Sphistin Synthetic Peptide (12-38, Fitc in N-Terminal-Fluorescently Labeled Peptide) is a truncated fragments of Sphistin Synthetic Peptide that shows potent antimicrobial activity.
CAT No: R1689
Sphistin Synthetic Peptide (12-38, FITC in N-Terminal-Fluorescently Labeled Peptide) is a chemically synthesized peptide fragment derived from the Sphistin sequence, featuring a fluorescein isothiocyanate (FITC) label at its N-terminus. This peptide is designed for advanced biochemical and molecular biology research, where its fluorescent tag enables precise visualization and quantification in a range of experimental systems. The sequence corresponds to residues 12 through 38 of the native Sphistin protein, a region often implicated in functional domains relevant to host defense and membrane interactions. Its synthetic nature and site-specific labeling make it a versatile tool for probing structure-activity relationships, studying peptide-membrane dynamics, and facilitating high-sensitivity detection in complex biological samples.
Fluorescence-based binding assays: The FITC-labeled Sphistin peptide is highly suitable for fluorescence-based binding studies, enabling researchers to monitor peptide interactions with cellular membranes, proteins, or other biomolecules in real time. The covalently attached fluorescent probe allows for direct observation of binding events via fluorescence microscopy, flow cytometry, or plate-based fluorescence assays, providing quantitative and spatial information about peptide localization, affinity, and kinetics. This approach is particularly valuable for elucidating the molecular mechanisms of peptide-mediated recognition processes and for screening potential peptide interactors in vitro.
Cellular uptake and trafficking studies: The N-terminal FITC modification on the Sphistin fragment facilitates detailed investigation of peptide internalization and intracellular trafficking pathways. By tracking fluorescence within live or fixed cells, scientists can assess cellular uptake efficiency, subcellular localization, and the dynamics of endocytic or translocation processes. These studies are essential for understanding the cellular behavior of bioactive peptides, optimizing delivery strategies, and evaluating the impact of sequence modifications on biological function.
Membrane interaction research: As a segment derived from a known membrane-active peptide, the Sphistin (12-38) fragment serves as a model for studying peptide-lipid interactions, membrane disruption mechanisms, and the determinants of membrane selectivity. The fluorescent label enables visualization of peptide association with synthetic lipid vesicles, supported bilayers, or biological membranes. Such experiments are instrumental in dissecting the physicochemical properties that govern peptide insertion, aggregation, and perturbation of membrane integrity, which are central to the development of novel antimicrobial or membrane-targeting agents.
Quantitative peptide tracking and biodistribution: The presence of the FITC fluorophore allows for sensitive quantification of the peptide in complex biological matrices. Researchers can employ fluorescence spectroscopy or imaging to monitor the biodistribution, stability, and clearance of the peptide in cell culture systems, ex vivo tissues, or model organisms. This capability supports pharmacokinetic profiling, stability assessments, and the evaluation of peptide delivery vehicles, contributing to the rational design of peptide-based research tools and delivery systems.
Peptide structure-function analysis: The synthetic Sphistin (12-38) peptide, with its defined sequence and fluorescent tag, is an effective probe for structure-activity relationship studies. By comparing the biological or physicochemical properties of this fragment with other sequence variants or unlabeled analogs, scientists can delineate the contributions of specific residues or structural motifs to activity, binding, or stability. Such analyses are fundamental for advancing peptide engineering efforts, optimizing peptide design, and expanding the understanding of sequence-dependent functional properties in bioactive peptides.
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