pGilda酵母双杂交质粒

pGilda酵母双杂交质粒

基本信息

原核抗性: 氨苄青霉素Amp

筛选标记: HIS3

克隆菌株: 大肠杆菌DH5α

培养条件: 37℃

质粒简介

           pGilda  is a cloning vector used to generate fusions of a bait protein with the 202-residue LexA protein, which acts as a DNA-binding domain in the MATCHMAKER LexA Two-Hybrid System . The hybrid protein is expressed in yeast cells from the tightly regulated GAL1 promoter (PGAL1); transcription is repressed in the presence of glucose and induced in the the absence of glucose and presence of galactose . pGilda carries the HIS3 gene for selection in His– auxotrophic yeast strains and is compatible with MATCHMAKER LexA Libraries. This vector replicates autonomously in both E. coli (using the Col E1 ori) and in S. cerevisiae (using the CEN/ARS ori). Ampr is used for selection in E. coli.

质粒图谱

pGilda酵母双杂交质粒使用说明：

     1、收到质粒干粉后请先5000rpm离心1min，再加入20μl无菌水溶解质粒，室温放置1min；

     2、从-80℃冰箱中取出相应的感受态，置于冰盒上解冻，并做好标记；

     3、取2μl质粒加至100μl感受态中，冰浴30min；

     4、42℃热激90s，再冰浴2min；

     5、加入900μl无抗的LB液体培养基，180rpm震荡培养45min；

     6、6000rpm离心5min，仅留100ul上清混匀菌体沉淀；

     7、混匀后的菌液加至对应抗性的LB平板上，倒入适量玻璃珠，涂匀液体；

     8、将平板正向培养1h，再倒置培养12h~16h；

     9、挑取单克隆菌落至对应抗性的LB液体培养基中，震荡培养12h~16h，根据实验需要提取质粒。

pGilda酵母双杂交质粒注意事项：

      1、如果您收到的是甘油菌种，请先四区划线，挑取单克隆培养。

      2、如果第二天转化平板长的过多，请将质粒按比例稀释后再转化。