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ActiBioPure™,EnzymoPure™,无DNA酶和RNA酶,生物活性 级 ,适用于对基线干扰要求严格的色谱和分析工作流程。
-20°C储存。超低温运输 。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。
末端脱氧核糖核酸转移酶(TdT)是一种非模板依赖型DNA聚合酶,可以催化在寡核苷酸、单链和双链DNA的3'羟基端添加dNTP,其中寡核苷酸需至少含有3个核苷酸。TdT也可以作用于RNA,其性能 严格依赖于受体RNA 3’-末端的三级结构和核苷酸的种类。一般TdT对RNA的作用效率比对DNA低。
| T1492047 | Component | 500U | 2500U | Storage |
| T1492047A | TdT | 25 μL | 125 μL | -20℃ |
| T1492047B | 5× Reaction Buffer | 400 μL | 1 mL×2 | -20℃ |
单位定义
37℃,60 min内催化1 nmol dNTP添加到多聚核苷酸3'羟基末端所需的酶量定义为1个活性单位(U)。
应用范围
寡核苷酸或 DNA 3' 羟基末端标记;DNA 末端加尾 (DNA tailing);合成同一种脱氧核苷酸的寡聚链; 5'-RACE 等。
失活或抑制
70℃加热10 min或加入适量EDTA均可导致TdT失活;
金属离子螯合剂,较高浓度的铵根离子、氯离子、碘离子和磷酸根均对TdT有抑制作用。
注意事项
1、TdT使用时需冰上操作,使用完毕后宜立即置于-20℃保存;
2、5×Reaction Buffer中含有CoCl₂,若其不能与下游应用兼容,需采用过柱离心法或苯酚/氯仿抽提及乙醇沉淀方法纯化反应混合物,除去CoCl₂;
3、为了您的安全和健康,请穿实验服并戴一次性手套操作;
4、本产品仅限科研使用。
Terminal Deoxynucleotidyl Transferase (TdT) is a template-independent DNA polymerase that catalyzes the addition of dNTPs to the 3′-hydroxyl terminus of oligonucleotides, single-stranded DNA, and double-stranded DNA. Oligonucleotide substrates must contain at least 3 nucleotides. TdT can also act on RNA, although its activity is highly dependent on the tertiary structure of the 3′-end of the acceptor RNA and the type of nucleotide. Generally, TdT exhibits lower efficiency toward RNA compared to DNA.
| T1492047 | Component | 500U | 2500U | Storage |
| T1492047A | TdT | 25 μL | 125 μL | -20℃ |
| T1492047B | 5× Reaction Buffer | 400 μL | 1 mL×2 | -20℃ |
Unit Definition
One unit (U) of enzyme activity is defined as the amount of enzyme required to incorporate 1 nmol of dNTP into the 3′-hydroxyl terminus of a polynucleotide in 60 minutes at 37°C.
Applications
1. 3′-end labeling of oligonucleotides or DNA
2. DNA tailing
3. Synthesis of homopolymeric oligonucleotide chains
4. 5′-RACE and other related techniques
Inactivation or Inhibition
TdT can be inactivated by heating at 70°C for 10 minutes or by adding an appropriate amount of EDTA.
Its activity is inhibited by metal ion chelators, as well as high concentrations of ammonium ions, chloride ions, iodide ions, and phosphate ions.
Precautions
1. TdT should be handled on ice during use and promptly stored at -20°C after use.
2. The provided 5× Reaction Buffer contains CoCl₂. If this is incompatible with downstream applications, purify the reaction mixture using spin-column centrifugation or phenol/chloroform extraction followed by ethanol precipitation to remove CoCl₂.
3. Wear a lab coat and disposable gloves for safety.
4. This product is for research use only.
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| 批号(Lot Number) | 证书类型 | 货号 |
|---|---|---|
| 分析证书 | T1492047 |
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查看 Bioactive 级别指南 → 查看 DNase, RNase free 级别指南 → 查看 ActiBioPure™ 级别指南 → 查看 EnzymoPure™ 级别指南 →