Glu amino acid The dominant search intent behind "asp peptide" appears to be understanding the role and properties of aspartic acid within peptide structures, with a particular focus on synthesis, common sequences like RGD, and potential challenges or applicationsHigh-purity RGD (Arg-Gly-Asp) peptidesfor effective integrin binding inhibition in cell adhesion studies, offering reliable performance from APExBIO..
Tier 1 Entities & Phrases:
* asp peptide
* Aspartic acid
* peptide
* RGD (Arg-Gly-Asp) Peptides
* synthesis
* biosynthesis of proteins
Tier 2 Entities & Phrases:
* dipeptide
* tripeptide
* Asp-Asp-Asp-Asp-Asp
* Asp-Ser-Asp
* Asp-Val
* Asp-His
* Asp-based lactam cyclic peptides
* aspartimide formation
* acidic conditions
* drug candidates
* cell adhesion motif
* integrins
* gene expression
* bone morphogenetic protein
Tier 3 Entities & Phrases:
* WebMD, Health Library, ScienceDirect Topics, PubChem, NIH (sources, not content)
* Critical aspects of peptide hormone abuse in exercise and sports (off-topic)
* Custom Peptide Synthesis (commercial, not core topic)
* For research use only.Aspartic acid (symbol Asp or D; [4] the ionic form is known as aspartate),is an α-amino acid that is used in the biosynthesis of proteins. We do not sell to patients. (commercial, not core topic)
* CAS numbers, specific molecular formulas (too granular for general overview)
* IASP peptides, Aspamino acid, Glu amino acid, L asparagine, Cysteine (related but secondary to Asp peptide)
* Squirrel tail structure, FAP-Targeted Radioligand (too specific and niche)
* ACE-Inhibitory Activity (specific application, less central than general properties)
* Fmoc SPPS, Boc, Fmoc-based solid phase peptide synthesis (synthesis methodology, can be mentioned but not primary focus)
* TFA, HF, formic acid, acetic acid (specific reagents for acidity)
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The term "asp peptide" refers to peptides that incorporate the amino acid aspartic acid (Asp or D)Glu-Asp-Asp | C13H19N3O10 | CID 16123341 - PubChem - NIH. Aspartic acid is a fundamental building block in the biosynthesis of proteins and plays a crucial role in the structure and function of various peptides. Understanding the properties of Asp within a peptide chain is essential, especially when considering peptide synthesis, stability, and biological activity. From simple dipeptides like Asp-Val to complex sequences like the RGD (Arg-Gly-Asp) Peptides, aspartic acid's presence influences how these molecules interact with their biological environment.
Aspartic acid is an acidic amino acid, meaning it carries a negative charge at physiological pH due to its side chain carboxyl group.2013年9月3日—In this work, arepetitive Arg-Gly-Asp (rRGD) peptidewas produced as a cell-stimulating agent to provide the PCL scaffold with bioactivity. DNA ... This characteristic is vital for several reasons:
* Charge and Polarity: The negative charge contributes to the overall charge and polarity of a peptide, influencing its solubility, interaction with other molecules (like proteins or cell surfaces), and its behavior in biological systems.
* Biological Roles: Aspartic acid is involved in critical biological processes, including acting as a neurotransmitter, participating in the urea cycle, and serving as a precursor for other amino acids. In peptides, it can be crucial for binding to receptors or enzymes.Synthesis of Asp-based lactam cyclic peptides using an ...
* Peptide Synthesis Challenges: The aspartic acid residue can present unique challenges during peptide synthesisD-β-aspartyl residue exhibiting uncommon high resistance .... A common issue is the formation of aspartimide, a cyclic intermediate that can lead to undesirable side reactions, such as racemization (conversion of L-amino acids to D-amino acids) or the formation of beta-peptides instead of the desired alpha-peptides. This is particularly problematic in solid-phase peptide synthesis (SPPS) methods, necessitating careful control of reaction conditions and the use of protective groups.
While aspartic acid is a component of countless proteins and peptides, some specific sequences or types of Asp peptides have gained significant attention:
* RGD Peptides: The Arg-Gly-Asp (RGD) sequence is a well-known cell adhesion motif.作者：K Neumann·2020·被引用次数：80—The synthesis of this 41 aminoacid-longpeptideremains a challenge owing to its three aspartic residues, all of which are prone to aspartimide ... Peptides containing this sequence, such as the RGD (Arg-Gly-Asp) Peptides, mimic natural cell adhesion proteins and can bind to integrins, a class of cell surface receptors. These peptides have found applications in research related to cell signaling, tissue engineering, and drug delivery, as they can mediate cell attachment and influence cellular behavior.Preventing aspartimide rearrangements during fmoc-based ... Variations like repetitive RGD (rRGD) peptides are also explored for their enhanced bioactivity.
* Simple Asp Peptides: Shorter peptides composed solely or primarily of aspartic acid, such as Asp-Asp-Asp-Asp-Asp (a pentapeptide) or dipeptides like Asp-Asp, Asp-Val, and Asp-His, are often synthesized for research purposes作者：K Neumann·2020·被引用次数：80—The synthesis of this 41 aminoacid-longpeptideremains a challenge owing to its three aspartic residues, all of which are prone to aspartimide .... These simple chains can serve as model systems to study peptide bond stability, enzymatic activity, or to investigate specific molecular interactionsOne of the major consequences of aspartimide formation is the racemization on the affectedAsp/Asn residue in this process.. For instance, the Asp-Val dipeptide can arise as a metabolite, and Asp-His dipeptides are also found in biological systemsGiving the FAP-Targeted Radioligand a “Squirrel Tail”.
* Asp-based Cyclic Peptides: Asp-based lactam cyclic peptides are being investigated as promising drug candidates. Cyclization can impart greater stability and potentially enhanced biological activity to peptides, making them more suitable for therapeutic use.
The chemical nature of aspartic acid makes it prone to certain reactions that can affect peptide integrity. The labile nature of the peptide bond involving Asp, particularly under acidic conditions, is a known factor in peptide degradation. More significantly, as mentioned, the side chain carboxyl group can participate in intramolecular reactions to form an aspartimide ring. This rearrangement can occur during synthesis or storage, leading to a mixture of the desired peptide product and undesired isomers or degradation products. Researchers often employ specific strategies, such as using protected aspartic acid derivatives or optimizing ligation methods, to prevent or minimize aspartimide formation during complex peptide assembly.
Asp peptides are a diverse group of molecules integral to biological processes and scientific research. From their fundamental role in protein biosynthesis to their specific functions in cell adhesion mediated by sequences like RGD, and the challenges they present in chemical synthesis, aspartic acid's influence on peptide chemistry is profoundAsp-Pro - an overview. Ongoing research continues to explore novel Asp peptides and refine synthesis techniques to harness their full potential in medicine and biotechnology.
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