Controlled orientation of a small laccase on a multi-walled carbon nanotube electrode was achieved via copper-free click chemistry mediated immobilization.
通过无铜点击化学介导的固定化,实现了在多壁碳纳米管电极上对小型漆酶的控制定向。
An injectable PEG-based hydrogel synthesized by strain-promoted alkyne–azide cycloaddition for use as an embolic agent
With PEG as a macromolecular initiator, cyclooctyne and azide functionalized PEGs were conveniently prepared by the ring-opening polymerization of cyclooctyne-bearing epoxy monomer and azide-bearing cyclocarbonate monomer, respectively. Via the strain-promotedalkyne–azidecycloaddition (SPAAC) reaction of cyclooctyne and azide groups, the two PEG polymers formed a hydrogel in a few minutes upon simply
UNNATURAL AMINO ACIDS COMPRISING A CYCLOOCTYNYL OR TRANS-CYCLOOCTENYL ANALOG GROUP AND USES THEREOF
申请人:EMBL
公开号:US20140073764A1
公开(公告)日:2014-03-13
The present invention relates to unnatural amino acids comprising a cyclooctynyl or trans-cyclooctenyl analog group and having formula (I) or an acid or base addition salt thereof. The invention also relates to the use of said unnatural amino acids, kits and processes for preparation of polypeptides that comprise one or more than one cyclooctynyl or trans-cyclooctenyl analog group. These polypeptides can be covalently modified by in vitro or in vivo reaction with compounds comprising an azide, nitrile oxide, nitrone, diazocarbonyl or 1,2,4,5-tetrazine group.
Profiling sirtuin activity using Copper-free click chemistry
作者:Alyson M. Curry、Ian Cohen、Song Zheng、Jessica Wohlfahrt、Dawanna S. White、Dickson Donu、Yana Cen
DOI:10.1016/j.bioorg.2021.105413
日期:2021.12
activity-based chemical probes (ABPs) for the profiling of sirtuin activity in biological samples. Cyclooctyne-containing and azido-containing probes were synthesized to enable the subsequent copper-free “click” conjugation to either a fluorophore or biotin. The two groups of structurally related ABPs demonstrated different labeling efficiency and selectivity: the cyclooctyne-containing probes failed
哺乳动物 sirtuins 是一组翻译后修饰酶,可去除 NAD +中赖氨酸残基的酰基修饰-依赖的方式。尽管最初被提议作为组蛋白去乙酰化酶 (HDAC),但现在已知它们也可以靶向其他细胞酶和蛋白质。Sirtuin 催化的简单酰胺水解具有深远的生物学意义,包括抑制基因表达、促进 DNA 损伤修复以及调节葡萄糖和脂质代谢。人类 sirtuins 一直受到学术界和工业界的广泛关注,将其作为治疗癌症和神经退行性疾病等疾病的潜在治疗靶点。为了更好地了解它们在各种细胞事件中的作用,创新的化学探针备受追捧。目前的研究重点是开发基于活性的化学探针 (ABP),用于分析生物样品中的 sirtuin 活性。合成了含环辛炔和含叠氮基的探针,以实现随后与荧光团或生物素的无铜“点击”结合。两组结构相关的 ABP 表现出不同的标记效率和选择性:含环辛炔的探针未能将重组 sirtuins 标记到任何可感知的水平,而含叠氮基的
[EN] IMPROVED CONJUGATION LINKERS<br/>[FR] LIEURS DE CONJUGAISON AMÉLIORÉS
申请人:PROLYNX LLC
公开号:WO2020206358A1
公开(公告)日:2020-10-08
Provided are β-eliminative linkers suitable for the conjugation of small molecule, peptide, and protein and compounds comprising the linkers.