pEF1a-MCS-Neo vector (V012829)

Price Information

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

Basic Vector Information

pEF1a-MCS-Neo is a mammalian cell expression vector with EF1a promoter and Neo/G418 selection marker.

pEF1a-MCS-Neo vector Vector 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.

References

• Young TR, Yamamoto M, Kikuchi SS, Yoshida AC, Abe T, Inoue K, Johansen JP, Benucci A, Yoshimura Y, Shimogori T. Thalamocortical control of cell-type specificity drives circuits for processing whisker-related information in mouse barrel cortex. Nat Commun. 2023 Sep 28;14(1):6077.

pEF1a-MCS-Neo vector Sequence

LOCUS       40924_16950        4644 bp DNA     circular SYN 16-NOV-2023
DEFINITION  synthetic circular DNA.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 4644)
  AUTHORS   .
  TITLE     Direct Submission
FEATURES             Location/Qualifiers
     source          1..4644
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     promoter        123..1301
                     /label=EF-1-alpha promoter
                     /note="strong constitutive promoter for human elongation
                     factor EF-1-alpha"
     polyA_signal    1485..1606
                     /label=SV40 poly(A) signal
                     /note="SV40 polyadenylation signal"
     rep_origin      complement(1613..2068)
                     /direction=LEFT
                     /label=f1 ori
                     /note="f1 bacteriophage origin of replication; arrow
                     indicates direction of (+) strand synthesis"
     promoter        2095..2199
                     /label=AmpR promoter
     promoter        2201..2558
                     /label=SV40 promoter
                     /note="SV40 enhancer and early promoter"
     CDS             2593..3384
                     /label=NeoR/KanR
                     /note="aminoglycoside phosphotransferase"
     polyA_signal    3619..3666
                     /label=HSV TK poly(A) signal
                     /note="herpes simplex virus thymidine kinase
                     polyadenylation signal (Cole and Stacy, 1985)"
     rep_origin      3995..4583
                     /label=ori
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
                     replication"