bpc-157-peptide-research The dominant search intent appears to be understanding the chemical synthesis of duramycin, specifically through the lens of solid-phase peptide synthesis (SPPS). The core entities are "duramycin," "chemical synthesis," and "solid-phase peptide synthesis." High-relevance phrases include "duramycin peptide," "peptide synthesis," and "solid phase peptide synthesis."
Tier 1:
* Duramycin
* Chemical synthesis
* Solid-phase peptide synthesis (SPPS)
* Peptide synthesis
Tier 2:
* Lantibiotics
* Post-translational modifications
* Solid support
* Amino acids
* Fmoc-SPPS
* Chemical biology tool
* Antimicrobial peptides
Tier 3:
* Versatile agent
* Low degree of racemisation
* Click chemistry
* Triazole linker
* Homoserine Lactone Formation
* Glutamic Acid Side Reactions
* Asp-Pro Cleavage
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The chemical synthesis of duramycin, a complex lantibiotic, is a significant area of research, particularly employing solid-phase peptide synthesis (SPPS). Duramycin, an antimicrobial peptide known for its unique structure, presents challenges that make its de novo synthesis a valuable endeavor for both scientific understanding and potential therapeutic applicationsThesynthesisof peptides can be performed using several methodologies: with the two most common beingsolid-phase peptide synthesis(SPPS) and liquid-phase .... SPPS offers a robust methodology for assembling the linear peptide chain of duramycin, which can then be further modified and cyclized to achieve the final, biologically active molecule. This approach allows for greater control over the synthetic process compared to solely relying on natural biosynthesis, opening avenues for creating duramycin analogs and studying its structure-activity relationships.作者：A Ökesli·2011·被引用次数：147—Lantibiotics are ribosomally synthesized antimicrobialpeptidesthat undergo extensive post-translational modifications to attain their active antimicrobial ...
Duramycin is classified as a lantibiotic, a group of ribosomally synthesized and post-translationally modified antimicrobial peptides. These modifications, which include dehydration and cyclization to form thioether bridges (lanthionine rings), are crucial for their biological activity. While natural biosynthesis yields highly potent compounds, chemical synthesis, especially solid-phase peptide synthesis, provides an alternative route to access duramycin and its derivatives. This synthetic approach is vital for producing sufficient quantities for research and development, and for generating modified versions that might exhibit enhanced properties or novel functionalities.The role of chemical synthesis in developing RiPP antibiotics
The complexity of duramycin lies not only in its linear sequence but also in its intricate post-translational modificationsPeptide synthesis: chemical essentials for standard and .... These modifications are challenging to replicate chemo-enzymatically, making total chemical synthesis a more direct, albeit intricate, pathwayThe role of chemical synthesis in developing RiPP antibiotics. Researchers often utilize SPPS to construct the linear peptide backbone, which then serves as a scaffold for subsequent chemical transformations to introduce the characteristic lanthionine residues and ring structuresThesynthesisof peptides can be performed using several methodologies: with the two most common beingsolid-phase peptide synthesis(SPPS) and liquid-phase .... This allows for precise control over the placement and nature of these modifications.Nine Post-translational Modifications during the Biosynthesis ...
Solid-phase peptide synthesis (SPPS) has revolutionized peptide chemistry by enabling the efficient and stepwise assembly of peptide chains on an insoluble solid support. This technique, pioneered by R作者：A Ökesli·2011·被引用次数：148—Lantibiotics are ribosomally synthesized and post-translationally modified antimicrobialpeptidesthat are characterized by the thioether .... Bruce Merrifield, allows for the sequential addition of protected amino acids. After each coupling step, excess reagents and by-products are washed away, simplifying purification and driving the reaction to completionMechanistic Understanding of Lanthipeptide Biosynthetic ....
In the context of duramycin synthesis, SPPS is employed to build the linear peptide precursor. Common SPPS strategies, such as Fmoc (9-fluorenylmethoxycarbonyl) chemistry, are often preferred due to the mild conditions required for deprotection, which are compatible with the sensitive functional groups present in duramycin. The growing peptide chain is anchored to a resin, typically polystyrene or polyethylene glycol-based, allowing for facile separation of the peptide from soluble reagentsSolid Phase Peptide Synthesis Process and Applications 2025.
Key steps in SPPS for duramycin would involve:
1In organicchemistry,peptide synthesisis the production of peptides, compounds where multiple amino acids are linked via amide bonds, also known as .... Loading the first amino acid: The C-terminal amino acid of duramycin is attached to the solid support.
2. Deprotection: The N-terminal protecting group (e.g., Fmoc) of the immobilized amino acid is removed.2021年2月26日—lasso peptide, BI-32169. 17. In typicalsolid-phase peptide synthesis. (SPPS) strategies, only one linkage to a solid-support is provided.
3. Coupling: The next protected amino acid is activated and coupled to the free N-terminus of the growing peptide chain.
4.advances in classification, synthesis, mode of action, and food ... Washing: Excess reagents and by-products are removed by washing the resin....Solid Phase Peptide Synthesis, 2nd ed PierceChemicalCo, Rockford, IL; Merrifield, B (1986)Solid phasesyntheses Science 232, 341–347. DOI: 10.1126/science ...
5Mechanistic Understanding of Lanthipeptide Biosynthetic .... Repeat: Steps 2-4 are repeated until the entire linear sequence of duramycin is assembled.
6.作者：B Mothia·2012·被引用次数：2—Thesynthesisof two sets of different orthogonally protected lanthionine ready for incorporation intosolid phase peptide synthesisto form cyclised peptides ... Cleavage: The completed linear peptide is cleaved from the solid support, and side-chain protecting groups are removed作者：B Mothia·2012·被引用次数：2—Thesynthesisof two sets of different orthogonally protected lanthionine ready for incorporation intosolid phase peptide synthesisto form cyclised peptides ....
The efficiency of SPPS lies in its iterative nature and the ease of purification. However, challenges can arise with longer or more complex sequences, where incomplete coupling or side reactions can reduce yields and purity. For duramycin, specific amino acid residues and the introduction of non-canonical amino acids or modifications during synthesis require careful optimization of coupling and deprotection strategies.
The synthesis of duramycin is not merely about assembling a linear peptideGuide to Solid Phase Peptide Synthesis - AAPPTEC. The post-translational modifications, particularly the formation of thioether rings, are critical for its biological activity and present significant synthetic hurdles. These modifications involve complex cyclization reactions that are difficult to achieve efficiently and selectively in vitro.
Advancements in chemical synthesis have focused on developing strategies to mimic or facilitate these natural modificationsHybrid Lantibiotics: Combining Synthesis and Biosynthesis. This includes:
* Native Chemical Ligation (NCL): While primarily used for larger peptides and proteins, NCL principles can be adapted to join pre-synthesized peptide fragments, potentially simplifying the overall synthesis of complex structures like duramycin.
* Bio-inspired Chemical Synthesis: Researchers are developing new chemical reactions that mimic the enzymatic processes involved in lantibiotic biosynthesis, such as specific cyclization reactions mediated by engineered catalysts or reagents.
* Hybrid Approaches: Combining solid-phase synthesis with solution-phase modifications or enzymatic steps can offer a pragmatic route to overcome specific synthetic challenges作者：A Ökesli·2011·被引用次数：147—Lantibiotics are ribosomally synthesized antimicrobialpeptidesthat undergo extensive post-translational modifications to attain their active antimicrobial .... For instance, SPPS can be used for the linear peptide, followed by solution-phase cyclization and modification1984 Nobel Prize in Chemistry - The Rockefeller University.
The use of duramycin as a chemical biology tool is also an area of interest, where synthetic duramycin can be modified with tags or labels to study its interactions with biological targets, such as phospholipids, for imaging or diagnostic purposes1984 Nobel Prize in Chemistry - The Rockefeller University. This highlights the importance of having reliable synthetic routes to produce functionalized duramycin derivatives.
The chemical synthesis of duramycin, predominantly through solid-phase peptide synthesis, represents a sophisticated endeavor in modern organic chemistry.Peptidesare manufactured usingsolid phaseFMOC or BOCchemistrymethodologies on a PEG-Polystyrene support resin. SPPS provides a powerful platform for constructing the linear peptide backbone, which is a crucial first step towards obtaining the complete, modified duramycin molecule作者：A Ökesli·2011·被引用次数：148—Lantibiotics are ribosomally synthesized and post-translationally modified antimicrobialpeptidesthat are characterized by the thioether .... While challenges remain in replicating the intricate post-translational modifications, ongoing research and advancements in synthetic methodologies continue to expand the possibilities for producing duramycin and its analogsChemical Modification of Oligonucleotides and Peptides .... These synthetic efforts are vital for furthering our understanding of lantibiotics and unlocking their potential as therapeutic agents and research toolsThe role of chemical synthesis in developing RiPP antibiotics.
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