Pro-Ile forms a dipeptide with conformational restriction from proline and hydrophobic packing from isoleucine. The sequence provides a model for β-turn initiation and sterically constrained folding. Researchers study solvent effects and backbone geometry. Uses include structural modeling, peptide synthesis research, and conformational analysis.
CAT No: R2662
CAS No:51926-51-3
Synonyms/Alias:H-Pro-Ile-OH;51926-51-3;Prolylisoleucine;Pro-ile;l-prolyl-l-isoleucine;L-Pro-L-Ile;CHEBI:74790;(2S,3S)-3-Methyl-2-((S)-pyrrolidine-2-carboxamido)pentanoic acid;N-L-Prolyl-L-isoleucine;(2S,3S)-3-methyl-2-[[(2S)-pyrrolidine-2-carbonyl]amino]pentanoic acid;DTXSID20874265;Prolyl-isoleucine;l-prolylisoleucine;H-Pro-Ile;MFCD00037868;CHEMBL55967;SCHEMBL8720606;OCYROESYHWUPBP-CIUDSAMLSA-N;DTXCID601012395;AKOS010420273;FP108157;HY-124005;CS-0083849;Q27144901;(2S,3S)-3-methyl-2-{[(2S)-pyrrolidin-2-yl]formamido}pentanoic acid;
Pro-Ile, also known as Prolyl-Isoleucine, is a dipeptide composed of the amino acids proline and isoleucine linked by a peptide bond. This compound is of significant interest in biochemical and life science research due to its unique structural properties and its role in various metabolic pathways. As a small peptide, Pro-Ile demonstrates stability under a range of experimental conditions, making it suitable for use in diverse laboratory settings. Its ability to mimic peptide motifs found in larger proteins also allows researchers to investigate structure-activity relationships and peptide interactions at a fundamental level. The compact size and defined sequence of Pro-Ile enable precise manipulations in synthetic and analytical studies, positioning it as a valuable tool for advancing peptide science and carbohydrate-related research.
Peptide Transport Studies: Pro-Ile serves as an important model substrate in the investigation of peptide transporter systems, particularly those involved in the uptake of di- and tripeptides across biological membranes. Researchers utilize this dipeptide to study the specificity and affinity of peptide transporters such as PEPT1 and PEPT2 in various cell types. By monitoring the transport kinetics of Pro-Ile, scientists can gain insights into the mechanisms governing nutrient absorption, cellular uptake, and the pharmacokinetics of peptide-based therapeutics. Such studies are instrumental in elucidating the roles of peptide carriers in health and disease, as well as in the development of new drug delivery strategies.
Enzyme Substrate Characterization: In enzymology, Pro-Ile is frequently employed as a substrate for investigating the activity and specificity of peptidases and proteases. Its defined sequence allows researchers to assess how enzymes recognize and cleave peptide bonds involving proline and isoleucine residues. The use of Pro-Ile in enzyme assays facilitates the identification of catalytic preferences and the mapping of active sites, contributing to a deeper understanding of enzyme-substrate interactions. These findings are crucial for the rational design of enzyme inhibitors and the development of biocatalysts for industrial and research applications.
Peptide Structure-Function Analysis: The study of Pro-Ile provides valuable information on the relationship between peptide structure and biological function. By incorporating this dipeptide into larger peptide chains or using it as a model compound, scientists can explore how the presence of proline and isoleucine influences peptide conformation, stability, and interaction with target proteins. Such analyses are essential for advancing peptide engineering and for the design of novel biomolecules with desired properties for use in biotechnology, diagnostics, and therapeutic research.
Synthetic Peptide Development: In the field of synthetic chemistry, Pro-Ile is utilized as a building block for the assembly of custom peptides and peptidomimetics. Its incorporation into synthetic sequences enables the creation of peptides with tailored properties, such as enhanced stability, bioavailability, or target specificity. Researchers leverage Pro-Ile to optimize peptide synthesis protocols and to investigate the effects of sequence modifications on biological activity. These efforts support the development of innovative research tools and potential therapeutic candidates.
Nutritional and Metabolic Research: The role of Pro-Ile in dietary protein digestion and metabolism is another focus of scientific inquiry. Studies involving this dipeptide help elucidate the pathways by which dietary proteins are broken down into absorbable units and how these small peptides contribute to overall nutrient utilization. By examining the absorption and metabolic fate of Pro-Ile, researchers can better understand amino acid bioavailability and the regulation of metabolic processes in different physiological contexts. Such research has implications for the development of functional foods and for advancing knowledge in the fields of nutrition and metabolism.
Overall, Prolyl-Isoleucine stands out as a versatile compound in the realm of peptide and carbohydrate research, offering a wide array of applications that span transporter studies, enzymology, structural analysis, synthetic chemistry, and metabolic investigations. Its well-defined structure and compatibility with various experimental systems make it an indispensable resource for scientists seeking to unravel the complexities of peptide function and to drive innovation across multiple scientific disciplines.
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