CEF20 is an HLA-A*0201-restricted epitope from cytomegalovirus pp65 (495-503).
CEF20 is a synthetic peptide compound recognized for its specialized sequence and functional properties, making it a valuable tool in peptide research and biochemical studies. As a custom peptide, CEF20 is designed to support investigations into protein interactions, antigen-specific immune responses, and cellular signaling pathways. Its defined amino acid composition allows for precise experimental manipulation, contributing to a deeper understanding of peptide-mediated biological processes. The compound's stability and solubility characteristics enhance its suitability for a range of in vitro applications, positioning it as a reliable resource for researchers working at the interface of immunology, molecular biology, and biochemical assay development.
Immunological research: CEF20 is frequently employed as a reference antigen in studies of T cell activation and specificity. Its defined epitope sequence enables the assessment of major histocompatibility complex (MHC) class I and II presentation, facilitating detailed analyses of T cell receptor (TCR) recognition and downstream immune signaling events. Researchers utilize this peptide to map immune responses, validate antigen-processing pathways, and optimize protocols for immunomonitoring in experimental systems.
Epitope mapping: The peptide's sequence specificity makes it an ideal substrate for epitope mapping experiments, where it serves to delineate the precise regions of protein antigens recognized by antibodies or T cells. By incorporating CEF20 into peptide libraries or microarray platforms, scientists can systematically probe the fine specificity of immune recognition, advancing the characterization of antigen-antibody or antigen-TCR interactions. These insights are critical for vaccine design, immunodiagnostics, and fundamental immunological research.
Peptide-based assay development: As a well-characterized synthetic peptide, CEF20 is widely used in the development and validation of peptide-based assays, including enzyme-linked immunosorbent assays (ELISA), enzyme-linked immunospot (ELISpot) assays, and flow cytometry-based detection methods. Its consistent performance as a positive control or standard allows for reproducible quantification of immune reactivity, supporting assay calibration and quality control in both academic and industrial laboratory settings.
Cellular activation studies: CEF20 can be utilized to stimulate specific immune cell subsets in vitro, enabling the investigation of cellular activation, cytokine production, and functional differentiation. By providing a defined stimulus, the peptide supports mechanistic studies into the signaling pathways and effector functions of T lymphocytes, natural killer cells, or other peptide-responsive populations. These applications are integral to dissecting the molecular basis of immune responses and evaluating novel immunomodulatory strategies.
Peptide synthesis and modification research: The compound also serves as a model substrate in peptide synthesis and modification studies. Its sequence and chemical properties are conducive to method development for solid-phase peptide synthesis (SPPS), post-synthetic modifications, and analytical characterization. Researchers leverage CEF20 to optimize coupling conditions, assess peptide purity, and validate analytical methods such as high-performance liquid chromatography (HPLC) and mass spectrometry, thereby enhancing the reliability and scalability of peptide production workflows.
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