ERBB2IP protein (1003-1018)

ERBB2IP protein (1003-1018) is a synthetic peptide fragment derived from the C-terminal region of the human ERBB2-interacting protein, also known as Erbin. As a specialized peptide corresponding to amino acids 1003 to 1018 of the ERBB2IP sequence, it serves as a valuable molecular tool for dissecting protein-protein interactions, signaling dynamics, and structural motifs within the context of cell adhesion and receptor tyrosine kinase signaling. Its defined sequence and origin from a critical functional domain make it particularly relevant for investigating the molecular mechanisms underlying ERBB2/HER2 signal transduction and its regulatory complexes. The availability of this peptide fragment supports a range of advanced research applications in molecular biology, cell signaling, and proteomics.

Protein-Protein Interaction Studies: Researchers frequently employ this ERBB2IP-derived peptide to probe the specific binding interfaces between ERBB2IP and its interacting partners, such as the ERBB2/HER2 receptor and other scaffolding proteins. By utilizing the peptide in pull-down assays, competition binding experiments, or surface plasmon resonance analyses, scientists can delineate the minimal binding motifs required for complex formation, map interaction domains, and investigate the structural determinants critical for ERBB2IP-mediated signal modulation. This approach enables a deeper understanding of how ERBB2IP orchestrates signaling assemblies at the plasma membrane and contributes to the spatial regulation of cellular responses.

Antibody Generation and Epitope Mapping: The defined amino acid sequence of the ERBB2IP protein (1003-1018) peptide makes it an ideal antigen for the production of sequence-specific antibodies. Immunization with this peptide can yield polyclonal or monoclonal antibodies selective for the C-terminal region of ERBB2IP, facilitating the detection, quantification, and localization of the endogenous protein in diverse biological samples. Furthermore, the peptide can be utilized in epitope mapping studies to identify antibody binding sites, assess cross-reactivity, and validate antibody specificity, thereby supporting the development of reliable immunoassays and diagnostic reagents for ERBB2IP-related research.

Signal Transduction Analysis: The peptide fragment serves as a functional probe in studies aimed at dissecting the molecular mechanisms of ERBB2/HER2 signal transduction. By acting as a competitive inhibitor or decoy, it can interfere with the recruitment of ERBB2IP to receptor complexes, allowing researchers to assess the downstream consequences of disrupted ERBB2IP signaling. Such experiments provide valuable insights into the role of ERBB2IP in modulating pathways involved in cell proliferation, differentiation, and polarity, and help clarify its contribution to the dynamic regulation of receptor tyrosine kinase networks.

Peptide-Protein Interaction Screening: In high-throughput and targeted screening platforms, the ERBB2IP (1003-1018) peptide can be immobilized or labeled for use in peptide array technologies, phage display, or affinity-based assays. These applications enable systematic identification of novel binding partners, characterization of interaction affinities, and exploration of sequence determinants governing specificity. The resulting data support the rational design of modulators, inhibitors, or mimetics that target ERBB2IP-mediated pathways, advancing both basic research and early-stage drug discovery initiatives.

Structural and Functional Characterization: The synthetic peptide provides a tractable system for investigating the conformational properties and functional motifs within the ERBB2IP C-terminal region. Techniques such as circular dichroism spectroscopy, nuclear magnetic resonance, or mass spectrometry can be employed to analyze its secondary structure, post-translational modifications, or susceptibility to proteolytic cleavage. These studies contribute to a mechanistic understanding of how ERBB2IP domains adopt specific conformations and interact with cellular partners, informing broader efforts to elucidate protein structure-function relationships in cell signaling contexts.

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