Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 contains a dinitrophenyl group that enhances chromophoric detection and influences hydrophobic packing. The sequence combines aromatic and basic residues useful for studying peptide-protein interactions. Researchers examine its conformational preferences and solvent-dependent folding. Its tailored design aids spectrophotometric kinetic analyses.
CAT No: 10-101-254
CAS No:121282-17-5
Synonyms/Alias:MMP Substrate, Fluorogenic
Chemical Name:N-(2,4-Dinitrophenyl)-Pro-Leu-Gly-Leu-Trp-Ala-D-Arg amide
Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 is a synthetic peptide featuring a distinct sequence and a Dnp (2,4-dinitrophenyl) label, which enhances its utility in a variety of biochemical and molecular biology applications. The peptide's unique arrangement of amino acids and its C-terminal amidation confer increased stability and resistance to enzymatic degradation, making it an ideal candidate for in vitro research environments. Its physicochemical properties, including hydrophobic and aromatic residues, facilitate specific interactions with target proteins, while the Dnp tag serves as a chromophoric group, enabling sensitive detection and quantification. Researchers often select this peptide for its versatility in experimental design, as it can be readily incorporated into assay systems that require robust signal readouts and reproducible performance.
Enzyme Substrate Assays: Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 is widely employed as a substrate in protease activity assays, particularly for characterizing the specificity and kinetics of serine and cysteine proteases. The presence of the Dnp group allows for straightforward spectrophotometric monitoring of peptide cleavage, as enzymatic hydrolysis leads to a measurable change in absorbance. This property streamlines the process of screening enzyme inhibitors, optimizing reaction conditions, and elucidating proteolytic mechanisms, making the peptide a valuable tool in enzymology research.
Fluorescence Quenching Studies: The Dnp moiety in this peptide acts as an effective quencher in fluorescence-based assays, enabling studies of peptide-protein interactions, conformational changes, and molecular dynamics. By pairing Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 with suitable fluorophore-labeled partners, researchers can investigate binding affinities, map interaction sites, and monitor real-time structural rearrangements. These capabilities are particularly useful in drug discovery programs and structural biology investigations, where understanding the dynamics of biomolecular complexes is essential.
Peptidase Specificity Profiling: This peptide serves as a model substrate for profiling the substrate preferences of various peptidases and endopeptidases. By systematically modifying its sequence or employing it in competitive assays, scientists can delineate enzyme recognition motifs, characterize cleavage sites, and assess the impact of amino acid substitutions. Such studies contribute to the rational design of selective inhibitors and the development of novel therapeutic strategies targeting proteolytic pathways.
Signal Amplification in Immunoassays: Utilizing the Dnp tag, Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 can be incorporated into immunoassay formats where signal amplification is required. The chromogenic properties of Dnp facilitate the detection of antibody-peptide interactions with high sensitivity, supporting the development of robust ELISA systems and other diagnostic platforms. These applications are instrumental in biomarker discovery and the validation of new analytical targets in complex biological samples.
Peptide Mapping and Mass Spectrometry: In proteomics workflows, this peptide is used as an internal standard or reference compound for peptide mapping and mass spectrometric analysis. Its defined sequence and mass make it a reliable calibrant for instrument performance verification, method development, and quantitative analyses. The integration of Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 into these workflows ensures accurate peptide identification, enhances reproducibility, and supports high-throughput screening initiatives in protein research.
Biochemical Pathway Elucidation: Dnp-Pro-Leu-Gly-Leu-Trp-Ala-DArg-NH2 is also valuable in dissecting biochemical pathways involving proteolytic processing or peptide signaling. By tracking its fate in cell-free systems or model organisms, researchers can gain insights into the roles of specific enzymes, regulatory factors, and post-translational modifications. These studies provide a deeper understanding of cellular regulation and protein turnover, informing the development of new research tools and experimental approaches in molecular and cellular biology.
1. Cell-based adhesion assays for isolation of snake venom’s integrin antagonists
2. Adipose tissue is a key organ for the beneficial effects of GLP-2 metabolic function
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