Prepro VIP (111-122), human is a prepro-vasoactive intestinal polypeptide (VIP)–derived peptide, corresponding to residues 111-122. VIP is present in the peripheral and the central nervous systems where it functions as a nonadrenergic, noncholinergic neurotransmitter or neuromodulator.
Prepro VIP (111-122), human is a synthetic peptide fragment corresponding to amino acids 111 through 122 of the human preprovasoactive intestinal peptide precursor. As a bioactive segment derived from the larger prohormone, this peptide is of significant interest in neuroendocrine and peptide signaling research. Its sequence represents a region implicated in the processing and maturation of vasoactive intestinal peptide (VIP), a well-characterized neuropeptide involved in diverse physiological functions. Researchers utilize such defined peptide fragments to dissect the molecular mechanisms underlying neuropeptide biosynthesis, secretion, and receptor interactions, thereby expanding the understanding of peptide-mediated signaling pathways in human biology.
Peptide processing studies: Prepro VIP (111-122), human is frequently employed in investigations of prohormone processing and maturation. By serving as a model substrate or reference standard, it enables the characterization of proteolytic cleavage events that convert prepropeptides into their active forms. This application is particularly valuable for elucidating the enzymatic steps and regulatory factors involved in the biosynthetic pathway of VIP and related neuropeptides, supporting efforts to map the functional domains within precursor proteins.
Receptor interaction analysis: The defined sequence of this peptide fragment allows researchers to probe the specificity and affinity of peptide-receptor interactions. Through binding assays or structural studies, it can be used to identify critical residues involved in receptor recognition or to map the minimal bioactive domains necessary for functional activity. Such investigations contribute to a more nuanced understanding of how neuropeptides engage with their cognate receptors, informing the design of receptor modulators or analogs for research applications.
Antibody generation and validation: Due to its unique sequence, Prepro VIP (111-122), human is a valuable antigen for raising sequence-specific antibodies. These antibodies are instrumental in immunodetection assays, such as Western blotting, immunohistochemistry, or ELISA, where precise recognition of the precursor or its fragments is required. The use of this peptide in antibody development supports the generation of highly selective reagents for tracking prohormone processing or localizing peptide expression in biological samples.
Peptide mapping and mass spectrometry: The well-defined nature of this peptide fragment makes it an ideal standard or reference for peptide mapping techniques. In mass spectrometry-based proteomics, it can be used to calibrate instruments, validate analytical methods, or serve as a positive control in the identification and quantification of endogenous prepropeptide fragments. This facilitates accurate characterization of peptide processing patterns and supports quality control in peptide synthesis workflows.
Functional studies in peptide signaling: Researchers utilize Prepro VIP (111-122), human in functional assays designed to explore the role of specific peptide domains in modulating cellular responses. By introducing the fragment into cell-based systems or in vitro assays, its effects on intracellular signaling pathways, secretion mechanisms, or gene expression can be systematically evaluated. These studies provide mechanistic insights into the contributions of distinct propeptide regions to the regulation of neuropeptide function, advancing the broader understanding of peptide biology in neuroendocrine systems.
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