recycled to GSH by the GSH reductase or exported from the cell. The mechanism by which GSSG is exported and the consequence of its export
J Wijnholds et al.
Nature medicine, 3(11), 1275-1279 (1997-11-14)
The multidrug resistance-associated protein (MRP) mediates the cellular excretion of many drugs, glutathione S-conjugates (GS-X) of lipophilic xenobiotics and endogenous cysteinyl leukotrienes. Increased MRP levels in tumor cells can cause multidrug resistance (MDR) by decreasing the intracellular drug concentration. The
Eva Bakos et al.
Pflugers Archiv : European journal of physiology, 453(5), 621-641 (2006-12-26)
MRP1 (ABCC1) is a peculiar member of the ABC transporter superfamily for several aspects. This protein has an unusually broad substrate specificity and is capable of transporting not only a wide variety of neutral hydrophobic compounds, like the MDR1/P-glycoprotein, but
J H Hooijberg et al.
FEBS letters, 469(1), 47-51 (2000-03-10)
The transport mechanism by which the multidrug resistance protein 1 (MRP1) effluxes cytotoxic agents out of cells is still not completely understood. However, the cellular antioxidant glutathione (GSH) has been shown to have an important role in MRP1-mediated drug transport.
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