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).
A macrocyclic sulfate (MCS)‐based approach to monodisperse poly(ethyleneglycols) (M‐PEGs) and their monofunctionalized derivatives has been developed. Macrocyclization of oligo(ethyleneglycols) (OEGs) provides MCS (up to a 62‐membered macrocycle) as versatile precursors for a range of monofunctionalized M‐PEGs. Through iterative nucleophilic ring‐opening reactions of MCS without performing group
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] COMPOSITIONS AND METHODS FOR INDUCING IMMUNE TOLERANCE<br/>[FR] COMPOSITIONS ET PROCÉDÉS D'INDUCTION D'UNE TOLÉRANCE IMMUNITAIRE
申请人:UNIV CHICAGO
公开号:WO2018232176A1
公开(公告)日:2018-12-20
Several embodiments provided in the present disclosure relate to compositions that carry an antigen to which tolerance is desired, the antigen being coupled, bound, or otherwise joined to a targeting moiety, the targeting moiety configured to direct the composition to the liver of a subject. In several embodiments, the antigen in coupled to the targeting moiety by way of a polymeric linker. In several embodiments, the polymeric linker is configured to liberate the antigen in vivo. Methods of using the compositions to reduce and/or prevent unwanted immune responses against an antigen of interest are also provided.
Conjugation of multivalent ligands to gold nanoshells and designing a dual modality imaging probe
作者:Mathieu Bédard、Pramod K. Avti、Tina Lam、Léonie Rouleau、Jean-Claude Tardif、Éric Rhéaume、Frédéric Lesage、Ashok Kakkar
DOI:10.1039/c4tb01811g
日期:——
Hollow gold nanoshells functionalized with branched multivalent ligands provide an excellent platform to develop nanoprobes with dual imaging capabilities.
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