Synthesis and Enzymatic Incorporation of Modified Deoxyuridine Triphosphates
作者:Erkai Liu、Curtis Lam、David Perrin
DOI:10.3390/molecules200813591
日期:——
polymerase efficiently incorporates all five modified dUTPs. In addition, all nucleoside triphosphates were capable of supporting a double-stranded exponential PCR amplification. Modified PCR amplicons were PCR amplified into unmodified DNA and sequenced to verify that genetic information was conserved through incorporation, amplification, and reamplification. Overall these modified dUTPs represent new
为了扩展 DNAzyme 和适体的化学功能,已经合成了几种新的修饰的脱氧尿苷三磷酸。实现这一目标的一个重要前体是 5-氨基甲基 dUTP,其中悬垂的胺可作为进一步合成功能化的手柄。五个官能团与 5-氨基甲基 dUTP 缀合。使用几种市售 DNA 聚合酶对需要 2-5 次连续掺入事件的几个模板进行掺入分析。发现 Vent (exo-) DNA 聚合酶有效地整合了所有五种修饰的 dUTP。此外,所有三磷酸核苷都能够支持双链指数 PCR 扩增。修饰的 PCR 扩增子被 PCR 扩增到未修饰的 DNA 中,并测序以验证遗传信息通过掺入、扩增和再扩增得到保守。总的来说,这些修饰的 dUTP 代表了新的候选底物,用于使用修饰的核苷酸文库进行选择。
Diversity-oriented chemical modification of heparin: Identification of charge-reduced N-acyl heparin derivatives having increased selectivity for heparin-binding proteins
作者:Liusheng Huang、Robert J. Kerns
DOI:10.1016/j.bmc.2005.11.013
日期:2006.4
modification of heparin is shown to afford charge-reduced heparin derivatives that possess increased selectivity for binding heparin-binding proteins. Variable N-desulfonation of heparin was employed to afford heparin fractions possessing varied levels of free amine. These N-desulfonated heparin fractions were selectivelyN-acylated with structurally diverse carboxylic acids using a parallel synthesis
A versatile supramolecular hydrogel of nitrilotriacetic acid (NTA) for binding metal ions and magnetorheological response
作者:Yue Pan、Yuan Gao、Junfeng Shi、Ling Wang、Bing Xu
DOI:10.1039/c1jm10822k
日期:——
Here we report a novel supramolecular hydrogelator, which contains a nitrilotriacetic acid (NTA) motif, to form a magnetorheological hydrogel upon interacting with nickel particles or holmium ions or to afford a hydrogel as an efficient absorber of metal ions.
application of a small magnetic field. We use self-assembly to create hybrid nanofibers, which consist of supramolecular hydrogelators and magnetic nanoparticles, as the matrices of the hydrogel. Localized in the nanofibers at a distance of 1–2 nm, the magnetic nanoparticles occupy a small volume fraction of the hydrogel, significantly enhancing the magnetic dipole interactions between them, which
Facile synthesis of a biocompatible silver nanoparticle derived tripeptide supramolecular hydrogel for antibacterial wound dressings
作者:Turibius Simon、Chung-Shu Wu、Jie-Chuan Liang、Chieh Cheng、Fu-Hsiang Ko
DOI:10.1039/c5nj01981h
日期:——
Through a mineralization process, Nap-FFC peptides produced transparent silver nanoparticle-based hydrogels (AgNPs@Nap-FFC) for antibacterial wound dressing.