■ 基本信息
別名: | pET20b+ |
啟動子: | T7 |
復(fù)制子: | pBR322 |
終止子: | T7 terminator |
質(zhì)粒分類: | 大腸桿菌載體；PET系列表達質(zhì)粒 |
質(zhì)粒大小: | 3716bp |
質(zhì)粒標(biāo)簽: | N-pelB, C-His |
原核抗性: | Amp |
克隆菌株: | DH5a |
培養(yǎng)條件: | 37℃，有氧，LB |
表達宿主: | 大腸桿菌BL21(DE3) |
5'測序引物: | T7:TAATACGACTCACTATAGGG |
3'測序引物: | T7-ter:TGCTAGTTATTGCTCAGCGG |
備注: | 分泌表達 |
■ 質(zhì)粒屬性
質(zhì)粒宿主: | 大腸桿菌 |
質(zhì)粒用途: | 蛋白表達 |
片段類型: | ORF
|
片段物種: | 空載體
|
原核抗性: | Amp |
真核抗性: |
|
熒光標(biāo)記: |
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■ 質(zhì)粒簡介
pET-20b質(zhì)粒是一個大腸桿菌蛋白表達載體，T7啟動子驅(qū)動目的基因和6×HIS標(biāo)簽融合表達，并在pelB信號肽的作用下分泌至細胞周質(zhì)。The pET-20b vector carries an N-terminal pelB signal sequence for potential periplasmic localization, plus optional C-terminal His?Tag? sequence. Unique sites are shown on the circle map. Note that the sequence is numbered by the pBR322 convention, so the T7 expression region is reversed on the circular map. The cloning/expression region of the coding strand transcribed by T7 RNA polymerase is shown below. The f1 origin is oriented so that infection with helper phage will produce virions containing single-stranded DNA that corresponds to the coding strand. Therefore, single-stranded sequencing should be performed using the T7 terminator primer.質(zhì)粒只保證關(guān)鍵序列正確，不保證表達效果。
■ 質(zhì)粒圖譜
■ 質(zhì)粒序列
質(zhì)粒序列請下載：
ZK150pET-20b大腸表達質(zhì)粒.txt
