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Price Information

Cat No. Plasmid Name Availability Buy one, get one free! (?)
V011027 pET-17b In stock, instant shipping

Two tubes of lyophilized plasmid will be delivered, each tube is about 5µg.

Basic Vector Information

The pET-17b vector is designed for bacterial expression of proteins with an N-terminal T7 tag.

Vector Name:
pET-17b
Antibiotic Resistance:
Ampicillin
Length:
3303 bp
Type:
pET & Duet Vectors (Novagen)
Replication origin:
ori
Source/Author:
Novagen (EMD Millipore)
Copy Number:
High copy number
Growth Strain(s):
DH5a
Growth Temperature:
37℃

pET-17b vector Map

Copy Sequence View Map
pET-17b3303 bp6001200180024003000T7 promoterT7 tag (gene 10 leader)T7 terminatorAmpR promoterAmpRoribomrop

Plasmid Protocol

1. Centrifuge at 5,000×g for 5 min.

2. Carefully open the tube and add 20 μl of sterile water to dissolve the DNA.

3. Close the tube and incubate for 10 minutes at room temperature.

4. Briefly vortex the tube and then do a quick spin to concentrate the liquid at the bottom. Speed is less than 5000×g.

5. Store the plasmid at -20 ℃.

6. The concentration of plasmid re-measurement sometimes differs from the nominal value, which may be due to the position of the lyophilized plasmid in the tube, the efficiency of the re-dissolution, the measurement bias, and adsorption on the wall of the tube, therefore, it is recommended to transform and extract the plasmid before using it

General Plasmid Transform Protocol

1. Take one 100μl of the competent cells and thaw it on ice for 10min, add 2μl of plasmid, then ice bath for 30min, then heat-shock it at 42℃ for 60s, do not stir, and then ice bath for 2min.

2. Add 900μl of LB liquid medium without antibiotics, and incubate at 37℃ for 45min (30℃ for 1-1.5 hours) with 180rpm shaking.

3. Centrifuge at 6000rpm for 5min, leave only 100μl of supernatant to resuspend the bacterial precipitate and spread it onto the target plasmid-resistant LB plate.

4. Invert the plate and incubate at 37℃ for 14h, or at 30℃ for 20h.

5. Pick a single colony into LB liquid medium, add the corresponding antibiotics, incubate at 220rpm for 14h, and extract the plasmid according to the experimental needs and the instructions of the plasmid extraction kit.

References

  • Azari M, Asad S, Mehrnia MR. Heterologous production of porcine derived antimicrobial peptide PR-39 in Escherichia coli using SUMO and intein fusion systems. Protein Expr Purif. 2020;169:105568. doi:10.1016/j.pep.2020.105568

pET-17b vector Sequence

LOCUS       Exported                3303 bp DNA     circular SYN 16-SEP-2025
DEFINITION  synthetic circular DNA.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 3303)
  AUTHORS   11111111
  TITLE     Direct Submission
REFERENCE   2  (bases 1 to 3303)
  AUTHORS   .
  TITLE     Direct Submission
COMMENT     SGRef: number: 1; type: "Journal Article"
FEATURES             Location/Qualifiers
     source          1..3303
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     source          join(457..3303,1..456)
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     promoter        108..126
                     /label=T7 promoter
                     /note="promoter for bacteriophage T7 RNA polymerase"
     CDS             188..220
                     /codon_start=1
                     /product="leader peptide from bacteriophage T7 gene 10"
                     /label=T7 tag (gene 10 leader)
                     /note="promotes efficient translation in E. coli"
                     /translation="MASMTGGQQMG"
     terminator      382..429
                     /label=T7 terminator
                     /note="transcription terminator for bacteriophage T7 RNA 
                     polymerase"
     promoter        560..664
                     /gene="bla"
                     /label=AmpR promoter
     CDS             665..1525
                     /codon_start=1
                     /gene="bla"
                     /product="beta-lactamase"
                     /label=AmpR
                     /note="confers resistance to ampicillin, carbenicillin, and
                     related antibiotics"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPAAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     rep_origin      1696..2284
                     /direction=RIGHT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     misc_feature    2470..2609
                     /label=bom
                     /note="basis of mobility region from pBR322"
     CDS             complement(2711..2902)
                     /codon_start=1
                     /gene="rop"
                     /product="Rop protein, which maintains plasmids at low copy
                     number"
                     /label=rop
                     /translation="MTKQEKTALNMARFIRSQTLTLLEKLNELDADEQADICESLHDHA
                     DELYRSCLARFGDDGENL"