alpine violet cyclic peptide 479 m/z Cyclotides are plant-derived mini proteins - women-s-peptides amino Alpine Violet Cyclic Peptide 479 m/z: Unraveling a Plant-Derived Mini Protein

peptide-therapy-clinic-seattle-wa The alpine violet, specifically *Viola biflora*, is a notable source of cyclotides, a fascinating class of plant-derived mini proteins.1973年12月3日—The p-p chain is the series of nuclear reactions converting four protons to one 4He nucleus and releasing an energy of about 6.6 MeV/nucleon ... These cyclic peptides, characterized by their unique structure and diverse biological activities, are of significant interest in scientific research. The mention of "479 m/z" points to a specific mass-to-charge ratio, likely referring to the detection of a particular cyclotide or fragment during mass spectrometry analysis, a common technique for identifying and characterizing peptides. Understanding these molecules involves delving into their structure, origin, and potential applications.作者：GK Oguis·2017·被引用次数：5—Thealpine violet,. Viola biflora ... Synthesis of largecycliccystine-knotpeptideby orthogonal coupling strategy using unprotectedpeptideprecursors.

The Nature of Cyclotides

Cyclotides are small peptides, typically ranging from 28 to 37 amino acids, distinguished by their cyclic backbone. This cyclization is achieved through a peptide bond that links the N-terminus to the C-terminus of the amino acid chainFor the second edition in. 1992, the editors made the decision to organize the chapters on the basis of the molecular phy- logeny championed by Carl Woese, .... Furthermore, many cyclotides possess a conserved cystine knot motif, formed by three disulfide bonds, which confers remarkable stability作者：A Herrmann·2008·被引用次数：177—To date, cyclotides have been found in plants from the Rubiaceae, Violaceace and Cucurbitaceae families, and are believed to be part of the host defence system.. This structural robustness allows cyclotides to withstand harsh conditions, including extremes of temperature and pH, and enzymatic degradation. This stability is crucial for their biological functions, often related to plant defense mechanisms.作者：E BANCHI—La mia ricerca si è concentrata su due principali aspetti della simbiosi lichenica: la caratterizzazione delle risposte allo stress in fotobionti lichenici ...

Discovery and Occurrence in Alpine Violets

The alpine violet (*Viola biflora*) has emerged as a rich source for the study of cyclotides. Research has identified numerous cyclotides within this plant species, highlighting its importance in the field of natural product chemistry. These peptides are believed to play a role in the plant's defense system, protecting it from herbivores and pathogens作者：YH Huang·2019·被引用次数：57—Thealpine violet, Viola biflora, is a rich source of cyclotides with potent. 804 cytotoxicity. Phytochemistry, 69, 939-952. 805. Huang, Y. H., Colgrave, M. L. .... The isolation and characterization of specific cyclotides, such as through mass spectrometry detecting ions at 479 m/z, contribute to a growing understanding of the molecular diversity within these plants.

Structure and Properties

The defining characteristic of cyclotides is their head-to-tail cyclic structureGoing around in circles, the art of peptide cyclization. Within this cyclic framework, the cystine knot motif provides a rigid scaffold.Analysis of the Diversity of Cyclotides from Viola tricolor by ... This arrangement of amino acids and disulfide bonds results in a compact and stable three-dimensional structure.作者：YH Huang·2019·被引用次数：57—Thealpine violet, Viola biflora, is a rich source of cyclotides with potent. 804 cytotoxicity. Phytochemistry, 69, 939-952. 805. Huang, Y. H., Colgrave, M. L. ... The specific sequence of amino acids around this conserved core can vary significantly, leading to a wide array of cyclotides with potentially different biological activities. The "m/z" value of 479 likely represents the molecular weight of a specific cyclotide or a fragment thereof, allowing researchers to identify and quantify it.

Potential Applications and Research Directions

The inherent stability and diverse bioactivities of cyclotides have sparked interest in their potential applications, particularly in the pharmaceutical and agricultural sectors.1 Ribosomally-synthesised cyclic peptides from plants as drug ... Their potent cytotoxicity, observed in some cyclotides isolated from the alpine violet, suggests possibilities as anticancer agentssequence fragment assembly of cyclotides from a violet .... Additionally, their ability to interact with biological membranes and their resistance to proteolysis make them attractive candidates for drug delivery systems and as scaffolds for peptide engineering.作者：S Yanamadala·2023·被引用次数：2—A total of 86m/ztraces were identified (Table 1) by analysing the LC-MS spectrum of the HPLC fraction. Table 1. Mass-spectrometric ... Ongoing research aims to explore these applications further, leveraging the unique properties of these plant-derived cyclic peptidesThis review provides a comprehensive overview of cyclotides, a class of stable plant-derived macrocyclicpeptidescharacterized by their uniquecyclic....

Conclusion

Cyclic peptides, such as those found in the alpine violet, represent a significant area of natural product research. The identification of specific molecules, indicated by mass spectrometry readings like 479 m/z, contributes to our detailed knowledge of their structure and function. The stability conferred by their cyclic backbone and cystine knot motif makes them promising candidates for various biotechnological and therapeutic applications, underscoring the ongoing importance of studying these naturally occurring mini proteinsUlf Göransson - Uppsala University.