In the world of peptide research, few molecules draw as much fascination as the vasoactive intestinal peptide structure. As someone who spends considerable time researching peptide sequences and their structural properties, I have found that understanding the architecture of these chains is essential for anyone looking into the biochemical foundations of neuropeptides.
The Molecular Architecture of VIP
When we look at the vasoactive intestinal peptide, we are examining a highly specific sequence. VIP is a peptide of 28 amino acid residues that plays a vital role as a neuromodulator. Its primary structure is remarkably consistent across various species, including human, porcine, and rat models.
From a chemical perspective, the vasoactive intestinal peptide (VIP is a linear polypeptide characterized by the molecular formula C147H237N43O43S. It is often cited that VIP contains 28 amino acid residues with a molecular weight of 3326 (or approximately 3323.77 in its common salt form), which makes it a relatively compact yet functionally dense molecule.
The sequence itself—His-Ser-Asp-Ala-Val-Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Val-Lys-Lys-Tyr—defines its biological activity. This 28 amino acid polypeptide belongs to the glucagon/secretin superfami Amino acid sequences of vasoactive intestinal peptide (VIP ly, which explains why it serves as a ligand for class II G protein-coupled receptors.
Structural Variations and Research Fragments
In my experience analyzing peptide doc There are two known receptors for thevasoactive intestinal peptide(VIP) termed VPAC1 and VPAC2. These receptors bind both VIP and pituitary adenylate Read more umentation, it is helpful to look a by RJ Henning·2001·Cited by 349—VIP contains 28 amino acid residues with a molecular weight of 3326(Table 1). The primary structure of VIP is closely related to pituitary adenylate cyclase Read more t how specific fragments behave compared to the full-length molecule. For instance, the carboxy-terminal VIP fragment (such as VIP 6-28 or 10-28) is often utilized in laboratory settings to study receptor binding affinity.
Researchers frequently reference the vasoactive intestinal peptide (22-28) fragment or the Vasoactive Intestinal Peptide (10-28) variant to isolate specific interaction sites. These smaller segments are crucial when examining the structure o Vasoactive intestinal peptide | C147H237N43O43S - PubChem f the neuropeptide, especially when investigating its role as a neurotransmitter or its interaction with VPAC1 and VPAC2 receptors.
Insights into Functional Distribution
Whether we refer to it as vasoactive intestinal polypeptide (VIP or simply VIP, the molecule is widely distributed throughout the human body. Its gene is mapped to human chromosome 6q25.2, and it is synthesized as a larger 170-amino-acid precursor before being cleaved into its active 28-residue form.
As VIP, a 28-amino-acid polypeptide, is secreted by cells throughout the intestinal tract and neural tissues, its stability and structural integrity are paramount. When studying the vasoactive intestinal peptide, it is important to note:
* Classification: Glucagon/s Structure and expression of the gene encoding ecretin superfamily.
* Receptor Affinity: High affinity for VPAC receptors.
* Physical Form: Often provided as a TFA salt for research stability.
* Molecular Complexity: A 28-amino-acid chain requiring precise synthesis to maintain its helical structure.
Personal Perspective on Peptide Research
For those of us interested in the structural nuances of peptides, the Vasoactive Intestinal Peptide represents Structure, genetics, and metabolism Vasoactive intestinal peptide (VIP) is a 28-residue peptide, derived by proteolytic cleavage from a 170–amino-acid Read more a masterclass in biological efficiency. The way the vasoactive intestinal polypeptide interacts with its receptors is dictated entirely by its sequence. If you are delving into the literature, you will find that the vasoactive intestinal peptide (VIP remains a cornerstone of neuroendocrine research.
by EJ Goetzl·1988·Cited by 59—Peptides recognized by rabbit antibodies tovasoactive intestinal peptide(VIP) were extracted from diisopropyl fluorophosphate-treated rat basophilic Read moreUnderstanding the vasoactive intestinal peptide requires a deep dive into its primary sequence. Whether you are analyzing the full chain or a specific truncated version, the precision required in modern peptide science ensures that we continue to uncover the complexities of this fascinating molecule. Always ensure that your research data is verified against standard chemical references, such as those found in PubChem, to ensure the accuracy of your structural analysis.