peptide acylation oligomers are the major acylation source - peptide-amine peptides

peptide-acne Peptide Acylation: Understanding the Process and Its Implications

Peptide acylation is a crucial chemical modification involving the addition of an acyl group to a peptide molecule.作者：S Trier·2014·被引用次数：47—Acylation of peptide drugs with fatty acid chainshas proven beneficial for prolonging systemic circulation as well as increasing enzymatic stability without ... This process, frequently encountered in peptide chemistry and post-translational modifications, plays a significant role in altering a peptide's properties, including its stability, solubility, and biological activity作者：M Sheikhi·2024·被引用次数：1—Peptide acylation is an important factor that affects formulation stabilityand can occur during storage, in vitro release, and after drug .... The search keyword "peptide acylation" indicates a strong interest in understanding the mechanisms, applications, and consequences of this modification, with a particular focus on selective N-terminal acylation and its impact on formulation stability.US8637647B2 - Method of acylating a peptide or protein

What is Peptide Acylation?

At its core, acylation is the process of introducing an acyl group (R-C=O) into a molecule.作者：S Trier·2014·被引用次数：47—Acylation of peptide drugs with fatty acid chainshas proven beneficial for prolonging systemic circulation as well as increasing enzymatic stability without ... In the context of peptides, this typically involves the reaction of an acylating agent with either the N-terminus or specific amino acid side chains, such as the epsilon-amino group of lysine residues. The resulting modification is known as N-acylation when it occurs at the N-terminus or S-acylation if it involves cysteine's thiol group. This fundamental chemical transformation is essential for creating modified peptides with tailored characteristics.

Types and Mechanisms of Peptide Acylation

Peptide acylation can occur through various mechanisms, often depending on the specific acylating agent and the reactive sites on the peptide.Acylation process for preparation of n-substituted peptide One common scenario is the N-terminal acylation, where an acyl group is attached to the free amino group at the beginning of the peptide chain. This is particularly relevant when discussing the stability of peptides in formulations, as N-terminal acylation can offer protection against enzymatic degradation.

Another significant type is the acylation of amino acid side chains.Sequence‐Dependent Acylation of Peptide Lysine Residues ... Lysine residues, with their primary amine group, are frequent targets for acylationUS8637647B2 - Method of acylating a peptide or protein. This can be achieved through chemical methods or, increasingly, through enzymatic processes utilizing tools like DNAzymes designed to acylate specific lysine residues in a sequence-dependent mannerConformations of Peptides Corresponding to Fatty ....

Applications and Benefits of Peptide Acylation

The deliberate acylation of peptides offers several advantages, particularly in pharmaceutical and biotechnological applications.

* Enhanced Stability: Acylation, especially with fatty acid chains, can significantly prolong the systemic circulation of peptide drugs. This is achieved by increasing their resistance to enzymatic degradation, a common challenge for therapeutic peptides. For instance, acylation of peptide drugs with fatty acid chains has proven beneficial for prolonging systemic circulation and increasing enzymatic stability作者：FBH Rehm·2024·被引用次数：15—Our enzymatic Lysacylationstrategy is compatible with peptidic substrates, minimally leaves an Asn C-terminally isopeptide-linked directly to ....

* Improved Formulation Stability: Peptide acylation is a critical factor influencing formulation stability. Uncontrolled acylation, such as that occurring with lactic acid solutions in PLGA microspheres, can be detrimental. Understanding and controlling these processes is vital for effective drug delivery devices.Peptideacetylation is the process of attaching an acetyl group (-COCH3) to the amino group at the N-terminus of apeptide. This modification reduces the ... Research into effective mechanisms to suppress peptide acylation within such devices is ongoing作者：M Joseph·1995·被引用次数：31—Fatty acid acylationis a posttranslational modification found in membrane proteins that have hydrophobic sequences serving as transmembrane segments as well as ....

* Modulation of Biological Activity: The addition of an acyl group can alter a peptide's interaction with biological targets, potentially enhancing or modifying its therapeutic effectModule 6 – Organic Chemistry & Analysis. For example, acylation can influence a peptide's lipophilicity, affecting its ability to cross cell membranes or bind to specific receptors.

* Bioconjugation and Functionalization: Acylation provides a means to attach functional groups or other molecules to peptides, enabling their use in diagnostics, imaging, or targeted drug delivery systems. Selective N-terminal acylation methods are being developed for the efficient introduction of functional groups onto biomolecules作者：T Yao·2021·被引用次数：9—Here we used in vitro selection to identifyDNAzymes that acylate amines, including lysine side chains of DNA-anchored peptides..

Challenges and Considerations in Peptide Acylation

While beneficial, peptide acylation also presents challenges that require careful consideration:

* Uncontrolled Acylation: In certain formulations, particularly those involving polyesters like poly(lactic acid) (PLA) and poly(lactic-co-glycolic acid) (PLGA), peptides can undergo unintended acylation.作者：MC Martos-Maldonado·2018·被引用次数：81—Here we report the development of this side-reaction into a general method for highlyselective N-terminal acylationof proteins to introduce functional groups. This can lead to loss of therapeutic efficacy and altered release profiles. Studies have shown that the acylation peptide content can be significant under certain conditions, necessitating strategies to prevent it.作者：A Lucke·2002·被引用次数：159—To identify amino acids that are potential binding part- ners for anacylationreaction, sCT was cleaved enzymatically. By incubation with Glu-C we selectively ...

* Reaction Specificity: Achieving selective acylation at a desired site, especially in complex peptides with multiple potential reaction points, can be challenging.Acylation of Glucagon-Like Peptide-2: Interaction with Lipid ... Developing methods for highly selective N-terminal acylation of proteins and peptides is an active area of research作者：T Yao·2021·被引用次数：9—Here we used in vitro selection to identifyDNAzymes that acylate amines, including lysine side chains of DNA-anchored peptides..

* Analytical Challenges: Characterizing and quantifying acylated peptides requires sophisticated analytical techniques to confirm the modification and its location.Effect of inner pH on peptide acylation within PLGA ...

Future Directions

The field of peptide acylation continues to evolve, with ongoing research focusing on developing more efficient and selective acylation methods, understanding the precise impact of different acyl groups on peptide properties, and devising strategies to control or prevent unwanted acylation in therapeutic formulations. The development of novel acylating agents, enzymatic approaches, and advanced analytical tools will further expand the utility of peptide acylation in diverse scientific and medical fields.