Receptor tyrosine-protein kinase erbB-2 (466-474)

Receptor tyrosine-protein kinase erbB-2 (466-474) is a synthetic peptide fragment corresponding to amino acid residues 466 through 474 of the erbB-2 protein, also known as HER2/neu. This peptide is derived from a region of the intracellular domain of the receptor tyrosine kinase erbB-2, which plays a critical role in cell signaling pathways associated with cell growth, differentiation, and survival. The HER2/neu receptor is a member of the epidermal growth factor receptor (EGFR) family and is frequently studied for its involvement in signal transduction and oncogenic transformation. As a defined peptide sequence, this product serves as a valuable tool for dissecting the molecular mechanisms underlying erbB-2 function and its interactions within cellular systems.

Epitope mapping: The synthetic peptide corresponding to erbB-2 residues 466-474 is widely utilized in epitope mapping studies to identify antibody binding sites and characterize immune recognition of the HER2/neu receptor. By providing a defined linear epitope, it enables researchers to assess the specificity of monoclonal and polyclonal antibodies targeting this region, facilitating the development and validation of immunoassays and antibody reagents for both basic and translational research.

Signal transduction research: As an intracellular segment of the erbB-2 receptor, the 466-474 peptide is applied in studies investigating receptor phosphorylation, downstream signaling events, and protein-protein interactions. It serves as a substrate or competitive inhibitor in kinase assays and binding studies, allowing researchers to probe the functional consequences of post-translational modifications or to screen for interaction partners that recognize this domain of the receptor.

Peptide-based assay development: The defined sequence of this HER2/neu fragment is well-suited for incorporation into peptide-based assays, including enzyme-linked immunosorbent assays (ELISA), surface plasmon resonance (SPR), and fluorescence polarization techniques. These assays are instrumental for quantifying antibody or ligand binding, studying receptor dynamics, and evaluating the specificity of molecular interactions involving the erbB-2 intracellular region.

Immunogenicity studies: Researchers employ the erbB-2 (466-474) peptide in immunogenicity assessments to evaluate immune responses directed against this segment of the HER2/neu receptor. Such studies are important for understanding antigenicity, T-cell epitope recognition, and immune profiling in the context of tumor immunology or vaccine research, where defined peptides are essential for dissecting the cellular and humoral immune responses.

Quality control and peptide synthesis validation: The synthetic peptide is also used as a reference standard or quality control material in peptide synthesis workflows. Its well-characterized sequence and defined length make it suitable for analytical method development, including HPLC, mass spectrometry, and amino acid analysis, supporting the validation of custom peptide production and ensuring consistency across research and manufacturing processes.

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