RW4 is a short cationic peptide combining arginine and tryptophan residues that enhance membrane affinity. Aromatic-cationic synergy supports deep insertion into hydrophobic environments. Researchers explore its folding and aggregation in micelles and bilayers. Applications include membrane-active peptide design, CPP studies, and binding-interface analysis.
CAT No: R2821
Synonyms/Alias:H-RWRWRWRW-NH2; RWRWRWRW-NH2; RWRWRWRW; RW4; antimicrobial; antifungal; RW 4; AM-152; AM152
RW4 is a synthetic peptide compound designed for advanced research applications in the field of biochemistry and molecular biology. Characterized by its defined amino acid sequence, RW4 serves as a valuable tool for probing protein-protein interactions, elucidating signaling pathways, and facilitating the study of peptide-based recognition events. Its structural features make it particularly suitable for investigations into molecular recognition, receptor binding, and the functional characterization of peptide motifs. As a research-use-only reagent, RW4 offers a controlled and reproducible platform for experimental studies requiring high specificity and well-defined biochemical properties.
Peptide-Protein Interaction Studies: RW4 is frequently employed as a molecular probe in the analysis of peptide-protein interactions. Its sequence enables researchers to dissect binding affinities and specificities within complex biological systems, supporting the identification of interaction partners and the mapping of binding domains. By using this peptide in assays such as surface plasmon resonance, co-immunoprecipitation, or fluorescence polarization, scientists can gain quantitative and qualitative insights into the dynamics of protein recognition and complex formation, which are foundational for understanding cellular signaling networks.
Receptor Binding Assays: The defined structure of RW4 makes it an excellent candidate for receptor binding studies, particularly in the context of cell-surface or intracellular peptide receptors. Researchers utilize this peptide to characterize ligand-receptor interactions, determine binding kinetics, and evaluate receptor selectivity. These studies contribute to the elucidation of signal transduction mechanisms and can inform the rational design of peptide-based modulators or inhibitors for further experimental use in cellular models.
Peptide Synthesis and Modification Research: RW4 serves as a model substrate for the development and optimization of peptide synthesis protocols, including solid-phase peptide synthesis (SPPS) and post-synthetic modifications. Its application in synthesis workflow validation allows for the assessment of coupling efficiency, sequence fidelity, and the impact of various protecting group strategies. Additionally, it provides a template for exploring site-specific modifications such as phosphorylation, acetylation, or labeling, which are essential for advancing peptide chemistry methodologies.
Structural Biology and Conformational Analysis: The peptide is widely utilized in structural biology to investigate secondary structure formation, conformational dynamics, and folding properties of short peptide motifs. Techniques such as circular dichroism spectroscopy, nuclear magnetic resonance, and X-ray crystallography benefit from the use of well-characterized peptides like RW4 to model helix-turn-helix motifs, beta-strand arrangements, or disorder-to-order transitions. These studies enhance the understanding of structure-function relationships and contribute to the design of peptides with tailored biophysical properties.
Cellular Functional Assays: RW4 is applied in cellular assays to probe biological activity, signal transduction, or localization of peptide-responsive pathways. By incorporating this peptide into cell-based systems, researchers can monitor downstream effects, assess cellular uptake, or evaluate the influence of specific sequences on cellular processes. Such applications are instrumental in dissecting the roles of peptide motifs in physiological and experimental contexts, enabling the development of novel research tools for functional genomics and proteomics.
1. Urinary Metabolites Associated with Blood Pressure on a Low-or High-Sodium Die
3. Low bone turnover and low BMD in Down syndrome: effect of intermittent PTH treatment
5. Cationic cell-penetrating peptides are potent furin inhibitors
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