Olefin Cross-Metathesis on Proteins: Investigation of Allylic Chalcogen Effects and Guiding Principles in Metathesis Partner Selection
作者:Yuya A. Lin、Justin M. Chalker、Benjamin G. Davis
DOI:10.1021/ja104994d
日期:2010.12.1
generally enhance the rate of alkene metathesis reactions. Allyl selenides were found to be exceptionally reactiveolefinmetathesissubstrates, enabling a broad range of protein modifications not previously possible. The principles considered in this report are important not only for expanding the repertoire of bioconjugation but also for the application of olefinmetathesis in general synthetic endeavors
Genetic Incorporation of Olefin Cross-Metathesis Reaction Tags for Protein Modification
作者:Bhaskar Bhushan、Yuya A. Lin、Martin Bak、Anuchit Phanumartwiwath、Nan Yang、Matthew K. Bilyard、Tomonari Tanaka、Kieran L. Hudson、Lukas Lercher、Monika Stegmann、Shabaz Mohammed、Benjamin G. Davis
DOI:10.1021/jacs.8b09433
日期:2018.11.7
Olefin cross-metathesis (CM) is a viable reaction for the modification of alkene-containing proteins. Although allyl sulfide or selenide side-chain motifs in proteins can critically enhance the rate of CM reactions, no efficient method for their site-selective genetic incorporation into proteins has been reported to date. Here, through the systematic evaluation of olefin-bearing unnatural amino acids
烯烃交叉复分解 (CM) 是一种用于修饰含烯烃蛋白质的可行反应。尽管蛋白质中的烯丙基硫醚或硒化物侧链基序可以极大地提高 CM 反应的速率,但迄今为止尚未报道将它们的位点选择性遗传掺入蛋白质的有效方法。在这里,通过对含烯烃的非天然氨基酸代谢掺入的系统评估,我们发现了 S-烯丙基同型半胱氨酸 (Ahc) 作为一种可遗传编码的 Met 类似物,它不仅由翻译细胞机器加工,而且是一种特殊的 CM 底物残基。蛋白质。通过这种方式,Ahc 用于在 Met 营养缺陷型大肠杆菌菌株中进行有效的 Met 密码子重新分配。大肠杆菌(B834(DE3))以及人类细胞中蛋白质的代谢标记,并且在几种代表性蛋白质中对CM具有反应性。这扩展了 CM 在工具包中的使用,用于蛋白质的“标记和修改”功能化。
Allyl Sulfides Are Privileged Substrates in Aqueous Cross-Metathesis: Application to Site-Selective Protein Modification
作者:Yuya A. Lin、Justin M. Chalker、Nicola Floyd、Gonçalo J. L. Bernardes、Benjamin G. Davis
DOI:10.1021/ja8026168
日期:2008.7.1
Allyl sulfides undergo efficient cross-metathesis in aqueous media with Hoveyda-Grubbs second generation catalyst 1. The high reactivity of allyl sulfides in cross-metathesis was exploited in the first examples of cross-metathesis on a protein surface. S-Allylcysteine was incorporated chemically into the protein, providing the requisite allyl sulfide handle. Preliminary efforts to genetically incorporate S-allylcysteine into proteins are also reported.
Reversible aqueous metathesis reactions for potential application in dynamic combinatorial chemistry
作者:Luke Hunter、Glenn C. Condie、Margaret M. Harding
DOI:10.1016/j.tetlet.2010.07.105
日期:2010.9
Solutions of heterocycles having an allyl sulfide unit and simple alkenes in 50% t-BuOH/H2O undergo reversible olefin metathesis reactions with the second generation Hoveyda-Grubbs catalyst. The choice of functional groups is limited by competitive chelation of some heterocycles with the catalyst, and other stereoelectronic effects. (C) 2010 Elsevier Ltd. All rights reserved.