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pEGFP-1哺乳启动子检测质粒

pEGFP-1哺乳启动子检测质粒

价格: 980

品牌:钦胜生物

供货周期: 现货

货号:QSP0132

规格:2UG

pEGFP-1哺乳启动子检测质粒

 

基本信息

 

复制子: F1 ori , pUC ori

终止子: SV40 poly(A) signal

质粒分类: 哺乳系列质粒;哺乳荧光质粒;哺乳绿色质粒

质粒大小: 4151bp

质粒标签: C-EGFP

原核抗性: 卡那霉素Kan50μg/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: EGFP-NCGTCGCCGTCCAGCTCGACCAG

3'测序引物: EGFP-F (CCAGCAACGCGGCCTTTTTA)

 

质粒简介

         pEGFP-1编码野生型GFP1-3)的红移型变体,其已经针对更明亮的荧光和哺乳动物细胞中更高的表达进行了优化。(激发最大值= 488nm;发射最大值= 507nmpEGFP-1骨架还提供了用于在大肠杆菌中繁殖的pUC起始点和用于单链DNA生产的f1起源。

        pEGFP-1 encodes a red-shifted variant of wild-type GFP (1–3) which has been optimized for brighter fluorescence and higher expression in mammalian cells. (Excitation maximum = 488 nm; emission maximum = 507 nm.) pEGFP-1 encodes the GFPmut1 variant (4) which contains the double-aminoacid substitution of Phe-64 to Leu and Ser-65 to Thr. The coding sequence of the EGFP gene contains more than 190 silent base changes which correspond to human codon-usage preferences (5). Sequences flanking EGFP have been converted to a Kozak consensus translation initiation site (6) to further increase the translation efficiency in eukaryotic cells. pEGFP-1 is a promoterless EGFP vector which can be used to monitor transcription from different promoters and promoter/enhancer combinations inserted into the MCS located upstream of the EGFP coding sequence. SV40 polyadenylation signals downstream of the EGFP gene direct proper processing of the 3' end of the EGFP mRNA. The vector backbone also contains an SV40 origin for replication in mammalian cells expressing the SV40 T antigen. A neomycin-resistance cassette (Neor) allows stably transfected eukaryotic cells to be selected using G418. The Neor cassette consists of the SV40 early promoter, the neomycin/kanamycin resistance gene of Tn5, and polyadenylation signals from the Herpes simplex virus thymidine kinase (HSV TK) gene. A bacterial promoter upstream of this cassette confers kanamycin resistance in E. coli. The pEGFP-1 backbone also provides a pUC origin of replication for propagation in E. coli and an f1 origin for single-stranded DNA production.

       EGFP can be used as an in vivo reporter of gene expression . Promoters should be cloned into the pEGFP-1 MCS upstream from the EGFP coding sequences. Without the addition of a functional promoter, this vector will not express EGFP. The recombinant EGFP vector can be transfected into mammalian cells using any standard transfection method. If required, stable transformants can be selected using G418 .

 

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;
        ②2μl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

        ④10μl100μl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。

 

 

 





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