pTrcHisA载体基本信息
出品公司:别名:质粒类型:表达水平:启动子:克隆方法:载体大小:5' 测序引物及序列:3' 测序引物及序列:载体标签:载体抗性:备注:产品目录号:稳定性:组成型:病毒/非病毒:
Invitrogen
pTrcHisA, pTrcHis A
大肠杆菌蛋白表达载体
高拷贝
Trc
多克隆位点，限制性内切酶
4414 bp
pTrcHis-F: gaggtatatattaatgtatcg
pTrcHis-R:GATTTAATCTGTATCAGG
N-His, N-EK
Ampicillin
Hosts: E.coli NM522, E.coli INValphaF'. Related vectors: pSE420.
V360-20
瞬时表达 Transient
组成型 Constitutive
非病毒
pTrcHisA载体质粒图谱和多克隆位点信息


pTrcHisA载体简介
pTrcHis载体是来由pBR322质粒衍生而来的表达载体,设计用来在大肠杆菌中进行重组蛋白的高效表达和纯化。

载体上的Trc启动子和rrnB抗终止区使得高水平蛋白表达成为可能.Trc启动子由Trp启动子的-35区域和Lac启动子的-10区域共同组成。pTrcHis载体同时包含有一个LacIq基因，该基因编码了Lac启动子的抑制蛋白。LacIq基因的存在使得宿主菌是LacIq+还是LacIq-都可以高效抑制插入基因的转录。

进行蛋白表达时，大肠杆菌需要生长到对数生长期，然后加入1mM IPTG，去除阻遏蛋白，诱导表达。载体上的迷你顺反子结构能够增强插入基因的转录水平，从而高水平表达目的蛋白。DNA插入片段位于载体表达片段下游，在其上游有一个N-端融合表达多肽序列，该序列包含有ATG起始密码子，6xHis标签，T7噬菌体10号基因的翻译增强子，X press抗原表位，肠激酶酶切识别位点。
pTrcHisA载体序列
LOCUS       pTRCHISA    4414 bp     DNA circular    SYN
DEFINITION  pTRCHISA
ACCESSION   
KEYWORDS    
SOURCE      
  ORGANISM  other sequences; artificial sequences; vectors.
COMMENT     This file is created by Vector NTI
            http://www.biofeng.com/
COMMENT     ORIGDB|GenBank
COMMENT     VNTAUTHORNAME|biofeng.com|
FEATURES             Location/Qualifiers
     source          1..4414
                     /organism="pTRCHISA"
                     /mol_type="other DNA"
     misc_feature    235..257
                     /label="M13_pUC_rev_primer"
     misc_feature    264..333
                     /label="rrnB_ATS"
     misc_feature    370..390
                     /label="pTrcHis_fwd_primer"
     misc_feature    383..409
                     /label="minicis"
     misc_feature    445..463
                     /label="Xpress_fwd_primer"
     misc_feature    446..478
                     /label="T7_leader"
     misc_feature    482..505
                     /label="Xpress_EK"
     misc_feature    complement(597..614)
                     /label="pTrcHis_rev_primer"
     misc_feature    complement(597..614)
                     /label="pBAD_rev_primer"
     terminator      647..804
                     /label="rrnB_terminator"
     terminator      770..813
                     /label="rrnB_T1_terminator"
     terminator      945..972
                     /label="rrnB_T2_terminator"
     promoter        1014..1042
                     /label="AmpR_promoter"
     gene            1084..1944
                     /label="Ampicillin"
                     /gene="Ampicillin"
     CDS             1084..1944
                     /label="ORF frame 1"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGY
                     IELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVE
                     YSPVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRL
                     DRWEPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPL
                     LRSALPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIA
                     EIGASLIKHW*"
     rep_origin      2099..2718
                     /label="pBR322_origin"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGY
                     IELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVE
                     YSPVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRL
                     DRWEPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPL
                     LRSALPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIA
                     EIGASLIKHW*"
     misc_feature    3115..3137
                     /label="pGEX_3_primer"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGY
                     IELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVE
                     YSPVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRL
                     DRWEPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPL
                     LRSALPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIA
                     EIGASLIKHW*"
     misc_feature    3284..4375
                     /label="lacI"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGY
                     IELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVE
      &