Product Pathways - Tyrosine Kinase / Adaptors
Bcr Antibody #3902
|W IF-IC F||H M R Pg||Endogenous||130, 160 (Bcr); 210 (Bcr-Abl)||Rabbit|
Reactivity Key: H=Human M=Mouse R=Rat Pg=Pig
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.
Specificity / Sensitivity
Bcr Antibody detects endogenous levels of total Bcr as well as the 210 kDa Bcr-Abl fusion protein.
Source / Purification
Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to the amino-terminal sequence of human Bcr. Antibodies are purified by protein A and peptide affinity chromatography.
Western blot analysis of extracts from K562, MCF-7 and HepG2 cells, using Bcr Antibody.
Flow cytometric analysis of K562 cells, untreated (green) or Gleevec® (STI571)-treated (blue), using Bcr Antibody compared to a nonspecific negative control antibody (red).
Immunofluorescent analysis of PAE cells, using Bcr Antibody (left) or the same antibody preincubated with Bcr-specific peptide (right).
The Bcr gene was orginally identified by its presence in the chimeric Bcr-Abl oncogene (1). The amino-terminal region of Bcr contains an oligomerization domain, a serine/threonine kinase domain, and a region that binds SH2 domains. The middle of the protein has a PH domain and a region of sequence similarity to the guanine nucleotide exchange factors for the Rho family of GTP binding proteins. The carboxy-terminal region may be involved in a GTPase activating function for the small GTP-binding protein Rac (2,3). The function of wild type Bcr in cells remains unclear. PDGF receptor may use Bcr as a downstream signaling mediator (4). Research studies have shown that the Bcr-Abl fusion results in production of a constitutively active tyrosine kinase, which causes chronic myelogenous leukemia (CML) (5). Tyr177 of Bcr is phosphorylated in the Bcr-Abl fusion protein, which plays an important role in transforming the activity of Bcr-Abl (6). Phosphorylated Tyr177 provides a docking site for Gab2 and GRB2 (7,8).
- Groffen, J. et al. (1984) Cell 36, 93-99.
- Maru, Y. et al. (1991) Cell 67, 459-468.
- Che, W. et al. (2001) Circulation 104, 1399-1406.
- Abe, J. I. et al. (2001) Ann. N.Y. Acad. Sci. 947, 341-343.
- Voncken, J. W. et al. (1995) Cell 80, 719-728.
- He, Y. et al. (2002) Blood 99, 2957-2968.
- Sattler, M. et al. (2002) Cancer Cell 1, 479-492.
- Warmuth, M. et al. (1995) J. Biol. Chem. 272, 33260-33270.
- O'Hare, T. et al. (2011) Blood 118, 5250-4. Applications: Western Blotting
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- 7720 Prestained Protein Marker, Broad Range (Premixed Format)
- 7727 Biotinylated Protein Ladder Detection Pack
- 7003 20X LumiGLO® Reagent and 20X Peroxide
For Research Use Only. Not For Use In Diagnostic Procedures.