Detection of Human BCR by Western Blot. Western blot shows lysates of HepG2 human hepatocellular carcinoma cell line, K562 human chronic myelogenous leukemia cell line, and MCF‑7 human breast cancer cell line. PVDF membrane was probed with 1 µg/mL of Human BCR Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5129) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for BCR at approximately 155 - 165 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
BCR (Breakpoint cluster region protein) is a novel 155‑165 kDa Ser/Thr protein kinase. It is found in fibroblasts and hematopoietic cells, interacts with 14-3-3, and serves as a natural inhibitor of the growth factor-associated c-Abl nonreceptor protein tyrosine kinase. Human BCR is 1271 amino acids (aa) in length. It contains a coiled-coil dimerization motif (aa 28‑68), a Ser/Thr kinase region (aa 176‑426), one DH domain (aa 498‑691) and a Rho-Gap region (aa 1054‑1248). The N-terminal aa 1‑902 and 1‑927 are known to contribute to the BCR‑ABL oncoprotein. BCR likely forms homodimers and 650 kDa homotetramers. An alternate start site exists at Met498, while other isoforms show a deletion of aa 961‑1004, plus a 61 and 37 aa substitution for aa 1‑488. Over aa 1‑426, human BCR is 89% aa identical to mouse BCR.
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