■ 基本信息
啟動子: | CMV |
復(fù)制子: | pUC |
終止子: | SV40 poly(A) signal |
質(zhì)粒分類: | 哺乳細(xì)胞，蛋白過表達(dá)載體 |
質(zhì)粒大小: | 5.2kb |
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)，瞬時表達(dá) |
5'測序引物:
| CMV-F：CGCAAATGGGCGGTAGGCGTG
|
3'測序引物: | 根據(jù)序列設(shè)計引物 |
■ 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)粒簡介
pIRESneo3 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 (1–3). 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. To select for cells that express high levels of the gene of interest, the selective pressure for antibiotic resistance was increased by shifting the neomycin phosphotransferase gene downstream to a less optimal position for translation as directed by the IRES sequence (1). By decreasing the level of expression of the antibiotic resistance marker, the selective pressure on the entire expression cassette is increased, resulting in the selection of cells that express the entire transcript, including the gene of interest, at high levels.
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
■ 質(zhì)粒序列
質(zhì)粒序列請下載：
ZK391pIRESneo3哺乳表達(dá)質(zhì)粒.txt
