PKM2 蛋白, Mouse (sf9, His)

PKM2 protein catalyzes the final step of glycolysis, transferring a phosphoryl group from PEP to ADP to generate ATP. In the nucleus, transcriptional activation of PKM2 contributes to cancer progression, promoting cell proliferation and tumorigenesis. PKM2 is also involved in caspase-independent cell death in tumors. PKM2 Protein, Mouse (sf9, His) is the recombinant mouse-derived PKM2 protein, expressed by Sf9 insect cells , with N-His labeled tag. The total length of PKM2 Protein, Mouse (sf9, His) is 530 a.a., with molecular weight of ~59 kDa.

PKM2 蛋白在细胞过程中发挥多方面的作用，通过介导磷酰基从磷酸烯醇丙酮酸 (PEP) 到 ADP 的转移，从而生成 ATP，从而催化糖酵解的最终限速步骤。其高活性四聚体形式和几乎无活性的二聚体形式之间的动态平衡决定了葡萄糖碳是直接用于生物合成过程还是用于糖酵解 ATP 生产，从而有助于糖酵解的控制。这种形式之间的转变对于肿瘤细胞的增殖和存活具有至关重要的意义。在胚胎发生过程中特异性表达的同工型本身表现出较低的丙酮酸激酶活性，并且需要通过 D-果糖 1,6-二磷酸 (FBP) 进行变构激活。除了其细胞质丙酮酸激酶活性外，PKM2 还充当细胞核中的转录调节因子，充当蛋白激酶。在响应各种信号（例如 EGF 受体激活）而易位到细胞核中后，它会同二聚化，转化为蛋白苏氨酸和酪氨酸蛋白激酶。PKM2 还催化 STAT3 和组蛋白 H3 的磷酸化，有助于转录激活。它在癌细胞中的作用包括促进细胞增殖和肿瘤发生，以及调节免疫检查点蛋白的表达。此外，PKM2 作为特定 mRNA 的翻译调节因子，与其丙酮酸激酶活性无关，与内质网相关核糖体结合并促进内质网目的地 mRNA 的翻译。此外，PKM2 在肿瘤细胞中非半胱天冬酶依赖性细胞死亡中发挥作用。PKM2 的多种功能强调了它在协调对代谢、生长和疾病具有影响的关键细胞过程中的核心地位。

The enzyme activity of this recombinant protein is testing in progress, we cannot offer a guarantee yet.

Mouse

Sf9 insect cells

N-His

P52480 (P2-P531)

18746  [NCBI]

Approximately 59 kDa

Greater than 95% as determined by Tris-Bis PAGE.

无菌粉末

Lyophilized from 0.22 μm filtered solution in 20 mM Tris, 500 mM NaCl (pH 7.0). Normally 8% trehalose is added as protectant before lyophilization.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.