pBiFC-VN173 vector (V012099)

COA reports Sequencing Results MSDS Download GenBank File(.gb)

Price Information

Cat No.	Plasmid Name	Availability	Add to cart
V012099	pBiFC-VN173	In stock, 1 week for quality controls	Buy one, get one free!

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

Basic Vector Information

Objective: To construct pBIFC-VN173-CXCR4 and pBIFC-VC155-NT21MP eukaryotic expression plasmids and to investigate the interaction of chemokine receptor 4 (CXCR4) and viral macrophage inflammatory protein-II(vMIP-II) N terminal 21 peptides (NT21MP) in living cells. Methods: DNA fragment encoding NT21MP was chemically synthesized and inserted into BiFC eukaryotic expression vector pBIFC-VC155. The full length of CXCR4 DNA fragment was amplified by RT-PCR from SKBR (3) cells and inserted into BiFC eukaryotic expression plasmid pBIFC-VN173. Two recombinant vectors were identified by restriction enzyme digestion and DNA sequencing. The recombinant vectors were cotransfected into Africa green monkey kidney fibroblast COS-7 cells by using Lipofectamine 2000. The interaction of NT21MP and CXCR4 was detected by bimolecular fluorescence complementation (BiFC) assay. Results: The restriction enzyme digestion and DNA sequences and open read frames of two vectors were consistent with experiment design. The BiFC plasmids were successfully cotransfected into the target cells and expressed. The strong BiFC signals were detected in pBIFC-VN173-CXCR4 and pBIFC-VC155-NT21MP cotransfected cells and the fluorescence signal was located in the cytoplasm. Conclusion: The eukaryotic expression plasmids for BiFC assay are successfully constructed. The interaction of NT21MP and CXCR4 in living cells can be detected by using this technology.

Vector Name:: pBiFC-VN173

Antibiotic Resistance:: Ampicillin

Length:: 5216 bp

Type:: Bimolecular fluorescent complementation vectors (B

Replication origin:: ori

Selection Marker:: VN173

Promoter:: CMV

Fusion Tag:: Flag

pBiFC-VN173 vector Map

Copy Sequence View Map

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.

pBiFC-VN173 vector Sequence

LOCUS       40924_6472        5216 bp DNA     circular SYN 13-JAN-2022
DEFINITION  synthetic circular DNA.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 5216)
  TITLE     Direct Submission
REFERENCE   2  (bases 1 to 5216)
  AUTHORS   .
  TITLE     Direct Submission
COMMENT     SGRef: number: 1; type: "Journal Article"
FEATURES             Location/Qualifiers
     source          1..5216
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     primer_bind     141..157
                     /label=M13 fwd
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     enhancer        318..697
                     /label=CMV enhancer
                     /note="human cytomegalovirus immediate early enhancer"
     promoter        698..901
                     /label=CMV promoter
                     /note="human cytomegalovirus (CMV) immediate early
                     promoter"
     CDS             935..958
                     /codon_start=1
                     /label=FLAG
                     /note="FLAG(R) epitope tag, followed by an enterokinase
                     cleavage site"
                     /translation="DYKDDDDK"
     CDS             1028..1546
                     /codon_start=1
                     /label=VN173
                     /note="N-terminal fragment of mVenus for use in bimolecular
                     fluorescence complementation (BiFC) (Kodama and Hu, 2010)"
                     /translation="MVSKGEELFTGVVPILVELDGDVNGHKFSVSGEGEGDATYGKLTL
                     KLICTTGKLPVPWPTLVTTLGYGLQCFARYPDHMKQHDFFKSAMPEGYVQERTIFFKDD
                     GNYKTRAEVKFEGDTLVNRIELKGIDFKEDGNILGHKLEYNYNSHNVYITADKQKNGIK
                     ANFKIRHNIE"
     polyA_signal    1557..2179
                     /label=hGH poly(A) signal
                     /note="human growth hormone polyadenylation signal"
     promoter        2208..2537
                     /label=SV40 promoter
                     /note="SV40 enhancer and early promoter"
     promoter        complement(2576..2594)
                     /label=T7 promoter
                     /note="promoter for bacteriophage T7 RNA polymerase"
     primer_bind     complement(2608..2624)
                     /label=M13 rev
                     /note="common sequencing primer, one of multiple similar 
                     variants"
     protein_bind    complement(2632..2648)
                     /label=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(2656..2686)
                     /label=lac promoter
                     /note="promoter for the E. coli lac operon"
     protein_bind    complement(2701..2722)
                     /label=CAP binding site
                     /note="CAP binding activates transcription in the presence
                     of cAMP."
     rep_origin      complement(3010..3598)
                     /direction=LEFT
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"
     CDS             complement(3772..4629)
                     /codon_start=1
                     /label=AmpR
                     /note="beta-lactamase"
                     /translation="MSIQHFRVALIPFFAAFCLPVFAHPETLVKVKDAEDQLGARVGYI
                     ELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRIDAGQEQLGRRIHYSQNDLVEYS
                     PVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTAFLHNMGDHVTRLDRW
                     EPELNEAIPNDERDTTMPVAMATTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSA
                     LPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTGSQATMDERNRQIAEIGAS
                     LIKHW"
     promoter        complement(4630..4734)
                     /label=AmpR promoter
     rep_origin      4761..5216
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow
                     indicates direction of (+) strand synthesis"