Triserine is a short homooligopeptide composed of three serine residues, offering multiple hydroxyl groups for hydrogen bonding. The peptide exhibits high polarity and flexible backbone dynamics. Researchers examine its behavior in phosphorylation-mimic studies and peptide-assembly investigations. Applications include structural modeling, SPPS calibration, and polar-motif exploration.
CAT No: R2384
CAS No:6620-98-0
Synonyms/Alias:Triserine;6620-98-0;SER-SER-SER;H-Ser-Ser-Ser-OH;(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-hydroxypropanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxypropanoic acid;E1I56B264V;Serylserylserin;UNII-E1I56B264V;Seryl-seryl-serine;MFCD00055792;L-Seryl-L-seryl-L-serine;CHEMBL1221952;CHEBI:163447;AKOS027439643;AT17295;(S)-2-((S)-2-((S)-2-Amino-3-hydroxypropanamido)-3-hydroxypropanamido)-3-hydroxypropanoic acid;DA-54102;Q27276750;(2S)-2-[(2S)-2-[(2S)-2-AMINO-3-HYDROXYPROPANAMIDO]-3-HYDROXYPROPANAMIDO]-3-HYDROXYPROPANOIC ACID;(S)-2-((S)-2-((S)-2-Amino-3-hydroxypropanamido)-3-hydroxypropanamido)-3-hydroxypropanoicacid;
Triserine is a tripeptide composed of three consecutive serine residues, making it a valuable model compound within peptide chemistry and biochemical research. As a homotrimer of serine, Triserine exhibits distinct physicochemical properties, including enhanced hydrophilicity and the potential for multiple hydrogen bonding interactions. Its unique sequence provides an accessible system for studying the structural, functional, and reactivity profiles of serine-rich peptide motifs. The compound's relevance extends to investigations of protein phosphorylation, peptide modification, and enzymatic processing, positioning it as a versatile tool for researchers exploring the complexities of serine-mediated biochemical pathways.
Peptide synthesis research: Triserine is frequently utilized as a model substrate in the development and optimization of solid-phase peptide synthesis protocols. Its repetitive serine sequence presents a useful test case for examining coupling efficiency, protecting group strategies, and side-chain modification techniques, particularly those involving hydroxyl-containing amino acids. By incorporating this tripeptide into synthetic workflows, researchers can benchmark reaction conditions and improve methodologies for the assembly of serine-rich or O-glycosylated peptides, which are often challenging due to the reactive nature of serine side chains.
Enzymatic specificity studies: The tripeptide serves as a defined substrate for probing the activity and selectivity of serine-targeting enzymes, such as kinases, phosphatases, and proteases. Triserine's sequence allows for systematic investigation of enzyme-substrate recognition, phosphorylation dynamics, and cleavage patterns in vitro. These studies provide critical insights into the regulation of serine residues within larger protein contexts and facilitate the characterization of enzyme kinetics, substrate preferences, and potential inhibitors in biochemical assays.
Peptide structure-function analysis: Researchers employ Triserine to explore the conformational properties of short, serine-rich peptide segments. Its simple, repeating sequence makes it an ideal candidate for spectroscopic and structural studies, including nuclear magnetic resonance (NMR) and circular dichroism (CD) analyses. Such investigations contribute to a deeper understanding of how serine clustering influences peptide secondary structure, solubility, and intermolecular interactions, which are relevant to both natural protein domains and the design of synthetic biomaterials.
Post-translational modification research: The presence of three adjacent serine residues enables Triserine to act as a substrate or model for studying O-linked glycosylation and phosphorylation. Researchers can utilize it to investigate the mechanisms, efficiency, and site selectivity of post-translational modifications that commonly occur on serine residues within cellular proteins. These studies are instrumental in elucidating the biochemical consequences of serine modifications and in developing analytical methods for detecting and quantifying such changes in complex biological samples.
Analytical method development: The defined composition and hydrophilic character of Triserine make it a useful standard in the calibration and validation of chromatographic and mass spectrometric techniques used for peptide analysis. Its predictable retention behavior and fragmentation patterns provide a reliable reference for optimizing separation conditions, instrument parameters, and detection sensitivity in peptide mapping workflows. Employing this tripeptide as a benchmark enhances the accuracy and reproducibility of analytical platforms designed for peptide and protein characterization.
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