Biotin-CCP is a biotinylated peptide used for immobilization on streptavidin matrices while retaining CCP-domain recognition motifs. Residue composition provides hydrogen-bond and hydrophobic contacts for protein interactions. Researchers employ it in affinity capture, ELISA platforms, and structural-binding studies. Applications include surface functionalization, ligand screening, and protein-peptide interface mapping.
CAT No: R2768
Biotin-CCP is a specialized biochemical conjugate that combines biotin, a widely utilized vitamin and molecular tag, with carboxy-caproic acid (CCP) as a spacer or linker. This compound is engineered to facilitate biotinylation reactions, offering enhanced flexibility and accessibility for downstream binding events. The presence of the CCP spacer extends the biotin moiety away from the target molecule, reducing steric hindrance and improving the efficiency of binding interactions with avidin or streptavidin proteins. Biotin-CCP is particularly valued in biochemical research for its role in affinity labeling, molecular tagging, and the development of highly specific detection and purification systems, making it a versatile tool in the study of proteins, nucleic acids, and other biomolecules.
Affinity purification: In biochemical workflows, Biotin-CCP is frequently employed to enable the selective isolation of biotinylated targets from complex mixtures. By covalently attaching the conjugate to proteins, peptides, or nucleic acids, researchers can exploit the strong biotin-streptavidin interaction to capture and purify these molecules using streptavidin-coated matrices. The CCP spacer enhances accessibility, improving yield and specificity during affinity capture, and is particularly beneficial when working with sterically hindered or conformationally sensitive biomolecules.
Protein labeling and detection: The compound serves as an effective reagent for biotinylating antibodies, enzymes, or other proteins, facilitating their subsequent detection in immunoassays, western blotting, or ELISA platforms. The extended linker provided by CCP minimizes potential interference with the protein's active site or binding epitopes, preserving biological function while enabling robust and sensitive detection through avidin- or streptavidin-conjugated reporters.
Surface immobilization: Biotin-CCP is widely utilized in the immobilization of biomolecules onto streptavidin- or avidin-coated surfaces, such as biosensor chips, microarrays, or bead-based assay systems. The increased spatial separation afforded by the CCP linker promotes optimal presentation of the biotinylated molecule, enhancing binding kinetics and assay reproducibility. This application is particularly important in the development of high-throughput screening platforms and bioanalytical devices.
Enzyme activity assays: Researchers often use Biotin-CCP to prepare biotinylated substrates or probes for enzyme activity studies. The compound's design allows for efficient conjugation without compromising the substrate's accessibility to the enzyme's active site. This feature supports the development of sensitive, quantitative enzyme assays, where biotinylated products can be rapidly captured and detected via streptavidin-based systems, enabling detailed kinetic and mechanistic analyses.
Protein-protein interaction studies: The biotinylation enabled by Biotin-CCP is instrumental in probing and quantifying protein-protein interactions. By attaching biotin to one interaction partner, scientists can immobilize it on a streptavidin matrix and investigate binding events with other proteins under controlled conditions. The CCP spacer ensures that the interaction interface remains accessible, reducing artifacts caused by steric hindrance and supporting accurate mapping of molecular interactions in complex biological systems.
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