Quality Level
form
liquid
mol wt
170 kDa
UniProt accession no.
storage temp.
−70°C
Gene Information
human ... TOP2A(7153)
General description
拓扑异构酶 Ⅱα由位于人类染色体 17q21.2 上的 TOP2A 基因编码。通过在复制、重组和转录过程中可逆地断裂 DNA 链，对控制 DNA 的拓扑状态至关重要。TOP2A 在细胞周期的 S 期晚期和 G2/M 期表达增加，有丝分裂后表达减少。TOP2A 的多态性引起染色体不稳定和肿瘤发生。TOP2A 在乳腺癌、卵巢癌和前列腺癌等多种癌症类型中引起肿瘤增殖和侵袭性。
拓扑异构酶 Ⅱα（拓扑 iiα）是一种具有保守催化活性的基因产物，它促进 DNA 损伤的进程。α异构体存在于增殖细胞中。
Application
人拓扑异构酶 Ⅱα已用于 DNA 切割试验。
拓扑异构酶 Ⅱα在一项研究中被用于评估人类大脑的衰老过程。 拓扑异构酶 Ⅱα也被用于研究其在 HIV-1 复制中的活性。
Biochem/physiol Actions
用于研究 DNA 结构和拓扑结构。
Physical form
缓冲甘油水溶液，含有三羟甲基氨基甲烷缓冲液 (pH 7.7)。溶液中还存在其他成分，可从技术服务部获得这些成分的批次特定信息。
Preparation Note
在专有真核细胞系中过表达的重组酶。
Other Notes
一个单元将在37℃ 下 30 min内衰减 0.2μg 的动基体 DNA。
Legal Information
TOPO is a registered trademark of Life Technologies
存储类别
12 - Non Combustible Liquids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
法规信息
常规特殊物品
此项目有
J R Spitzner et al.
Nucleic acids research, 16(12), 5533-5556 (1988-06-24)
Topoisomerase II, purified from chicken erythrocytes, was reacted with a large number of different DNA fragments and cleavages were catalogued in the presence and absence of drugs that stabilize the cleavage intermediate. Cleavages were sequenced to derive a consensus for
TOP2A induces malignant character of pancreatic cancer through activating beta-catenin signaling pathway.
Pei YF, et al.
Biochimica et Biophysica Acta (BBA)-Molecular Basis of Disease, 1864(1), 197-207 (2018)
Maryjean Pendleton et al.
Annals of the New York Academy of Sciences, 1310, 98-110 (2014-02-06)
Type II topoisomerases are essential enzymes that modulate DNA under- and overwinding, knotting, and tangling. Beyond their critical physiological functions, these enzymes are the targets for some of the most widely prescribed anticancer drugs (topoisomerase II poisons) in clinical use.
M Vanni et al.
Poultry science, 93(4), 856-863 (2014-04-08)
Escherichia coli are a common inhabitant of the gastrointestinal tract of mammals and birds; nevertheless, they may be associated with a variety of severe and invasive infections. Whereas fluoroquinolones (FQ) have been banned in the United States for use in
Topoisomerase 2 alpha: a real predictor of anthracycline efficacy?
Romero A, et al.
Clinical And Translational Oncology, 14(3), 163-168 (2012)
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