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| 规格: | 5mg | 产品价格: | ¥100.0 |
|---|---|---|---|
| 规格: | 50mg | 产品价格: | ¥100.0 |
| 规格: | 100mg | 产品价格: | ¥100.0 |
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文献和实验,一组使用 NaHS 处理,一组则不作处理;然后用荧光马来酰亚胺染料 Alexa Fluor 488 C5 maleimide(下文简称MAL,Invitrogen,A10254)标记半胱氨酸上的硫醇基团,使正常的半胱氨酸通过 -S- 与 MAL 连接,而硫巯基化的半胱氨酸通过二硫键 -S-S- 与 MAL 连接,如下图: 图 1. 文献 Fig. 6G,硫巯基化分析步骤 接下来加入 DTT,硫巯基化蛋白上特有的二硫键就会被解开,导致荧光 MAL 分子脱落,荧光信号减弱。所以,荧光信号发生变化就验证
to the amber stop codon TAG. Proteins were purified with high yield and subsequently labeled with the hydroxylamine derivative of Alexa Fluor� 488 functioning as a fluorescent donor dye. The proteins were then labeled via maleimide coupling chemistry
----------------------- Screening for Targets of Small Molecules. Mouse anti-digoxigenin IgG clone 1.71.256 (Anti-DIG) was from Boehringer Mannheim (Indianapolis, IN), streptavidin was from Pierce, and bovine serum albumin (BSA) was from Sigma (St. Louis, MO). Alexa488
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