1. 重组蛋白
  2. Enzymes & Regulators
  3. Transferases (EC 2) Serine/Threonine Kinase Proteins
  4. Cyclin-Dependent Kinases (CDKs)
  5. CDK12-CCNK Heterodimer 蛋白, Human (Sf9)

CDK12-CCNK Heterodimer 蛋白, Human (Sf9)

目录号: HY-P701360
产品使用指南

CDK12 蛋白是一种细胞周期蛋白依赖性激酶,可严重磷酸化 POLR2A 的 C 末端结构域,从而调节转录延伸。它选择性地靶向 CTD 重复中“Ser-7”处磷酸化的“Ser-5”,也可以靶向“Ser-2”。CDK12-CCNK Heterodimer 蛋白, Human (Sf9) 是重组的蛋白二聚体复合物,包含 CDK12-CCNK 异二聚体蛋白,由 Sf9 insect cells 表达,不带标签。CDK12-CCNK Heterodimer 蛋白, Human (Sf9) 。

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描述

The CDK12 protein is a cyclin-dependent kinase that critically phosphorylates the C-terminal domain of POLR2A, thereby regulating transcription elongation. It selectively targets "Ser-5" phosphorylated at "Ser-7" in the CTD repeat and can also target "Ser-2". CDK12-CCNK Heterodimer Protein, Human (Sf9) is a recombinant protein dimer complex containing human-derived CDK12-CCNK Heterodimer protein, expressed by Sf9 insect cells , with tag free.

研究背景

CDK12-CCNK 异二聚体蛋白作为细胞周期蛋白依赖性激酶发挥作用,通过磷酸化 RNA 聚合酶 II (POLR2A) 大亚基的 C 末端结构域 (CTD),在转录延伸中发挥至关重要的作用。该激酶是基因表达的关键调节因子,特别是参与 DNA 修复过程和基因组稳定性的维持。其磷酸化活性是选择性的,优先选择 CTD 重复序列中已在“Ser-7”处磷酸化的“Ser-5”,但它也可以靶向“Ser-2”。CDK12-CCNK 对于 RNA 剪接至关重要,可能通过 SRSF1/SF2 的磷酸化实现。此外,它还参与 MAP 激酶活性的调节,表明它参与影响对雌激素抑制剂的反应。

种属

Human

表达系统

Sf9 insect cells

标签

Tag Free

蛋白编号

Q9NYV4-1 (Q696-S1082)&O75909-1 (M1-S300)

基因 ID

51755&8812

同用名
CDK12; CCNK; Cyclin-dependent kinase 12; Cdc2-related kinase; arginine/serine-rich; CrkRS; Cell division cycle 2-related protein kinase 7; CDC2-related protein kinase 7; Cell division protein kinase 12; hCDK12; Cyclin-K
纯度

Greater than 90% 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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CDK12-CCNK Heterodimer Protein, Human (Sf9)
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HY-P701360
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