蛋白质-碳水化合物相互作用的抑制为治疗无数人类疾病提供了强大的治疗策略。迄今为止,此类方法的应用因碳水化合物配体对其蛋白质受体的固有低亲和力而受挫。由于凝集素通常存在于多聚体组装中,因此为了寻求高亲和力,已经制备了多种多价糖配体。簇糖苷效应,或观察到源自寡糖配体多价的高亲和力,显然代表了克服“弱结合”问题的最佳策略。在这里,我们报告了一系列多价树突糖的合成及其与植物凝集素伴刀豆球蛋白 A 相互作用的生物物理学评价。
蛋白质-碳水化合物相互作用的抑制为治疗无数人类疾病提供了强大的治疗策略。迄今为止,此类方法的应用因碳水化合物配体对其蛋白质受体的固有低亲和力而受挫。由于凝集素通常存在于多聚体组装中,因此为了寻求高亲和力,已经制备了多种多价糖配体。簇糖苷效应,或观察到源自寡糖配体多价的高亲和力,显然代表了克服“弱结合”问题的最佳策略。在这里,我们报告了一系列多价树突糖的合成及其与植物凝集素伴刀豆球蛋白 A 相互作用的生物物理学评价。
report various multi-tier designer dendritic molecules that incorporate an aromaticcore and heterocyclic and peptide units. The 5-(azidomethyl)benzene-1,3-dicarbonyl unit was chosen as the scaffold as this unit allows two identical units and a reactive end to be incorporated, thus generating a dendron suitable for dendrimer synthesis. The design and synthesis of dendrimers with multi-tier architectures
The present invention relates to the preparation of clickable thin film composite (TFC) polyamide membranes, i.e. either azide functionalized, alkyne functionalized or both, that allow a very simple and easy surface modification of the membrane via click chemistry. Further aspects of the invention are such membranes per se, a process for the subsequent modification of the thin film composite polyamide membrane surface using click chemistry to yield membranes having new chemical and physical properties, e.g. antifouling and/or antibacterial properties.
Hexaamide receptor 4 and coumarin phosphate 5 form an ensemble for effective sensing of geranyl pyrophosphate (GPP). Fluorescence resonance energy transfer in the 4 + 5 ensemble diminishes when 5 is replaced by GPP. Receptor 4 binds selectively with GPP over other anions, including fatty acids. The 4-GPP complex in 1: 1 stoichiometry is inferred by NMR and fluorescence titrations. Receptor 4 contains a pseudotetrahedral cleft to accommodate GPP via Multiple hydrogen bonds, and the two aliphatic chains exert additional hydrophobic interactions.
A Novel Phosphate Chemosensor Utilizing Anion-Induced Fluorescence Change
作者:Jen-Hai Liao、Chao-Tsen Chen、Jim-Min Fang
DOI:10.1021/ol0171564
日期:2002.2.1
The neutral receptor NN'-bis3,5-di[(1-pyrenylmethyl)carbamoyl]benzyl} pyridine-2,6-dicarbamide (2) provides a pseudo-tetrahedron cleft and multiple hydrogen bondings to form a 1:1 complex with phosphate ion in a highly selective manner, by comparison with other anions (F-, CI-, Br-, SCN-, AcQ(-), NO3-, ClO4-, and HSO4-). The binding strength can be inferred from the emission intensity ratio of the pyrene monomer (lambda(max) 377 nm) to the excimer (lambda(max) 477 nm). Fluorescence titration, X-ray analysis, and NMR studies support a proposed complexation model.
Peptide dendrimers with designer core for directed self-assembly
作者:Ram P. Verma、Ashutosh Shandilya、V. Haridas
DOI:10.1016/j.tet.2015.09.043
日期:2015.11
A series of designer peptide dendrimers with urea and urea-triazole cores were synthesized. Urea cored dendrimers assembled into fibrillar morphology, while dendrimers with urea-triazole core assembled into vesicular morphology. The core-dependent self-assembly behavior is studied by ultramicroscopy, Xray crystallography and supported by molecular dynamics simulation. (C) 2015 Elsevier Ltd. All rights reserved.