collagen-peptide-powder-recipes The Viola biflora, commonly known as the Yellow Wood Violet or alpine violet, is a fascinating plant that serves as a rich source of cyclic peptides. Among these, the specific cyclic peptide 479The alpine violet, Viola biflora, is a rich source of novel ....175 highlights the plant's significant contribution to the study of these unique biomolecules2025年8月6日—Thesecyclic peptidesare made of 29-31 amino acids with six conserved cysteine residues forming the so called 'cyclic cystine knot' (CCK motif) .... These plant-derived peptides, known as cyclotides, are characterized by their circular structure and remarkable stability, offering a diverse range of potential biological activities.
Cyclotides are a class of small, circular peptides found predominantly in plants of the Violaceae family, with *Viola biflora* being a notable example.The alpine violet, Viola biflora, is a rich source of cyclotides ... These peptides are true gene products, meaning they are synthesized directly from genetic information. Their defining feature is a cyclic structure, often formed by a head-to-tail amide bond, which contributes to their exceptional resistance to degradation.
A key structural characteristic of cyclotides is the presence of six conserved cysteine residuesProbably participates in a plant defense mechanism. Has moderate levels of cytotoxic activity, active against a human lymphoma cell line with an IC50 of >30 .... These residues form a rigid cyclic cystine knot (CCK motif), involving three disulfide bonds. This intricate knotting provides structural integrity and is crucial for the diverse biological activities observed in these peptides2008年1月1日—The alpine violet, Viola biflora,is a rich source of cyclotides with potent cytotoxicity. Herrmann A., Burman R., Mylne J.S., Karlsson G., .... The molecular weight of cyclic peptide 479.Probably participates in a plant defense mechanism. Has moderate levels of cytotoxic activity, active against a human lymphoma cell line with an IC50 of >30 ...175 is indicative of this small, yet complex, peptide structure.Viola biflora (Yellow wood violet) | Publications | UniProtKB
Research has revealed that cyclotides isolated from *Viola biflora* and other *Viola* species exhibit a spectrum of potent biological activities. These include:
* Cytotoxicity: Several cyclotides demonstrate cytotoxic effects, showing activity against various cell lines, including human lymphoma cells. This property makes them candidates for further investigation in cancer researchCyclotide vibi-D - Viola biflora (Yellow wood violet).
* Antimicrobial Properties: *Viola biflora* cyclotides have shown promise as antimicrobial agents, suggesting their potential role in combating bacterial and fungal infections.
* Insecticidal Activity: The insecticidal effects of cyclotides are well-documented, indicating their natural function in plant defense mechanisms against pests.
* Antiviral Activity: Some studies have indicated potential anti-HIV properties of cyclotides, opening avenues for research in antiviral therapies.Primary and 3-D modelled structures of two cyclotides from ...
* Hemolytic Activity: Certain cyclotides also possess hemolytic activity, the ability to lyse red blood cells, which is another area of ongoing research.
The specific cyclic peptide 479.175 likely contributes to one or more of these observed activities, underscoring the pharmacological significance of compounds derived from *Viola biflora*Cyclotide vibi-B - Viola biflora (Yellow wood violet).
While *Viola biflora* is a primary source, other *Viola* species, such as *Viola odorata* and *Viola arvensis*, also produce a variety of cyclotides with distinct structural variations and biological profiles. Studies exploring geographical and seasonal variations in cyclotide expression within different *Viola* species highlight the dynamic nature of these compoundsCyclotide vibi-I - Viola biflora (Yellow wood violet).
The ongoing research into cyclotides from *Viola biflora* and related species continues to uncover novel peptides and elucidate their mechanisms of action. Understanding the structure-activity relationships of compounds like cyclic peptide 479.175 is crucial for harnessing their therapeutic potential. Future research will likely focus on the isolation, characterization, and potential application of these potent plant-derived peptides in medicine and agriculture.2025年8月6日—2,3 This plant is a rich source of small circularpeptidescalled cyclotides. 4 Cyclotides are plant-derived mini-proteins with 28-37 amino ...