Impact of the ΔPhe configuration on the Boc-Gly-ΔPhe-NHMe conformation: experiment and theory
作者:Aneta Buczek、Dawid Siodłak、Maciej Bujak、Maciej Makowski、Teobald Kupka、Małgorzata A. Broda
DOI:10.1007/s11224-019-01387-w
日期:2019.10
Conformational propensities of N-t-butoxycarbonyl-glycine-(E/Z)-dehydrophenylalanine N′-methylamides (Boc-Gly-(E/Z)-ΔPhe-NHMe) in chloroform were investigated by NMR and IR techniques. The low-temperature crystal structure of the E isomer was determined by single crystal X-ray diffraction and the experimental data were elaborated by theoretical calculations using DFT (B3LYP, M06-2X) and MP2 approaches
Synthesis of Tetrapeptides Containing Dehydroalanine, Dehydrophenylalanine and Oxazole as Building Blocks for Construction of Foldamers and Bioinspired Catalysts
structure and additionally enables the introduction of non-typical side-chain substituents. Thus, such compounds could be buildingblocks for obtaining novel foldamers and/or artificial enzymes (artzymes). In this paper, effective synthetic procedures leading to such buildingblocks—tetrapeptides containing glycyldehydroalanine, glycyldehydrophenylalanine, and glycyloxazole subunits—are described. Peptides
Toward engineering efficient peptidomimetics. Screening conformational landscape of two modified dehydroaminoacids
作者:Aneta Buczek、Maciej Makowski、Michał Jewgiński、Rafał Latajka、Teobald Kupka、Małgorzata A. Broda
DOI:10.1002/bip.22264
日期:2014.1
determined in vacuum and in solution. The theoretical data and experimental IR results were used as an additional information for the NMR-based determination of the detailed solutionconformations of the peptides. The obtained results reveal that N-methylation of C-terminal amide group changes dramatically the conformational properties of studied dehydropeptides. Theoretical conformational analysis reveals that
Synthesis of Hybrid Tripeptide Peptidomimetics Containing Dehydroamino Acid and Aminophosphonic Acid in the Chain and Evaluation of Their Activity toward Cathepsin C
作者:Michał Paweł Jewgiński、Maciej Makowski、Małgorzata Pawełczak、Waldemar Goldeman、Alicja Trojanowska‐Laskowska、Paweł Kafarski、Rafał Latajka
DOI:10.1002/cbdv.202101019
日期:2022.5
Synthesis of a new group of hybrid phosphonodehydropeptides composed of glycyl-(Z)-dehydrophenylalanine and structurally variable aminophosphonates alongside with investigations of their activity towards cathepsinC are presented. Obtained results suggest that the introduction of (Z)-dehydrophenylalanine residue into the short phosphonopeptide chain does induce the ordered conformation. Investigated
介绍了由甘氨酰-(Z)-脱氢苯丙氨酸和结构可变的氨基膦酸盐组成的一组新的杂合磷酸去氢肽的合成,并研究了它们对组织蛋白酶 C 的活性。获得的结果表明,将 (Z)-脱氢苯丙氨酸残基引入短磷酸肽链确实诱导了有序构象。研究的肽似乎作为组织蛋白酶 C 的弱或中度抑制剂。
Influence of solvents on conformation of dehydropeptides
Structural investigations of dehydropeptides containing (Z)-dehydrophenylalanine in solvents characterized by different polarity are discussed. The conformational analysis are based on spectroscopic methods (NMR, CD), molecular modeling techniques and in case of the tripeptide, ab initio methods. The results of temperature experiment indicate, that the only conformation of the investigated hexapeptide 3 is stabilized by intramolecular hydrogen bonds. Depending on the length of the peptide chain, the polarity of solvent influences on arrangement of the side chain of the amino acids or of the main chain of the peptide. (c) 2012 Elsevier B.V. All rights reserved.