计算溶液所需的质量、体积或浓度。
BioReagent,用于蛋白分析 级 提供 ≥95%(WB) 纯度,适用于对基线干扰要求严格的色谱和分析工作流程。
-80℃储存,避免反复冻融。特低温运输 。请查阅批次 COA 获取详细规格。
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
通过K48位连接形成的靶蛋白多聚泛素化,是目前各类链连接方式中研究最透彻的,我们曾一度将其视为这种翻译后修饰的标志性特征。如今已明确,即便不是全部,也有许多泛素多聚链拓扑结构可能在调控细胞进程中发挥着独特且重要的作用。尽管如此,K48位连接仍是细胞通过蛋白水解降解维持内环境稳态的关键途径,因此,对于研究参与降解过程的去泛素化酶 (DUBs)以及蛋白酶体本身而言,该连接方式仍具有极高的研究价值。
本研究中的四聚泛素链,由野生型泛素经E2-25K酶促连接,通过赖氨酸48位形成。其最远端的泛素分子在48位赖氨酸位置发生精氨酸取代,从而限制了链的长度。
应用
去泛素化酶 (DUB)连接特异性研究
产品信息
1、物种:人
2、表达系统:大肠杆菌
3、标签:无
4、纯度:>95% (Western blot)
5、分子量:34,233.4 Da
6、物理状态:液体
7、缓冲液:20 mM Tris-HCl,pH 7.5,0.15 M NaCl,1 mM EDTA
8、数量:25 μg
9、溶解度:>1 mg/mL
10、储存条件:-80℃ 保存。避免反复冻融。
Western blot分析

RP-HPLC图谱

Poly-ubiquitylation of target proteins through linkage at K48, is now the most throughly studied of the various chain linkages, and we once considered the hallmark of this post-translational modification. It is now clear that many, if not all, poly-Ub chain topologies likely play distinct and important roles in regulating cellular processes. Nevertheless, K48 linkage remains a critical pathway for the cells to maintain homeostasis through proteolytic degradation, and as such remains very intriguing for the study of DUBs that play a role in the degradation, as well as the proteasome itself.
These tetra-ubiquitin chains generated from the enzymatic linkage (E2-25K) of wild-type ubiquitin through lysine 48. The most distal ubiquitin contains an arginine substitution for a lysine at position 48, limiting chain length.
Application
Investigation of DUB linkage specificity
Product Information
1. Species: Human
2. Expression System: E. coli
3. Tag: None
4. Purity: > 95% by Western blot analysis
5. Molecular Weight: 34,233.4 Da
6. Physical State: Liquid
7. Buffer: 20 mM Tris-HCl, pH 7.5, 0.15 M NaCl, 1 mM EDTA
8. Quantity: 25 μg
9. Solubility: >1 mg/mL
10. Storage: -80℃. Avoid repeated freeze/thaw cycles.
Western blot analysis

RP-HPLC Profile
