NurfürdenpersönlichenfürStudien,Forschung,是一类含有N-羟基琥珀酰亚胺(NHS)。NHS活性酯与伯胺在PH7-9的环境形成酰胺键。-。在水溶液中,NHS活性酯的水解是(与氨基的反应)个竞争反应。马来酰胺比NHS稳定,,马来酰胺会慢慢水解,失去与巯基反应的特异性。因而,-,并且先让NHS发生反应。结构里的环己烷环可以降低马来酰胺的水解速率。修饰之后可以冻干存放一段时间。很多蛋白质都选用该试剂来进行马来酰亚胺修饰。 来制备抗体-酶或者半抗原作载体的蛋白质,经常采用两步合成法。首先,含有氨基的蛋白质与几倍的偶联剂反应,。然后,再与含有巯基的蛋白质反应。在实际操作中要注意的是,怕潮湿,存放时要和干燥剂一起存放。并且使用中从冰箱拿出来时要先在室外放置一段时间平衡温度,以免立刻开启,空气中水分遇冷凝结,结构。NurfürdenpersönlichenfürStudien,Forschung,zukommerziellenZweckenverwendetwerdenINSTRUCTIONS (inimidyl 4-[N-maleimidomethyl]cyclohexane-1-carboxylate), 50 mg Molecular Weight: Spacer Arm: Mass Added: Storage: Upon receipt store ated at 4° C. Product is shipped at ambient temperature. Sulfo- (inimidyl 4-[N-maleimidomethyl]cyclohexane-1-carboxylate), 1 g Sulfo-, 50 mg Sulfo-, No-Weigh™ Format, 8 × 2 mg microtubes Molecular Weight: Spacer Arm: Mass Added: CAS #: 92921-24-9 Storage: Upon receipt store ated at -20° C. Product is shipped at ambient temperature. Introduction and its water-soluble analog Sulfo- are heterobifunctional crosslinkers that contain N-inimide (NHS) ester and maleimide groups that allow covalent conjugation of amine- and sulfhydryl-containing molecules. NHS esters react with primary amines at pH 7-9 to form amide bonds, while maleimides react with sulfhydryl groups at pH - to form stable thioether bonds. In aqueous solutions, NHS ester hydrolytic degradation is peting reaction whose rate increases with pH. The maleimide group is more stable than the NHS-ester group but will slowly hydrolyze and loses its reaction specificity for sulfhydryls at pH values > . For these reasons, conjugations with these crosslinkers are usually performed at pH -, with the NHS-ester (amine-targeted) reacted before or simultaneous with the maleimide (sulfhydryl-targeted) reaction. The cyclohexane ring in the spacer arm of these reagen
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