MDR1/ABCB1 (E1Y7B) Rabbit mAb #13342
- WB
- IP
- IF
Supporting Data
| REACTIVITY | H |
| SENSITIVITY | Endogenous |
| MW (kDa) | 130-180 |
| Source/Isotype | Rabbit IgG |
Application Key:
- WB-Western Blotting
- IP-Immunoprecipitation
- IF-Immunofluorescence
Species Cross-Reactivity Key:
- H-Human
Product Information
Product Usage Information
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Immunoprecipitation | 1:50 |
| Immunofluorescence (Immunocytochemistry) | 1:1600 - 1:3200 |
Storage
Protocol
Specificity / Sensitivity
MDR1/ABCB1 (E1Y7B) Rabbit mAb recognizes endogenous levels of total MDR1 (ABCB1) protein.
Species Reactivity:
Human
Source / Purification
Monoclonal antibody is produced by immunizing animals with recombinant protein specific to human MDR1 protein.
Background
MDR1/ABCB1 belongs to the Mdr/Tap subfamily of the ATP-binding cassette transporter superfamily (1). Multidrug resistance 1 (MDR1) serves as an efflux pump for xenobiotic compounds with broad substrate specificity. MDR1 substrates include therapeutic agents such as actinomycin D, etoposide, imatinib, and doxorubicin, as well as endogenous molecules including β-amyloids, steroid hormones, lipids, phospholipids, cholesterol, and cytokines (2). Research studies have shown that MDR1 reduces drug accumulation in cancer cells, allowing the development of drug resistance (3-5). On the other hand, MDR1 expressed in the plasma membrane of cells in the blood-brain, blood-cerebral spinal fluid, or blood-placenta barriers restricts the permeability of drugs into these organs from the apical or serosal side (6,7). MDR1 is also expressed in normal tissues with excretory function such as small intestine, liver, and kidney (7). Intracellular MDR1 has been detected in the ER, vesicles, and nuclear envelope, and has been associated with cell trafficking machinery (8). Other reported functions of MDR1 include viral resistance, cytokine trafficking (9,10), and lipid homeostasis in the peripheral and central nervous system (11-13).
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- Chen, G. et al. (1997) J Biol Chem 272, 5974-82.
- Brinkmann, U. and Eichelbaum, M. (2001) Pharmacogenomics J 1, 59-64.
- Fromm, M.F. (2004) Trends Pharmacol Sci 25, 423-9.
- Miller, D.S. et al. (2008) Pharmacol Rev 60, 196-209.
- Ambudkar, S.V. et al. (1999) Annu Rev Pharmacol Toxicol 39, 361-98.
- Raviv, Y. et al. (2000) FASEB J 14, 511-5.
- Meijer, O.C. et al. (2003) J Endocrinol 178, 13-8.
- Karssen, A.M. et al. (2002) J Endocrinol 175, 251-60.
- Jeannesson, E. et al. (2009) Clin Chim Acta 403, 198-202.
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