T4 DNA Ligase

Part Numbers: M1801S

Joins Two DNA Strands with Cohesive or Blunt Ends

  • Use with 5´, 3´ or blunt-ended dsDNA (e.g., inserts and vectors)
  • Qualified for blue/white cloning, providing a higher level of quality control for enzymes used in cloning applications
  • Can catalyze the joining of RNA to either a DNA or RNA strand in a duplex molecule

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T4 DNA Ligase
100u
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本产品为大肠杆菌中表达的克隆重组体。主要催化DNA上相邻的5′-磷酸基与3′羟基之间形成磷酸二酯键。 主要用途是连接带匹配粘端的DNA分子,或使平端的双链DNA分子互相连接或与合成接头相连接。也可以催化DNA与RNA之间以及少数RNA之间的连接,但不能催化单链DNA之间的连接。

活性单位定义:
0.01u的T4 DNA连接酶可以在16℃下反应20分钟,连接95%的1µgλDNA-HindIII的分解物。
注:1u相当于抗核酸外切酶测定中的0.2u或60个粘性末端(New England Biolabs)。
 
储存缓冲液:
10mM Tris-HCl (pH 7.0, 25℃),50mM KCl,1mM DTT,0.1mM EDTA和50%甘油。
 
10×反应缓冲液:
300mM Tris-HCl (pH 7.8, 25℃),100mM MgCl2,100mM DTT,10mM ATP。

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