argipressin, Asp(5)- is a modified nonapeptide featuring an Asp substitution that alters charge distribution and ring conformation. Researchers employ it to examine residue-dependent folding, polarity effects, and binding determinants. The sequence aids exploration of conformational energetics and disulfide-linked topology. Its structure suits mechanistic peptide analysis.
CAT No: R2231
CAS No:78031-79-5
Synonyms/Alias:Argipressin, asp(5)-;5-Asp-argipressin;A-5-Avp;Arginine vasopressin, asp(5)-;Argipressin, aspartic acid(5)-;78031-79-5;Vasopressin, 5-L-aspartic acid-8-L-arginine-;
Argipressin, Asp(5)- is a synthetic peptide analog structurally related to the naturally occurring neurohypophyseal hormone vasopressin, distinguished by the substitution of aspartic acid at position 5. As a member of the peptide hormone family, it exhibits distinctive biochemical properties that make it valuable for a range of research applications. The modification at the fifth residue alters its receptor affinity and biological activity profile, providing a unique tool for dissecting peptide-receptor interactions and signaling pathways. Its relevance extends to studies in endocrinology, neurobiology, and peptide pharmacology, where the ability to manipulate and investigate peptide structure-function relationships is of central importance.
Receptor binding studies: Argipressin, Asp(5)- serves as a specialized probe in receptor binding assays, particularly for evaluating the specificity and affinity of vasopressin and oxytocin receptor subtypes. The aspartic acid substitution at position 5 enables researchers to assess how discrete modifications influence ligand-receptor interactions, offering insights into the structural determinants of receptor selectivity. This approach is instrumental in mapping binding sites and in the rational design of receptor-specific ligands for basic and translational research.
Peptide structure-function analysis: The compound is frequently employed in structure-activity relationship (SAR) studies to elucidate the impact of individual amino acid substitutions on biological activity. By comparing the functional properties of this analog with those of native vasopressin and other derivatives, investigators can dissect the roles of specific residues in receptor activation, signal transduction, and downstream physiological effects. Such analyses contribute to a deeper mechanistic understanding of peptide hormone function and inform the engineering of novel analogs with tailored properties.
Intracellular signaling pathway research: Modified peptides like Argipressin, Asp(5)- are valuable tools for investigating the intricacies of G protein-coupled receptor (GPCR) signaling. By selectively activating or inhibiting vasopressin receptor subtypes, this analog allows researchers to delineate the cascade of intracellular events triggered by ligand binding. Studies using such analogs help clarify the contributions of distinct signaling pathways to physiological processes such as water homeostasis, vascular tone regulation, and neural communication.
Peptide synthesis and analytical method development: The unique sequence of Argipressin, Asp(5)- also makes it a useful standard or reference compound in the development and validation of peptide synthesis protocols and analytical techniques. Its defined structure and known modifications facilitate the optimization of chromatographic separation, mass spectrometric detection, and peptide quantification methods. These applications are essential for advancing peptide chemistry and ensuring the reliability of experimental results in both research and industrial settings.
Pharmacological profiling and ligand screening: In drug discovery and preclinical research, Argipressin, Asp(5)- is utilized to screen and characterize novel compounds that interact with the vasopressin receptor family. Its altered binding profile provides a benchmark for evaluating the efficacy, selectivity, and mechanism of candidate molecules. Such studies are pivotal for identifying new modulators of neurohypophyseal hormone signaling, contributing to the broader field of peptide-based drug design and receptor pharmacology.
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