ABC 21; ABC B4; ABC21; ABCB 4; Abcb4; ABCB4 protein; ATP binding cassette sub family B MDR/TAP member 4; ATP binding cassette sub family B member 4; ATP-binding cassette sub-family B member 4; GBD1; ICP3; MDR 3; MDR2; MDR2/3; MDR3; MDR3 P glycoprotein; MDR3 P gp; MDR3_HUMAN; Multidrug resistance protein 3; Multiple drug resistance 3; P glycoprotein 3; P-glycoprotein 3; PFIC 3; PFIC3; PGY 3; PGY3;
WB 1:500-1:2000, IF/ICC 1:100-1:500, ELISA(peptide) 1:20000-1:40000
*The optimal dilutions should be determined by the end user.
Pig(100%), Bovine(92%), Rabbit(100%), Dog(100%)
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
MDR3 Antibody detects endogenous levels of total MDR3.
Please cite this product as: Affinity Biosciences Cat# DF12513, RRID:AB_2845475.
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.Store at -20 °C.Stable for 12 months from date of receipt.
A synthesized peptide derived from human MDR3, corresponding to a region within the internal amino acids.
Observed Mol.Wt.: 142kD.
Predicted Mol.Wt.: 142kDa(Calculated)..
Energy-dependent phospholipid efflux translocator that acts as a positive regulator of biliary lipid secretion. Functions as a floppase that translocates specifically phosphatidylcholine (PC) from the inner to the outer leaflet of the canalicular membrane bilayer into the canaliculi of hepatocytes. Translocation of PC makes the biliary phospholipids available for extraction into the canaliculi lumen by bile salt mixed micelles and therefore protects the biliary tree from the detergent activity of bile salts. Plays a role in the recruitment of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and sphingomyelin (SM) molecules to nonraft membranes and to further enrichment of SM and cholesterol in raft membranes in hepatocytes. Required for proper phospholipid bile formation (By similarity). Indirectly involved in cholesterol efflux activity from hepatocytes into the canalicular lumen in the presence of bile salts in an ATP-dependent manner. Promotes biliary phospholipid secretion as canaliculi-containing vesicles from the canalicular plasma membrane. In cooperation with ATP8B1, functions to protect hepatocytes from the deleterious detergent activity of bile salts. Does not confer multidrug resistance (By similarity).
Phosphorylated. Phosphorylation on Thr-34 is required for PC efflux activity. Phosphorylation occurs on serine and threonine residues in a protein kinase A- or C-dependent manner. May be phosphorylated on Thr-44 and Ser-49.
Cell membrane>Multi-pass membrane protein. Apical cell membrane>Multi-pass membrane protein. Membrane raft. Cytoplasm. Cytoplasmic vesicle>Clathrin-coated vesicle.
Note: Localized at the apical canalicular membrane of the epithelial cells lining the lumen of the bile canaliculi and biliary ductules (By similarity). Transported from the Golgi to the apical bile canalicular membrane in a RACK1-dependent manner (PubMed:19674157). Redistributed into pseudocanaliculi formed between cells in a bezafibrate- or PPARA-dependent manner (PubMed:15258199). Localized preferentially in lipid nonraft domains of canalicular plasma membranes (PubMed:23468132).
May interact with RACK1. Interacts with HAX1 (By similarity).
Belongs to the ABC transporter superfamily. ABCB family. Multidrug resistance exporter (TC 3.A.1.201) subfamily.
· Environmental Information Processing > Membrane transport > ABC transporters.
(Blocking peptide available as DF12513-BP)
Tips: For phospho antibody, we provide phospho peptide（0.5mg) and non-phospho peptide(0.5mg).
Blocking peptides are peptides that bind specifically to the target antibody and block antibody binding. These peptide usually contains the epitope recognized by the antibody. Antibodies bound to the blocking peptide no longer bind to the epitope on the target protein. This mechanism is useful when non-specific binding is an issue, for example, in Western blotting (immunoblot) and immunohistochemistry (IHC). By comparing the staining from the blocked antibody versus the antibody alone, one can see which staining is specific; Specific binding will be absent from the western blot or immunostaining performed with the neutralized antibody.
Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 10 mg/ml.The purity is >90%,tested by HPLC and MS.Storage Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.
This product is for research use only. Not for use in diagnostic or therapeutic procedures.