solid-phase-peptide-synthesis-slideshare The solid-phase peptide synthesis (SPPS) of lacticin 3147, a two-component lantibiotic, represents a significant achievement in the chemical synthesis of complex antimicrobial peptides. This method allows for the construction of both constituent peptides, Ltnα and Ltnβ, which are essential for lacticin 3147's dual-acting bacteriocin activity. SPPS offers a versatile platform for generating not only the native peptides but also valuable analogues, enabling detailed studies into their structure-activity relationships and potential therapeutic applications. The development of robust SPPS strategies for lacticin 3147 facilitates the exploration of modified backbones, altered ring structures, and the incorporation of unnatural amino acids, pushing the boundaries of peptide synthesis.
Early research focused on the successful construction of both peptides comprising lacticin 3147 through solid-phase peptide synthesis. This marked a crucial step in enabling researchers to obtain sufficient quantities of these peptides for detailed biological and structural characterization.作者：H Liu·2010·被引用次数：1—Our strategy for the synthesis of the oxygen analogue of lacticin 3147 A2. (45) involves a combination of solid and solutionphase peptide synthesisas shown in ... The ability to perform these syntheses on-resin proved to be a general and effective approach, paving the way for further modifications and analogue development. Subsequent work has explored various SPPS techniques, including those combined with ring-closing metathesis, to efficiently synthesize the olefin-containing lacticin 3147 A2.作者：PJ Knerr·2012·被引用次数：92—The successful construction of lactocin S and both peptides of lacticin 3147 bysolid-phase peptide synthesis(SPPS) highlight the ...
Beyond the native sequence, SPPS has been instrumental in creating analogues of lacticin 3147Solid-Phase Peptide Synthesis of Analogues of the N- .... These modifications often target specific regions, such as the N-terminus A-ring fragment, or involve replacing key amino acids to investigate their impact on activity.Solid-Supported Synthesis and Biological Evaluation of the ... For instance, the synthesis of lacticin 3147 analogues with modifications at position 5, including Dha replacements with glycine or alanine, has been achieved. Furthermore, SPPS techniques have been employed in the synthesis of non-lanthionine-containing carbocyclic analogues of the lacticin 3147 β-peptide, expanding the scope of structural exploration.
Lacticin 3147 is characterized by its unique two-peptide structure, consisting of Ltnα and LtnβSynthesis of the lantibiotic lactocin S using peptide .... These peptides work synergistically to exert their antimicrobial effect, primarily against Gram-positive bacteria, including pathogenic species like *Listeria monocytogenes*. The dual-acting nature means that the peptides sequentially target the bacterial cell wall, ultimately leading to cell death.作者：H Liu·2010·被引用次数：1—Our strategy for the synthesis of the oxygen analogue of lacticin 3147 A2. (45) involves a combination of solid and solutionphase peptide synthesisas shown in ... This complex mode of action makes lacticin 3147 an attractive candidate for antimicrobial research and potential biotechnological applications.The solid phase supported peptide synthesis of analogues ...
Solid-phase peptide synthesis (SPPS) provides a powerful and widely adopted method for the efficient and rapid production of peptides.Mechanistic Dissection of the Enzyme Complexes Involved in ... Its core principle involves the stepwise addition of amino acids to a growing peptide chain anchored to an insoluble solid support.Synthesis Notes This approach simplifies purification, as excess reagents and byproducts can be easily washed away after each coupling step. The development of protocols, such as those based on Fmoc chemistry, has further enhanced the efficiency and reliability of SPPS for synthesizing complex peptides, including those with challenging sequences and post-translational modifications characteristic of lantibiotics like lacticin 3147.
SPPS techniques are not limited to linear peptide synthesis; they also extend to the creation of cyclic peptidesLantibiotic lacticin 3147 A2. For complex structures like lacticin 3147, which contains thioether bridges and potentially other cyclic elements, SPPS combined with cyclization strategies (like ring-closing metathesis or on-resin cyclizations) is essential.A Multibacteriocin Cheese Starter System, Comprising Nisin ... The ability to synthesize analogues with unnatural amino acids or modified backbones using SPPS opens up avenues for improving stability, potency, or delivery characteristics of bacteriocins.
The chemical synthesis of lacticin 3147 and its analogues through solid-phase peptide synthesis is crucial for understanding its fundamental biological functions and exploring its potential applications.Solid-phase peptide synthesis (SPPS) offers a route to create lantibiotic analogs with unnatural amino acids, modified backbones, or altered ring structures ... Research into its biosynthesis, molecular mechanisms, and immunity systems continues, often supported by synthetically produced peptides. The ability to generate lacticin 3147 and related compounds via SPPS could lead to their use in various fields, from food preservation, as part of multi-bacteriocin starter cultures, to therapeutic interventions against resistant bacterial strains. The ongoing refinement of SPPS methodologies promises to make the synthesis of such complex peptides more accessible and efficient, driving further innovation in the field of antimicrobial peptidesSolid‐Supported Synthesis and Biological Evaluation of ....
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