Dynamic Light Scattering Evidence for a Ligand-Induced Motion between the Two Domains of Glucoamylase G1 ofAspergillus niger with Heterobivalent Substrate Analogues
摘要:
Heterobifunctional ligands that bind at the same time to the catalytic domain and to the starch-binding domain of glucoamylase induce a conformational change of the protein, as shown by dynamic light scattering. The ligands consist of acarbose and β-cyclodextrin linked together by oligoethylene glycols of variable length (see the schematic diagram).
Monothiols derived from glycols as agents for stabilizing gold colloids in water: synthesis, self-assembly and use as crystallization templates
摘要:
四甘醇(HO-(C 2 H 4 O) 4 -H)可以通过用硫醇 SH 基团取代一个末端羟基来实现单官能团化。由此产生的分子可以在金(111)表面进行自组装。更重要的是,这种分子可以在单一水相中简单地一步制备受保护的水溶性金胶体。我们尝试利用这种受保护的水溶性胶体作为成核 "种子",在其周围形成碳酸钙结晶。
Densely packed co-adsorbed ultrathin mono molecular layers of short tri(ethylene glycol)-alkanethiolate (for repelling proteins) and maltoside terminated alkanethiolate (for capturing lectin) provided an extremely high signal to noise ratio surface: the repelling molecules, which had two different functions (highly flexible-hydrophilic arm and rigid packing tail group), worked as “nano barriers” in the recognition monolayer.
[EN] MULTIVALENT FUCOSE DERIVATIVES FOR USE AS A DRUG<br/>[FR] DÉRIVÉS DE FUCOSE MULTIVALENTS DESTINÉS À ÊTRE UTILISÉS EN TANT QUE MÉDICAMENT
申请人:UNIV NANTES
公开号:WO2018149945A1
公开(公告)日:2018-08-23
The present invention relates to a compound bearing at least two fucose moieties for its use as a drug in the prevention or treatment of infections caused by Aspergillus spp, said compound having a molecular weight comprised from 0.6 to 340 kDa, in particular from 0.6 to 2 kDa or from 1 to 7 kDa or from 2 to 10 kDa or from 5 to 340 kDa.
N‐Heterocyclic Carbene‐Modified Au–Pd Alloy Nanoparticles and Their Application as Biomimetic and Heterogeneous Catalysts
作者:Patricia Tegeder、Matthias Freitag、Kathryn M. Chepiga、Satoshi Muratsugu、Nadja Möller、Sebastian Lamping、Mizuki Tada、Frank Glorius、Bart Jan Ravoo
DOI:10.1002/chem.201803274
日期:2018.12.12
revealed excellent size retention and stability over years in water. The alloy nanoparticles were applied as biomimetic catalysts for aerobic oxidation of d‐glucose, for which monometallic Au and Pd nanoparticles showed no or negligible activity. The alloy nanoparticles were further applied as titania‐supported heterogeneous catalysts for the mild hydrogenation of nitroarenes and the semihydrogenation
Six series of semisynthetic lipophilic glycopeptideantibiotic derivatives were evaluated for in vitro activity against influenza A and B viruses. The new teicoplanin pseudoaglycon-derived lipoglycopeptides were prepared by coupling one or two side chains to the N-terminus of the glycopeptide core, using various conjugation methods. Three series of derivatives bearing two lipophilic groups were synthesized
Kinetically Controlled Sequential Growth of Surface-Grafted Chiral Supramolecular Copolymers
作者:Hendrik Frisch、Eva-Corinna Fritz、Friedrich Stricker、Lars Schmüser、Daniel Spitzer、Tobias Weidner、Bart Jan Ravoo、Pol Besenius
DOI:10.1002/anie.201601048
日期:2016.6.13
levels: The β‐sheet sequences direct the polymerization away from the surface, the height of the supramolecular copolymer brushes is well‐controlled by the stepwise nature of the alternating copolymer growth, and 2D spatial resolution is realized by using micropatterned initiating monomers. The programmable nature of the resulting architectures renders this concept attractive for the development of customized