Detection of ErbB2/Her2 in 3T3‑L1 Mouse Cell Line by Flow Cytometry. 3T3‑L1 mouse embryonic fibroblast adipose-like cell line was stained with Rat Anti-Mouse ErbB2/Her2 Alexa Fluor® 594‑conjugated Monoclonal Antibody (Catalog # FAB6744T, filled histogram) or isotype control antibody (Catalog # IC005T, open histogram). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
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.
ErbB2, also known as CD340, Neu, and Her2 (Human Epidermal Growth Factor Receptor 2), is a 180-185 kDa type I transmembrane glycoprotein that is a member of the Class I family of tyrosine kinase receptors. ErbB2 is widely expressed on and in epithelial cells, and plays a role in development, cancer, communication at the neuromuscular junction, and regulation of cell growth and differentiation. The mouse ErbB2 extracellular domain (ECD, amino acids 23-653) contains two "L" domains and two cystine-rich domains. Within the ECD, it shares 85% and 94% amino acid sequence identity with human and rat ErbB2 ECD, respectively. The protease ADAM10 releases a 95-110 kDa soluble fragment of ErbB2 from the cell surface. ErbB2 is also known to undergo alternative splicing, and to appear in the nucleus as part of a transcriptional regulatory complex. ErbB2 has no identified ligands, but heterodimerizes with ErbB1 (EGF R), ErbB3, or ErbB4 to form higher affinity signaling complexes. It also appears to form a complex with Plexin B1, c-met, and Mucin-4. Within those complexes, non-EGF ligands are likely involved. The ErbB2/ErbB3 heterodimer is expressed in the majority of breast, skin, ovary and gastrointestinal tumors and transduces a highly mitogenic signal in response to neuregulin 1 (NRG1; heuregulin 1) or NRG2.
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