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 characterized by the presence of a dinitrophenyl (Dnp) group and a C-terminal amidation. As a heptapeptide sequence incorporating both natural and modified amino acid residues, it offers unique physicochemical and functional properties that make it valuable in a variety of biochemical research contexts. The Dnp moiety serves as a chromophoric label, enabling sensitive detection and quantification, while the specific amino acid arrangement provides a versatile scaffold for investigating peptide-protein interactions, enzymatic specificity, and structure-activity relationships. Its design allows for precise exploration of peptide function and dynamics in controlled experimental systems.
Enzyme substrate studies: The Dnp-conjugated peptide is widely employed as a chromogenic substrate for proteolytic enzyme assays, particularly in the study of serine proteases and related peptidases. The presence of the dinitrophenyl group at the N-terminus provides a strong UV-absorbing chromophore, facilitating real-time spectrophotometric monitoring of enzymatic cleavage events. Researchers use this peptide to determine kinetic parameters, assess enzyme specificity, and screen for potential inhibitors by quantifying the release or modification of the chromophore during catalysis.
Peptide-protein interaction analysis: The defined sequence and structural features of this peptide make it a suitable probe for mapping binding sites and characterizing the affinity of protein-peptide interactions. By incorporating the Dnp label, the peptide enables sensitive detection in binding assays such as fluorescence quenching, FRET, or ELISA-based formats. These studies support the elucidation of molecular recognition mechanisms, help identify critical residues involved in binding, and contribute to the rational design of peptide-based modulators.
Structure-activity relationship (SAR) investigations: The modular nature of the peptide, with its specific sequence and functional group modifications, allows systematic evaluation of how individual residues and terminal modifications influence biological activity. Researchers utilize this compound to generate SAR data by comparing its activity profile to related analogs, thereby uncovering key determinants of function and guiding the optimization of peptide-based tools or leads for further study.
Analytical method development: The robust chromophoric signature of the Dnp group enables the peptide's use as a standard or reference in the calibration and validation of analytical techniques, including HPLC, mass spectrometry, and UV-Vis spectroscopy. Its defined composition and stability make it a reliable marker for testing separation efficiency, quantification accuracy, and detection limits in peptide analysis workflows.
Peptide stability and metabolism studies: The sequence and modifications present in this peptide provide a model system for assessing the stability of peptide drugs or probes in biological matrices. Researchers employ it to investigate proteolytic degradation patterns, evaluate the impact of terminal amidation on metabolic resistance, and study the influence of sequence context on peptide half-life. Such insights are critical for optimizing peptide design for research and biotechnological applications.
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