LentiCRISPR v2-Blast vector (Cat. No.: V016982)
Note: The LentiCRISPR v2-Blast plasmid is a lentiviral vector designed for CRISPR/Cas9-mediated gene knockout in mammalian cells. It expresses the Cas9 nuclease and a customizable single-guide RNA (sgRNA) from different promoters. A key feature is the blasticidin resistance gene, which replaces the original puromycin marker, allowing for selection of transduced cells using blasticidin. In bacteria, the plasmid is selected with ampicillin. Its all-in-one design facilitates efficient delivery and stable expression of CRISPR components for gene editing applications.
- Name:
- LentiCRISPR v2-Blast
- Antibiotic Resistance:
- Ampicillin
- Length:
- 14612 bp
- Type:
- Gene knockout
- Replication origin:
- ori
- Host:
- Mammalian cells, Lentivirus
- Selection Marker:
- Blast
- Promoter:
- SV40
- Growth Strain(s):
- Stbl3
- Growth Temperature:
- 37℃
Resources
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
- Carretero-Ortega J, Chhangawala Z, Hunt S, Narvaez C, Menéndez-González J, Gay CM, Zygmunt T, Li X, Torres-Vázquez J. GIPC proteins negatively modulate Plexind1 signaling during vascular development. Elife. 2019 May 3;8:e30454. doi: 10.7554/eLife.30454. PMID: 31050647; PMCID: PMC6499541.
LentiCRISPR v2-Blast vector (Cat. No.: V016982) Sequence
LOCUS LentiCRISPR-v2-B 14612 bp DNA circular SYN 30-DEC-2025
DEFINITION Exported.
ACCESSION V016982
VERSION .
KEYWORDS .
SOURCE synthetic DNA construct
ORGANISM synthetic DNA construct
REFERENCE 1 (bases 1 to 14612)
TITLE Direct Submission
REFERENCE 2 (bases 1 to 14612)
AUTHORS .
TITLE Direct Submission
COMMENT SGRef: number: 1; type: "Journal Article"
FEATURES Location/Qualifiers
source 1..14612
/mol_type="other DNA"
/organism="synthetic DNA construct"
enhancer 238..617
/label=CMV enhancer
/note="human cytomegalovirus immediate early enhancer"
promoter 618..820
/label=CMV promoter
/note="human cytomegalovirus (CMV) immediate early
promoter"
LTR 835..1015
/label=5' LTR (truncated)
/note="truncated 5' long terminal repeat (LTR) from HIV-1"
misc_feature 1062..1187
/label=HIV-1 Psi
/note="packaging signal of human immunodeficiency virus
type 1"
misc_feature 1680..1913
/label=RRE
/note="The Rev response element (RRE) of HIV-1 allows for
Rev-dependent mRNA export from the nucleus to the
cytoplasm."
CDS 2098..2142
/label=gp41 peptide
/note="antigenic peptide corresponding to amino acids 655
to 669 of the HIV envelope protein gp41 (Lutje Hulsik et
al., 2013)"
CDS 2291..2332
/label=Protein Tat
/note="Protein Tat from Human immunodeficiency virus type 1
group M subtype B (isolate WMJ22). Accession#: P12509"
misc_feature 2440..2557
/label=cPPT/CTS
/note="central polypurine tract and central termination
sequence of HIV-1"
promoter 2608..2848
/label=U6 promoter
/note="RNA polymerase III promoter for human U6 snRNA"
misc_RNA 4738..4813
/label=gRNA scaffold
/note="guide RNA scaffold for the Streptococcus pyogenes
CRISPR/Cas9 system"
promoter 4875..5086
/label=EF-1-alpha core promoter
/note="core promoter for human elongation factor
EF-1-alpha"
CDS 5111..9214
/label=Cas9
/note="Cas9 (Csn1) endonuclease from the Streptococcus
pyogenes Type II CRISPR/Cas system"
CDS 9263..9286
/label=FLAG
/note="FLAG(R) epitope tag, followed by an enterokinase
cleavage site"
CDS 9296..9352
/label=P2A
/note="2A peptide from porcine teschovirus-1 polyprotein"
CDS 9353..9748
/label=BSD
/note="blasticidin S deaminase"
CDS complement(10247..10258)
/label=Factor Xa site
/note="Factor Xa recognition and cleavage site"
LTR 10436..10669
/label=3' LTR (Delta-U3)
/note="self-inactivating 3' long terminal repeat (LTR) from
HIV-1"
polyA_signal 10701..10925
/label=bGH poly(A) signal
/note="bovine growth hormone polyadenylation signal"
rep_origin 10971..11399
/label=f1 ori
/note="f1 bacteriophage origin of replication; arrow
indicates direction of (+) strand synthesis"
promoter 11452..11662
/label=SV40 promoter
/note="SV40 early promoter"
promoter 11718..11765
/label=EM7 promoter
/note="synthetic bacterial promoter"
CDS 11784..12155
/label=BleoR
/note="antibiotic-binding protein"
polyA_signal 12288..12421
/label=SV40 poly(A) signal
/note="SV40 polyadenylation signal"
promoter complement(12506..12536)
/label=lac promoter
/note="promoter for the E. coli lac operon"
protein_bind complement(12551..12572)
/label=CAP binding site
/note="CAP binding activates transcription in the presence
of cAMP."
rep_origin complement(12860..13448)
/direction=LEFT
/label=ori
/note="high-copy-number ColE1/pMB1/pBR322/pUC origin of
replication"
CDS complement(13622..14479)
/label=AmpR
/note="beta-lactamase"
promoter complement(14480..14584)
/label=AmpR promoter