Mucin-1
CAT No: ta-492
MUC1-VNTR1 is a synthetic peptide corresponding to a single tandem repeat unit of the variable number tandem repeat (VNTR) region of the human mucin 1 (MUC1) glycoprotein. As a key component of the extracellular domain of MUC1, this peptide is characterized by its highly glycosylated sequence motif, which is frequently overexpressed and aberrantly glycosylated in a variety of epithelial cancers. The unique biochemical features of the VNTR region make it a valuable molecular tool for investigating the structure, function, and immunogenic properties of MUC1 in both normal and pathological contexts. Its defined sequence and relevance to mucin biology provide a controlled system for researchers studying glycoprotein interactions, immune recognition, and the development of peptide-based analytical assays.
Epitope Mapping: MUC1-VNTR1 serves as a precise substrate for mapping antibody and T-cell epitopes within the MUC1 VNTR domain. The repeat sequence is recognized by a range of monoclonal antibodies and immune receptors, making the peptide an essential reagent for defining the specificity and binding characteristics of anti-MUC1 immune responses. Researchers utilize this peptide to delineate the minimal recognition motifs, evaluate cross-reactivity, and optimize antibody development for both analytical and research applications.
Cancer Biomarker Research: The peptide is widely employed in cancer biomarker studies due to its direct relevance to tumor-associated MUC1 expression. Its sequence mimics the core region of MUC1 that is frequently altered in malignancies, facilitating investigations into the role of aberrant glycosylation and expression patterns in tumor progression. Scientists use MUC1-VNTR1 to model tumor-associated antigens in vitro, providing insights into the molecular mechanisms underlying cancer cell recognition and immune evasion.
Assay Development: In analytical biochemistry and immunology, MUC1-VNTR1 is used as a standard or control for the development and validation of immunoassays targeting MUC1. The defined peptide sequence enables the establishment of robust enzyme-linked immunosorbent assays (ELISAs), Western blots, and other antibody-based detection methods. Its use ensures specificity and reproducibility in quantifying MUC1-related analytes, supporting both basic research and translational studies.
Peptide-Protein Interaction Studies: The peptide's well-characterized sequence and structural features make it an ideal probe for examining peptide-protein and peptide-glycan interactions. Researchers leverage MUC1-VNTR1 to study the binding properties of lectins, glycosyltransferases, and other proteins involved in mucin processing and modification. These studies are critical for elucidating the biochemical pathways that regulate mucin function and for identifying potential targets for modulating glycoprotein interactions in disease models.
Peptide Synthesis and Modification Research: MUC1-VNTR1 also provides a model system for advancing peptide synthesis and post-synthetic modification techniques. Its repetitive and glycosylation-prone sequence presents unique challenges and opportunities for solid-phase peptide synthesis, glycopeptide engineering, and the incorporation of site-specific modifications. Researchers use this peptide to optimize synthetic protocols, evaluate conjugation strategies, and develop novel approaches for generating structurally defined mucin mimetics for biochemical and structural studies.
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