■ 基本信息

■ 質粒屬性

■ 質粒簡介

pYES2的是一個5.9 kb的載體，設計用來在釀酒酵母（Saccharomyces cerevisiae）中誘導表達重組蛋白。載體的特點在于基因插入載體的構建簡單，以及能夠使用原養型尿嘧啶進行轉化株的篩選。

1. 酵母GAL1啟動子，能夠在釀酒酵母中被半乳糖高水平的誘導蛋白表達目的蛋白，同時能夠被葡萄糖抑制表達；

2.多克隆位點可以使用的很多限制酶切位點，便于基因插入；

3.CYC1終止子能夠有效終止mRNA的轉錄；

4.能夠利用URA3基因篩選帶有ura3基因型的酵母宿主菌株轉化子；

5.氨芐抗性基因能夠方便在大腸桿菌中的進行載體篩選。

pYES2 is 5.9 kb vector respectively, designed for inducible expression of recombinant proteins in Saccharomyces cerevisiae. Features of the vectors allow purification and detection of expressed proteins (see pages 13–20 for more information). The vectors contain the following elements: Yeast GAL1 promoter for high level inducible protein expression in yeast by galactose and repression by glucose (Giniger et al., 1985; West et al., 1984) Multiple cloning site (MCS) with 8 or 9 unique sites (plus two BstX I sites) to facilitate in-frame cloning with the C-terminal peptide C-terminal peptide encoding the V5 epitope and a polyhistidine (6xHis) tag for detection and purification of your recombinant fusion protein 2μorigin for episomal maintenance and high copy replication (pYES2/CT and pYES3/CT) or CEN6/ARSH4 sequence for non-integrative centromeric maintenance and low copy replication (pYC2/CT) URA3 or TRP1 auxotrophic marker for selection of yeast transformants Ampicillin resistance gene for selection in E. coli.

Use the following outline to clone and express your gene of interest in pYES2.

? Consult the multiple cloning site described on page 3 to design a strategy to clone your gene in pYES2.

? Ligate your insert into pYES2 and transform into E. coli. Select transformants on LB plates containing 50 to 100 μg/ml ampicillin.

? Analyze your transformants for the presence of insert by restriction digestion.

? Select a transformant with the correct restriction pattern and use sequencing to confirm that your gene is cloned in the proper orientation.

? Transform your construct into competent INVSc1 cells and select for uracil prototrophy.

? Test for expression of your recombinant gene by Western blot analysis or functional assay.

■ 質粒圖譜

■ 質粒序列

質粒序列請下載：ZK949pYES2釀酒酵母質粒.txt