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Key Product Details

Species Reactivity




Flow Cytometry


Allophycocyanin (Excitation = 620-650 nm, Emission = 660-670 nm)

Antibody Source

Monoclonal Mouse IgG2B Clone # 5D3

Product Summary for Human ABCG2 APC-conjugated Antibody


3T3 cells transduced with human ABCG2


Detects human ABCG2 in flow cytometry and immunocytochemistry.







Scientific Data Images for Human ABCG2 APC-conjugated Antibody

Detection of ABCG2 antibody in MCF-7 Human Cell Line antibody by Flow Cytometry.

Detection of ABCG2 in MCF‑7 Human Cell Line by Flow Cytometry.

MCF-7 human breast cancer cell line was stained with Mouse Anti-Human ABCG2 APC-conjugated Monoclonal Antibody (Catalog # FAB995A, filled histogram) or isotype control antibody (Catalog # IC0041A, open histogram). View our protocol for Staining Membrane-associated Proteins.

Applications for Human ABCG2 APC-conjugated Antibody

Recommended Usage

Flow Cytometry

10 µL/106 cells
Sample: MCF‑7 human breast cancer cell line
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Published Applications

Read 6 publications using FAB995A in the following applications:

Formulation, Preparation, and Storage


Protein A or G purified from hybridoma culture supernatant


Supplied in a saline solution containing BSA and Sodium Azide.


The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: ABCG2

Hematopoietic stem cells are known to express a membrane transporter molecule, known as P-glycoprotein (Pgp), that is encoded by the multidrug resistance gene 1 (MDR1) (1, 2). Expression of Pgp appears to confer a proliferative advantage to stem cells through its anti-apoptotic effects (3, 4). An additional transporter molecule known as ABCG2 (ATP-binding cassette gene 2) or Bcrp1 (Breast cancer resistance protein 1), first identified in a breast cancer cell line (5), is expressed on stem cells (6). ABCG2 belongs to a family of molecules that span the cell membrane six times and can exist as either homo or hetero dimers linked by a short intracellular flexible linker region that plays an important role in the efflux of a wide range of substrates (7, 8). Although these transporter molecules have initially been thought to play a role in drug resistance, they have been found to have utility in better characterizing primitive stem cells. For example, the “side-population” of hematopoietic stem cells, characterized by their inability to retain high levels of the intracellular staining dyes Hoechst 33342 and Rhodamine 123, has been found to express high levels of ABCG2. Of interest is the observation that ABCG2 function has been linked to the efflux of the Hoechst dye (6). Furthermore, there is now evidence that this monoclonal can be used as a cell surface marker to identify hematopoietic stem cells within the bone marrow fraction of lineage negative cells (6). The expression of ABCG2 appears greatest on CD34- cells and is downregulated with the acquisition of CD34 on the cell surface (6).


  1. Chaudhary, P.M. and I.B. Roninson (1991) Cell 66:85.
  2. Sorrentino, B.P. et al. (1995) Blood 86:491.
  3. Pallis, M. and N. Russell (2000) Blood 95:2897.
  4. Johnstone, R.W. et al. (1999) Blood 93:1075.
  5. Doyle, L.A. et al. (1998) Proc. Natl. Acad. Sci. USA 95:15665.
  6. Zhou, S. et al. (2001) Nat. Medicine 7:1028.
  7. Hrycyna, C.A. et al. (1998) Biochem. 37:13660.
  8. Bunting, K.D. (2002) Stem Cells 20:11.

Long Name

ATP-binding Cassette Transporter G2

Alternate Names


Entrez Gene IDs

9429 (Human)

Gene Symbol


Additional ABCG2 Products

Product Documents for Human ABCG2 APC-conjugated Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human ABCG2 APC-conjugated Antibody

For research use only