1. 重组蛋白
  2. Ubiquitin Related Proteins
  3. Ubiquitin Enzymes
  4. E2 Enzymes
  5. Ubiquitin Conjugating Enzyme E2 B
  6. UBE2B 蛋白, Human (HEK293, His)

UBE2B 蛋白, Human (HEK293, His)

目录号: HY-P71398
产品使用指南

UBE2B 蛋白是一种关键的泛素化作用因子,充当 E2 泛素结合酶,接受 E1 复合物中的泛素并催化与蛋白质的共价附着。UBE2B 与 BRE1(RNF20 和/或 RNF40)E3 酶配合使用,通过催化“Lys-120”(H2BK120ub1)处的组蛋白 H2B 单泛素化,在转录调节中发挥关键作用。这种修饰标记了各种表观遗传过程,对于 H3K4me 和 H3K79me 的形成至关重要。UBE2B 表现出多功能泛素链连接,在体外介导“Lys-11”、“Lys-48”和“Lys-63”连接的多泛素化。它还在 UV 损伤 DNA 的复制后修复中发挥着至关重要的作用,与 RAD18 E3 连接酶形成 UBE2B-RAD18 泛素连接酶复合物,该复合物可单泛素化“Lys-164”上的 DNA 相关 PCNA。UBE2B 的多种功能表明其可能参与神经突的生长。UBE2B 蛋白, Human (HEK293, His) 是重组的 UBE2B 蛋白,由 HEK293 表达,带有 C-6*His 标签。UBE2B 蛋白, Human (HEK293, His) 全长 152 个氨基酸,分子量约为 ~17.0 kDa。

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描述

UBE2B Protein, a key ubiquitination player, functions as an E2 ubiquitin-conjugating enzyme, accepting ubiquitin from the E1 complex and catalyzing covalent attachment to proteins. Teaming with BRE1 (RNF20 and/or RNF40) E3 enzyme, UBE2B plays a pivotal role in transcriptional regulation by catalyzing histone H2B monoubiquitination at 'Lys-120' (H2BK120ub1). This modification tags various epigenetic processes and is essential for H3K4me and H3K79me formation. UBE2B exhibits versatile ubiquitin chain linkages, mediating 'Lys-11', 'Lys-48', and 'Lys-63'-linked polyubiquitination in vitro. It also plays a crucial role in postreplication repair of UV-damaged DNA, forming the UBE2B-RAD18 ubiquitin ligase complex with RAD18 E3 ligase, which mono-ubiquitinates DNA-associated PCNA on 'Lys-164'. The diverse functions of UBE2B suggest potential involvement in neurite outgrowth. UBE2B Protein, Human (HEK293, His) is the recombinant human-derived UBE2B protein, expressed by HEK293, with C-6*His labeled tag. The total length of UBE2B Protein, Human (HEK293, His) is 152 a.a., with molecular weight of ~17.0 kDa.

研究背景

UBE2B 是泛素化途径中的关键参与者,通过接受 E1 复合物中的泛素并催化其与其他蛋白质的共价连接,充当 E2 泛素结合酶。UBE2B 与 E3 酶 BRE1(RNF20 和/或 RNF40)合作,在转录调控中发挥着关键作用,催化组蛋白 H2B 在“Lys-120”(H2BK120ub1)处的单泛素化。这种修饰作为各种表观遗传过程的独特标签,包括转录激活、RNA 聚合酶 II 延伸和端粒沉默,并且对于 H3K4me 和 H3K79me 的形成至关重要。除了其组蛋白修饰功能外,UBE2B 还表现出多功能泛素链连接,在体外介导“Lys-11”、“Lys-48”和“Lys-63”连接的多泛素化。此外,UBE2B 在紫外线损伤 DNA 的复制后修复中发挥着至关重要的作用,并与 E3 连接酶 RAD18 协作形成 UBE2B-RAD18 泛素连接酶复合物,该复合物在“Lys-164”上单泛素化 DNA 相关 PCNA。UBE2B 的多种功能表明它可能参与神经突生长。

种属

Human

表达系统

HEK293

标签

C-6*His

蛋白编号

P63146 (M1-S152)

基因 ID
蛋白结构
N-term
UBE2B (M1-S152)
Accession # P63146
6*His
C-term
同用名
Ubiquitin-Conjugating Enzyme E2 B; RAD6 Homolog B; HR6B; hHR6B; Ubiquitin Carrier Protein B; Ubiquitin-Conjugating Enzyme E2-17 kDa; Ubiquitin-Protein Ligase B; UBE2B; RAD6B
氨基酸序列

MSTPARRRLMRDFKRLQEDPPVGVSGAPSENNIMQWNAVIFGPEGTPFEDGTFKLVIEFSEEYPNKPPTVRFLSKMFHPNVYADGSICLDILQNRWSPTYDVSSILTSIQSLLDEPNPNSPANSQAAQLYQENKREYEKRVSAIVEQSWNDS

分子量

Approximately 17.0 kDa

纯度

Greater than 95% as determined by reducing SDS-PAGE.

内毒素含量

<1 EU/μg, determined by LAL method.

文件资料
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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产品名称:
UBE2B Protein, Human (HEK293, His)
目录号:
HY-P71398
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