■ 基本信息
啟動(dòng)子: | CMV |
復(fù)制子: | pUC |
質(zhì)粒分類: | 哺乳細(xì)胞，蛋白過表達(dá)載體 |
質(zhì)粒大小: | 5.3kb |
原核抗性: | Amp |
真核抗性: | G418 |
克隆菌株: | DH5a |
培養(yǎng)條件: | 37度 |
表達(dá)宿主: | 哺乳細(xì)胞 |
誘導(dǎo)方式: | 無須誘導(dǎo)，瞬時(shí)表達(dá) |
5'測(cè)序引物: | CMV-F：CGCAAATGGGCGGTAGGCGTG |
3'測(cè)序引物: | 根據(jù)序列設(shè)計(jì)引物 |
■ 質(zhì)粒屬性
質(zhì)粒宿主: | 哺乳細(xì)胞 |
質(zhì)粒用途: | 蛋白表達(dá) |
片段類型: | ORF |
片段物種: | 空載體 |
原核抗性: | Amp |
真核抗性: | G418
|
熒光標(biāo)記: |
|
■ 質(zhì)粒簡(jiǎn)介
pIRESneo (originally described as pCIN4 by Rees et al.; 1) contains the internal ribosome entry site (IRES) of the encephalomyocarditis virus (ECMV), which permits the translation of two open reading frames from one messenger RNA (2, 3). After selection with G418, nearly all surviving colonies will stably express the gene of interest, thus decreasing the need to screen large numbers of colonies to find functional clones. The expression cassette of pIRESneo contains the human cytomegalovirus (CMV) major immediate early promoter/enhancer followed by a multiple cloning site (MCS), a synthetic intron known to enhance the stability of the mRNA (4), the ECMV IRES followed by the neomycin phosphotransferase (NPT II) gene, and the polyadenylation signal of the bovine growth hormone. Ribosomes can enter the bicistronic mRNA either at the 5' end to translate the gene of interest or at the ECMV IRES to translate the antibiotic resistance marker.
質(zhì)粒只保證關(guān)鍵序列正確，不保證表達(dá)效果。
■ 質(zhì)粒圖譜
