Peptide Mimics
Peptide Mimics - Related Videos
10:35
Production and Testing of Antimicrobial Peptides and Their Mimics
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2026
This protocol describes a method for producing and evaluating the antimicrobial activity and cytotoxicity of the cationic peptide Mel4 and peptide mimic RK758. By integrating chemical synthesis, recombinant expression, and standardized functional assays, it provides a streamlined workflow for the production and testing of peptides and small-molecule mimics.
02:53
Blood-Brain Barrier Mimic Permeability Assay: An In Vitro Assay to Assess the Permeability of BBB Mimic to Tracer Molecules
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2023
This video describes a permeability assay to evaluate the permeability of in vitro blood-brain barrier using sodium fluorescein molecules.
04:00
Immunoaffinity Based Extraction of Ubiquitinylated Peptides: A Technique to Selectively Extract Ubiquitin Tagged Peptides from Purified Peptide Fractions
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2023
This video describes a method to extract and purify ubiquitinylated peptides containing remnant di-glycine peptides from a complex peptide mixture. The presented method may help in identifying original ubiquitination sites in the protein.
12:27
Measuring Peptide Translocation into Large Unilamellar Vesicles
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Cited by 9 •
2012
This protocol details a method for the quantitative measure of peptide translocation into large unilamellar lipid vesicles. This method also provides information about the rate of membrane translocation and can be used to identify peptides that efficiently and spontaneously cross lipid bilayers.
03:42
Evaluating Virus Spread Inhibition Through microRNA Mimic-Mediated Genome Silencing
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2026
Source: Ruiz, A. J. and Russell, S. J. MicroRNA-based Regulation of Picornavirus Tropism. J. Vis. Exp. (2017)This video demonstrates the use of synthetic microRNA mimics to inhibit viral replication in cultured epithelial-like cells selectively. It highlights how microRNA-directed genome silencing can block virus spread and confirm targeting specificity through downstream infectivity analysis.
FAQs
Designers preserve the spatial arrangement of amino acid side chains or other binding groups that a target recognizes. They can then replace vulnerable peptide bonds or alter the surrounding scaffold without removing these critical recognition features. This strategy aims to retain interaction with a biological target while giving the molecule properties that differ from those of the natural peptide.
Natural peptide bonds can be vulnerable to enzymatic degradation in biological environments. Replacing those bonds can help a mimic resist breakdown, which may extend its activity compared with the corresponding native peptide. The modification must still support the arrangement of groups required for recognition, because improved stability is useful only if relevant biological interactions are retained.
Researchers can tune the scaffold and the placement of recognition groups to influence stability, selectivity, and cellular delivery. These properties affect whether a mimic remains active in a biological environment, interacts preferentially with a desired target, or reaches cells effectively. Structural tuning therefore connects molecular design with the biological outcome being investigated or developed.
A supported design approach begins by identifying the natural peptide features responsible for target recognition. Researchers then preserve the relevant side-chain or binding-group arrangement while replacing susceptible peptide bonds or modifying the scaffold. The resulting structures can be examined for stability, selectivity, cellular delivery, and retention of the biological activity or interaction of interest.
Peptide mimics can reproduce important recognition features of a natural peptide while offering greater resistance to enzymatic degradation. This allows researchers to use modified molecules when examining how proteins interact and which structural features support those interactions. Their tunable structures also make them useful as molecular probes for testing biological recognition in a controlled research context.
In receptor signaling studies, these molecules can help examine how preserved recognition features influence receptor-related biological activity. In enzyme research, they can support investigation of interactions involving enzyme targets while reducing limitations caused by peptide instability. The same design principles also support therapeutic-agent development and molecular probes whose activity may persist longer in biological environments.