■ 基本信息
別名: | pET20b+ |
啟動子: | T7 |
復制子: | pBR322 |
終止子: | T7 terminator |
質粒分類: | 大腸桿菌載體；PET系列表達質粒 |
質粒大小: | 3716bp |
質粒標簽: | N-pelB, C-His |
原核抗性: | Amp |
克隆菌株: | DH5a |
培養條件: | 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 |
■ 質粒屬性
質粒宿主: | 大腸桿菌 |
質粒用途: | 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: |
|
熒光標記: |
|
■ 質粒簡介
pET-20b質粒是一個大腸桿菌蛋白表達載體，T7啟動子驅動目的基因和6×HIS標簽融合表達，并在pelB信號肽的作用下分泌至細胞周質。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.質粒只保證關鍵序列正確，不保證表達效果。
■ 質粒圖譜
■ 質粒序列
質粒序列請下載：
ZK150pET-20b大腸表達質粒.txt
