• USA Home
  • M7317 - Monoclonal Anti-MDR3 P-Glycoprotein antibody produced in mouse

M7317 Sigma-Aldrich

Monoclonal Anti-MDR3 P-Glycoprotein antibody produced in mouse

250 μg/mL, clone P3II-26, tissue culture supernatant



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Multi-Drug Resistance, Antibodies to Drug Efflux Pumps,
conjugate   unconjugated
clone   P3II-26, monoclonal
biological source   mouse
application(s)   immunocytochemistry: 1:20-1:50 using acetone-fixed cytospin preparations
  immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable (not suitable for human tissues)
  immunohistochemistry (frozen sections): 1:20 using acetone-fixed sections
  western blot: suitable
species reactivity   human
shipped in   dry ice
storage temp.   −20°C
antibody form   tissue culture supernatant
isotype   IgG2b
Quality Level   200
antibody product type   primary antibodies
concentration   250 μg/mL
UniProt accession no.   P21439
Gene Information   human ... ABCB11(8647), ABCB4(5244)


General description

Multidrug resistance protein 3 (MDR3) is also known as ATP binding cassette subfamily B member 4. It is expressed in hepatocytes and made up of 1279 amino acids. The gene encoding it is localized on human chromosome 7q21.12 and consists of 27 exons.


Reacts with an internal epitope of MDR3. Does not cross-react with human MDR1 P-gp.


MDR3 P-gp (amino acids 629-692) GST fusion protein.

Physical form

Supplied in serum-free medium containing 0.7% bovine serum albumin and 0.1% sodium azide.


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.

Biochem/physiol Actions

Multidrug resistance protein 3 (MDR3) acts as an ATP-dependent exporter and transfers phospholipids, particularly phosphatidylcholine (PC), into bile. Dysfunctioning of MDR3 leads to excess of bile salts in primary bile and further leads to liver diseases.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

Please Enter a Lot Number
Protocols & Articles


ABC Transporters and Cancer Drug Resistance

Chemotherapy is the treatment of choice against many types of cancer. However, over time chemotherapeutic drugs can become less effective due to the development of resistance that involves a group of...
BioFiles 2007, 2.4, 7.
Keywords: Absorption, Cancer, Clinical, Cloning, Combinatorial synthesis, Diseases, Enzymology, Gene expression, Genetic, Immunology, Pharmaceutical, Reductions, Transfection

Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Content

Antibody Explorer | Buy Primary Antibodies & Secondary Antibodies

Primary, Secondary and Recombinant Monoclonal Antibodies Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay...
Keywords: Alzheimer Disease, Cancer, Chromatin immunoprecipitation, Diagnostic, Enzyme-linked immunosorbent assay, Flow cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Neuroscience, Western blot

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?