pDsRed2-Mito线粒体定位质粒

pDsRed2-Mito线粒体定位质粒

基本信息

启动子: CMV promoter

复制子: pUC ori,f1 ori

终止子: SV40 poly(A) signal

质粒分类: 哺乳系列质粒；哺乳荧光质粒；哺乳红色质粒

质粒大小: 4715bp

质粒标签: N-DsRed2

原核抗性: 卡那霉素Kan（50μg/ml）

筛选标记: 新霉素Neo/G418

克隆菌株: DH5α等大肠杆菌

培养条件: 37℃，有氧 LB

表达宿主: 293T等哺乳细胞

培养条件: 37℃，5%CO2

诱导方式: 无须诱导，瞬时表达

5'测序引物: CMV-F（CGCAAATGGGCGGTAGGCGTG）

3'测序引物: SV40-polyA-R（GAAATTTGTGATGCTATTGC）

备注: 哺乳细胞线粒体红色荧光定位质粒

质粒简介

       pDsRed2-Mito是一个哺乳细胞线粒体定位质粒，含有密码子优化过的红色荧光蛋白基因DsRed2和人细胞色素c氧化酶（Mito）亚基VIII的线粒体靶向序列。     

       pDsRed2-Mito is a mammalian expression vector that encodes a fusion of Discosoma sp. Red fluorescent protein (DsRed2; 1, 2) and the mitochondrial targeting sequence from subunit VIII of human cytochrome c oxidase (Mito; 3, 4). The Mito sequence is fused to the 5'-end of DsRed2, a human codon-optimized DsRed variant that is engineered for faster maturation and lower nonspecific aggregation (1, 5). The Mito sequence targets the Mito-DsRed2 fusion protein to the host cell’s mitochondria.

       To drive expression of Mito-DsRed2, this vector contains the immmediate early promoter of cytomegalovirus (PCMV IE ). SV40 polyadenylation signals downstream of the DsRed2 gene direct proper processing of the 3'-end of the Mito-DsRed2 mRNA. This vector also contains an SV40 origin for replication in any mammalian cell line that expresses the SV40 T-antigen, a pUC origin of replication for propagation in E. coli, and an f1 origin for single-stranded DNA production. A neomycin resistance cassette—consisting of the SV40 early promoter (PSV40e), the neomycin/kanamycin resistance gene of Tn5 (Neor/Kanr), and polyadenylation signals from the herpes simplex virus thymidine kinase (HSV TK poly A) gene—allow stably transfected eukaryotic cells to be selected using G418 (6). A bacterial promoter (P) upstream of this cassette drives expression of the gene encoding kanamycin resistance in E. coli.

      pDsRed2-Mito is designed for fluorescent labeling of mitochondria. The vector can be introduced into mammalian cells using any standard transfection method. If required, stable transformants can be selected using G418 (6). The Mito-DsRed2 fusion (excitation/emission maxima: 558 nm/583 nm) can be detected by fluorescence microscopy and by flow cytometry. Filter sets optimized for detecting DsRed by microscopy are available from Chroma Technology Corporation and Omega Optical Inc. Please see their websites (www.chroma.com and www.omegafilters.com) and the Living Colors® Vol. II User Manual, provided with this vector, for more information. To detect MitoDsRed2-expressing cells by flow cytometry, use the instrument’s argon-ion laser to excite the fluorophore at 488 nm and the FL-2 channel to detect the fluorophore’s emission at 583 nm.

质粒图谱

扩增流程
         收到产品后，请先根据产品管壁标签来判断产品形式，并在扩增前准确查找该质粒的抗性、感受态和培养温度。
        1、质粒干粉（请务必转化挑单克隆重提后使用）
        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；
        ②取2μl质粒加至100μl 感受态中，冰浴30min后，42℃热激60s，不要搅动，再冰浴2min；
（从第二步开始均要在超净工作台中无菌操作）

        ③加入500μl无抗的LB液体培养基，180rpm震荡培养45min；

        ④取10μl、100μl复苏液，并分别涂布至目标质粒抗性的LB平板上；
（可使用本平台的平板涂布专用玻璃珠进行涂布，可以比传统涂布方法获得更多转化子）

        ⑤将平板正向培养1h，再倒置37度培养16h。如果要求是30度则培养20h；
（如果菌落过多，请将质粒稀释后再转化。如果无菌落，请加入10μl质粒离心全涂转化）

        ⑥挑取单菌落至LB液体培养基中，加入对应抗生素，220rpm震荡培养14h，根据实验需要和质粒提取试剂盒说明书提取质粒。

        2、甘油菌：四区划线后挑单菌落培养，酵母菌需要先液体复苏再四区划线，再挑单菌落液体培养。

        3、穿刺菌：穿刺接种，液体培养后四区划线，再挑单菌落液体培养。

        4、平板：直接挑取单菌落至液体培养基中。
        5、液体质粒：单独提取的液体质粒收到后可直接使用。