久久久精品免费视频,天堂a中文在线,h在线观看欧美,人妻交换大香蕉

產品信息

      Transposons are mobile DNA sequences found in the genomes of prokaryotes and eukaryotes. Transposon tagging has long been recognized as a powerful research tool for randomly   distributing primer binding sites, creating gene“knockouts”, and introducing a physical tag or a genetic tag into large target DNAs. One frequently used transposition system is the Tn5 system isolated from gram-negative bacteria. Though a naturally occurring transposition system, the Tn5 system can be readily adapted for routine use in research laboratories for the following reasons:

1) Tn5 transposase is a small, single subunit enzyme that has been cloned and purified to high   specific activity.

2) Tn5 transposase carries out transposition without the need for host cell factors. 

3) Tn5 transposon insertions into target DNA are highly random.

4) Tn5 transposition   proceeds by a simple“cut and paste”process. Although the chemistry is unique, the result is similar   to using a restriction endonuclease, with random sequence specifi city, accompanied by a DNA ligase activity.

5) Tn5   transposase will transpose any DNA sequence contained between its short 9 basepair Mo saic End (ME) Tn5 transposase recognition sequences.

       In 1998 Goryshin and Reznikoff1demonstrated that a fully functional Tn5 transposition system could be reconstituted in vitro. Additionally, the transposition efficiency of this system has been increased more than 1,000-fold compared to wild-type Tn5 by introducing mutations in the   transposase gene and in the 19-bp Tn5 ME transposase recognition sequence.

        Lucigen’s EZ-Tn5 Transposon Tools (kits and reagents) are based on the hyperactive Tn5 transposition system developed by Goryshin and Reznikoff.

優(yōu)點：

                Insert a kanamycin, tetracycline, or DHFR selectable marker into any DNA sequence in vitro

                Skip primer walking - simplify Sanger sequencing of large DNA inserts

                Speed functional analysis without subcloning - create libraries of random mutants from purified DNA

                Minimize insertion bias with the hyperactive Tn5 system, known for highest level of randomness

組成成分：

               EZ-Tn5? Transposase 10 U ：儲存在-20℃

               EZ-Tn5? <R6Kγori/KAN-2> Transposon：儲存在-20℃

               EZ-Tn5? 10X Reaction Buffer：儲存在-20℃

               EZ-Tn5? 10X Stop Solution:儲存在-20℃

               KAN-2 FP-1 Forward Primer:儲存在-20℃

               R6KAN-2 RP-1 Reverse Primer:儲存在-20℃

               pUC19/3.4 Control Target DNA:儲存在-20℃

               Sterile Water:儲存在-20℃

數據：

Figure 1. The process for generating DNA sequencing templates   using an EZ-Tn5 Insertion kit.

 技術參數

產品優(yōu)點- Insert a kanamycin, tetracycline, or DHFR selectable marker into any DNA sequence in vitro

- Skip primer walking - simplify Sanger sequencing of large DNA inserts

- Speed functional analysis without subcloning - create libraries of random mutants from purified DNA

- Minimize insertion bias with the hyperactive Tn5 system, known for highest level of randomness

產品應用- Faster sequencing of large DNA molecules, as compared to primer walking, random subcloning, or generating nested deletions with exonuclease III and mung bean nuclease.

- Making insertion mutants or gene “knockouts” in vitro.

- Introducing a kanamycin resistance selection marker into any DNA.