pET- 43.1a/ pET- 43.1a质粒/ pET- 43.1a Plasmid

Search name

pET-43.1a Information

Promoter: T7/laco promoter

Replicator: ColE1 ori, F1 ori

Terminator: T7 Terminator

Plasmid classification: Escherichia coli vector; PET series expression plasmid.

Plasmid size: 7275bp

Plasmid tag: C-HSV, N-6 x His, C-6 * His, N-Thrombin, N-Nus, N-EK.

Prokaryotic resistance: ampicillin Amp

Cloned strain: Escherichia coli DH5 alpha

Culture conditions: 37 centigrade, aerobic, LB

Expression host: Escherichia coli BL21 (DE3)

Culture conditions: 37 centigrade, aerobic, LB

Inducement: IPTG or lactose and its analogues

5'sequencing primers: T7:TAATACGACTCACTATAGGG

3'sequencing primers: T7-ter:TGCTAGTTATTGCTCAGCGG

pET-43.1a Description

pET-43.1 series of vectors are designed for cloning and high-level expression of peptide sequences fused with the 491 aa Nus•Tag protein. 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 circle 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 ColiDOWN primer. Vector encoded sequence can be completely removed when cloning into the PshA I or Sma I sites (as shown below) by cleaving the Nus•Tag fusion protein with enterokinase or thrombin, respectively.

pET-43.1a Sequence

LOCUS       Exported                7275 bp ds-DNA     circular SYN 06-SEP-2016
DEFINITION  synthetic circular DNA
KEYWORDS    Untitled 5
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 7275)
         
FEATURES             Location/Qualifiers
     source          1..7275
                     /organism="synthetic DNA construct"
                     /mol_type="other DNA"
     terminator      25..72
                     /note="T7 terminator"
                     /note="transcription terminator for bacteriophage T7 RNA
                     polymerase"
     terminator      140..167
                     /note="rrnB T2 terminator"
                     /note="transcription terminator T2 from the E. coli rrnB
                     gene"
     terminator      259..345
                     /gene="Escherichia coli rrnB"
                     /note="rrnB T1 terminator"
                     /note="transcription terminator T1 from the E. coli rrnB
                     gene"
     CDS             complement(511..528)
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /note="6xHis"
                     /translation="HHHHHH"
     CDS             complement(535..567)
                     /codon_start=1
                     /product="HSV (herpes simplex virus) epitope tag"
                     /note="HSV tag"
                     /translation="QPELAPEDPED"
     CDS             complement(680..694)
                     /codon_start=1
                     /product="enterokinase recognition and cleavage site"
                     /note="enterokinase site"
                     /translation="DDDDK"
     CDS             complement(713..730)
                     /codon_start=1
                     /product="thrombin recognition and cleavage site"
                     /note="thrombin site"
                     /translation="LVPRGS"
     CDS             complement(746..790)
                     /codon_start=1
                     /product="affinity and epitope tag derived from pancreatic
                     ribonuclease A"
                     /note="S-Tag"
                     /translation="KETAAAKFERQHMDS"
     CDS             complement(800..817)
                     /codon_start=1
                     /product="6xHis affinity tag"
                     /note="6xHis"
                     /translation="HHHHHH"
     CDS             complement(833..2317)
                     /codon_start=1
                     /gene="nusA"
                     /product="transcription elongation protein (N utilization
                     substance protein A)"
                     /note="NusA"
                     /note="highly soluble in E. coli"
                     /translation="MNKEILAVVEAVSNEKALPREKIFEALESALATATKKKYEQEIDV
                     RVQIDRKSGDFDTFRRWLVVDEVTQPTKEITLEAARYEDESLNLGDYVEDQIESVTFDR
                     ITTQTAKQVIVQKVREAERAMVVDQFREHEGEIITGVVKKVNRDNISLDLGNNAEAVIL
                     REDMLPRENFRPGDRVRGVLYSVRPEARGAQLFVTRSKPEMLIELFRIEVPEIGEEVIE
                     IKAAARDPGSRAKIAVKTNDKRIDPVGACVGMRGARVQAVSTELGGERIDIVLWDDNPA
                     QFVINAMAPADVASIVVDEDKHTMDIAVEAGNLAQAIGRNGQNVRLASQLSGWELNVMT
                     VDDLQAKHQAEAHAAIDTFTKYLDIDEDFATVLVEEGFSTLEELAYVPMKELLEIEGLD
                     EPTVEALRERAKNALATIAQAQEESLGDNKPADDLLNLEGVDRDLAFKLAARGVCTLED
                     LAEQGIDDLADIEGLTDEKAGALIMAARNICWFGDEA"
     RBS             2325..2347
                     /note="efficient ribosome binding site from bacteriophage
                     T7 gene 10 (Olins and Rangwala, 1989)"
     protein_bind    2362..2386
                     /bound_moiety="lac repressor encoded by lacI"
                     /note="lac operator"
                     /note="The lac repressor binds to the lac operator to
                     inhibit transcription in E. coli. This inhibition can be
                     relieved by adding lactose or
                     isopropyl-beta-D-thiogalactopyranoside (IPTG)."
     promoter        complement(2387..2405)
                     /note="T7 promoter"
                     /note="promoter for bacteriophage T7 RNA polymerase"
     promoter        2718..2795
                     /gene="lacI"
                     /note="lacI promoter"
     CDS             2796..3878
                     /codon_start=1
                     /gene="lacI"
                     /product="lac repressor"
                     /note="lacI"
                     /note="The lac repressor binds to the lac operator to
                     inhibit transcription in E. coli. This inhibition can be
                     relieved by adding lactose or
                     isopropyl-beta-D-thiogalactopyranoside (IPTG)."
                     /translation="MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAEL
                  &nbs <