Price Information
| Cat No. | Plasmid Name | Availability | Add to cart |
|---|---|---|---|
| V012287 | pCas | In stock, instant shipping |
Buy one, get one free! |
Two tubes of lyophilized plasmid will be delivered, each tube is about 5µg.
Basic Vector Information
pCas is for constitutive expression of cas9 and inducible expression of lambda RED and sgR. It can work together with the pTargetF vector (V012144). Please note that it must be grown at 30C. Vector has temperature-sensitive replication (RepA101ts).
- Vector Name:
- pCas
- Antibiotic Resistance:
- Kanamycin
- Length:
- 12542 bp
- Type:
- CRISPR Plasmids
- Replication origin:
- pSC101 ori
- Source/Author:
- Jiang Y, Chen B, Duan C, Sun B, Yang J, Yang S.
- Copy Number:
- Low copy number
- Promoter:
- araBAD
- Growth Strain(s):
- Stbl3
- Growth Temperature:
- 30℃
pCas 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
- Jiang Y, Chen B, Duan C, Sun B, Yang J, Yang S. Multigene editing in the Escherichia coli genome via the CRISPR-Cas9 system. Appl Environ Microbiol. 2015 Apr;81(7):2506-14. doi: 10.1128/AEM.04023-14. Epub 2015 Jan 30. Erratum in: Appl Environ Microbiol. 2016 Jun 15;82(12):3693.
pCas vector Sequence
LOCUS Exported 12542 bp DNA circular SYN 12-JUL-2024
DEFINITION Constitutive expression of cas9 and inducible expression of lambda
RED and sgR.
ACCESSION .
VERSION .
KEYWORDS pCas
SOURCE synthetic DNA construct
ORGANISM synthetic DNA construct
REFERENCE 1 (bases 1 to 12542)
AUTHORS Jiang Y, Chen B, Duan C, Sun B, Yang J, Yang S
TITLE Multigene editing in the Escherichia coli genome using the
CRISPR-Cas9 system.
JOURNAL Appl Environ Microbiol. 2015 Jan 30. pii: AEM.04023-14.
PUBMED 25636838
REFERENCE 2 (bases 1 to 12542)
AUTHORS .
TITLE Direct Submission
COMMENT SGRef: number: 1; type: "Journal Article"; journalName: "Appl
Environ Microbiol. 2015 Jan 30. pii: AEM.04023-14."
FEATURES Location/Qualifiers
source 1..12542
/mol_type="other DNA"
/organism="synthetic DNA construct"
CDS 286..4392
/codon_start=1
/product="Cas9 (Csn1) endonuclease from the Streptococcus
pyogenes Type II CRISPR/Cas system"
/label=Cas9
/note="generates RNA-guided double strand breaks in DNA"
/translation="MDKKYSIGLDIGTNSVGWAVITDEYKVPSKKFKVLGNTDRHSIKK
NLIGALLFDSGETAEATRLKRTARRRYTRRKNRICYLQEIFSNEMAKVDDSFFHRLEES
FLVEEDKKHERHPIFGNIVDEVAYHEKYPTIYHLRKKLVDSTDKADLRLIYLALAHMIK
FRGHFLIEGDLNPDNSDVDKLFIQLVQTYNQLFEENPINASGVDAKAILSARLSKSRRL
ENLIAQLPGEKKNGLFGNLIALSLGLTPNFKSNFDLAEDAKLQLSKDTYDDDLDNLLAQ
IGDQYADLFLAAKNLSDAILLSDILRVNTEITKAPLSASMIKRYDEHHQDLTLLKALVR
QQLPEKYKEIFFDQSKNGYAGYIDGGASQEEFYKFIKPILEKMDGTEELLVKLNREDLL
RKQRTFDNGSIPHQIHLGELHAILRRQEDFYPFLKDNREKIEKILTFRIPYYVGPLARG
NSRFAWMTRKSEETITPWNFEEVVDKGASAQSFIERMTNFDKNLPNEKVLPKHSLLYEY
FTVYNELTKVKYVTEGMRKPAFLSGEQKKAIVDLLFKTNRKVTVKQLKEDYFKKIECFD
SVEISGVEDRFNASLGTYHDLLKIIKDKDFLDNEENEDILEDIVLTLTLFEDREMIEER
LKTYAHLFDDKVMKQLKRRRYTGWGRLSRKLINGIRDKQSGKTILDFLKSDGFANRNFM
QLIHDDSLTFKEDIQKAQVSGQGDSLHEHIANLAGSPAIKKGILQTVKVVDELVKVMGR
HKPENIVIEMARENQTTQKGQKNSRERMKRIEEGIKELGSQILKEHPVENTQLQNEKLY
LYYLQNGRDMYVDQELDINRLSDYDVDHIVPQSFLKDDSIDNKVLTRSDKNRGKSDNVP
SEEVVKKMKNYWRQLLNAKLITQRKFDNLTKAERGGLSELDKAGFIKRQLVETRQITKH
VAQILDSRMNTKYDENDKLIREVKVITLKSKLVSDFRKDFQFYKVREINNYHHAHDAYL
NAVVGTALIKKYPKLESEFVYGDYKVYDVRKMIAKSEQEIGKATAKYFFYSNIMNFFKT
EITLANGEIRKRPLIETNGETGEIVWDKGRDFATVRKVLSMPQVNIVKKTEVQTGGFSK
ESILPKRNSDKLIARKKDWDPKKYGGFDSPTVAYSVLVVAKVEKGKSKKLKSVKELLGI
TIMERSSFEKNPIDFLEAKGYKEVKKDLIIKLPKYSLFELENGRKRMLASAGELQKGNE
LALPSKYVNFLYLASHYEKLKGSPEDNEQKQLFVEQHKHYLDEIIEQISEFSKRVILAD
ANLDKVLSAYNKHRDKPIREQAENIIHLFTLTNLGAPAAFKYFDTTIDRKRYTSTKEVL
DATLIHQSITGLYETRIDLSQLGGD"
CDS complement(4522..5400)
/codon_start=1
/gene="araC"
/product="L-arabinose regulatory protein"
/label=araC
/translation="MAEAQNDPLLPGYSFNAHLVAGLTPIEANGYLDFFIDRPLGMKGY
ILNLTIRGQGVVKNQGREFVCRPGDILLFPPGEIHHYGRHPEAREWYHQWVYFRPRAYW
HEWLNWPSIFANTGFFRPDEAHQPHFSDLFGQIINAGQGEGRYSELLAINLLEQLLLRH
MEAINESLHPPMDNRVREACQYISDHLADSNFDIASVAQHVCLSPSRLSHLFRQQLGIS
VLSWREDQRISQAKLLLSTTRMPIATVGRNVGFDDQLYFSRVFKKCTGASPSEFRAGCE
EKVNDVAVKLS"
promoter 5427..5711
/gene="araBAD"
/label=araBAD promoter
/note="promoter of the L-arabinose operon of E. coli; the
araC regulatory gene is transcribed in the opposite
direction (Guzman et al., 1995)"
primer_bind 5634..5653
/label=pBAD Forward
/note="For vectors with E. coli araBAD promoter, forward
primer"
RBS 5738..5746
/label=Shine-Dalgarno sequence
/note="full consensus sequence for ribosome-binding sites
upstream of start codons in E. coli; complementary to a
region in the 3' end of the 16S rRNA (Chen et al., 1994)"
CDS 5755..6171
/codon_start=1
/gene="gam"
/product="inhibitor of the host RecBCD nuclease in the
lambda Red system"
/label=Gam
/note="protects the double-stranded DNA substrate for
recombination"
/translation="MDINTETEIKQKHSLTPFPVFLISPAFRGRYFHSYFRSSAMNAYY
IQDRLEAQSWARHYQQLAREEKEAELADDMEKGLPQHLFESLCIDHLQRHGASKKSITR
AFDDDVEFQERMAEHIRYMVETIAHHQVDIDSEV"
CDS 6177..6962
/codon_start=1
/gene="bet"
/product="single-stranded DNA binding recombinase in the
lambda Red system"
/label=Beta
/note="mediates pairing of a single-stranded DNA with a
complementary target"
/translation="MSTALATLAGKLAERVGMDSVDPQELITTLRQTAFKGDASDAQFI
ALLIVANQYGLNPWTKEIYAFPDKQNGIVPVVGVDGWSRIINENQQFDGMDFEQDNESC
TCRIYRKDRNHPICVTEWMDECRREPFKTREGREITGPWQSHPKRMLRHKAMIQCARLA
FGFAGIYDKDEAERIVENTAYTAERQPERDITPVNDETMQEINTLLIALDKTWDDDLLP
LCSQIFRRDIRASSELTQAEAVKALGFLKQKAAEQKVAA"
CDS 6959..7639
/codon_start=1
/gene="exo"
/product="5' to 3' double-stranded DNA exonuclease in the
lambda Red system"
/label=Exo
/note="creates 3' single-stranded DNA tails"
/translation="MTPDIILQRTGIDVRAVEQGDDAWHKLRLGVITASEVHNVIAKPR
SGKKWPDMKMSYFHTLLAEVCTGVAPEVNAKALAWGKQYENDARTLFEFTSGVNVTESP
IIYRDESMRTACSPDGLCSDGNGLELKCPFTSRDFMKFRLGGFEAIKSAYMAQVQYSMW
VTRKNAWYFANYDPRMKREGLHYVVIERDEKYMASFDEIVPEFIEKMDEALAEIGFVFG
EQWR"
terminator 7640..7884
/label=-lambda tL3 terminator
/note="transcription terminator tL3 from phage lambda"
misc_RNA complement(7928..8003)
/label=gRNA scaffold
/note="guide RNA scaffold for the Streptococcus pyogenes
CRISPR/Cas9 system"
protein_bind 8033..8049
/label=lac operator
/bound_moiety="lac repressor encoded by 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)."
CDS complement(8318..9400)
/codon_start=1
/gene="lacI"
/product="lac repressor"
/label=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
NYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVERSGV
EACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSIIFSH
EDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSA
MSGFQQTMQMLNEGIVPTAMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSC
YIPPLTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLPVSLVKRKTTLAPNTQTASPR
ALADSLMQLARQVSRLESGQ"
primer_bind 9362..9381
/label=LacI-R
/note="LacI, reverse primer"
promoter complement(9401..9478)
/gene="lacI (mutant)"
/label=lacIq promoter
/note="In the lacIq allele, a single base change in the
promoter boosts expression of the lacI gene about 10-fold."
CDS complement(9611..10561)
/codon_start=1
/gene="rep101 encoding an A56V mutation"
/product="temperature-sensitive version of the RepA protein
needed for replication with the pSC101 origin (Armstrong et
al., 1984)"
/label=Rep101(Ts)
/translation="MSELVVFKANELAISRYDLTEHETKLILCCVALLNPTIENPTRKE
RTVSFTYNQYVQMMNISRENAYGVLAKATRELMTRTVEIRNPLVKGFEIFQWTNYAKFS
SEKLELVFSEEILPYLFQLKKFIKYNLEHVKSFENKYSMRIYEWLLKELTQKKTHKANI
EISLDEFKFMLMLENNYHEFKRLNQWVLKPISKDLNTYSNMKLVVDKRGRPTDTLIFQV
ELDRQMDLVTELENNQIKMNGDKIPTTITSDSYLHNGLRKTLHDALTAKIQLTSFEAKF
LSDMQSKYDLNGSFSWLTQKQRTTLENILAKYGRI"
rep_origin 10609..10831
/label=pSC101 ori
/note="low-copy replication origin that requires the Rep101
protein"
CDS complement(11483..12298)
/codon_start=1
/gene="aph(3')-Ia"
/product="aminoglycoside phosphotransferase"
/label=KanR
/note="confers resistance to kanamycin in bacteria or G418
(Geneticin(R)) in eukaryotes"
/translation="MSHIQRETSCSRPRLNSNMDADLYGYKWARDNVGQSGATIYRLYG
KPDAPELFLKHGKGSVANDVTDEMVRLNWLTEFMPLPTIKHFIRTPDDAWLLTTAIPGK
TAFQVLEEYPDSGENIVDALAVFLRRLHSIPVCNCPFNSDRVFRLAQAQSRMNNGLVDA
SDFDDERNGWPVEQVWKEMHKLLPFSPDSVVTHGDFSLDNLIFDEGKLIGCIDVGRVGI
ADRYQDLAILWNCLGEFSPSLQKRLFQKYGIDNPDMNKLQFHLMLDEFF"
primer_bind 12206..12225
/label=Kan-R
/note="Kanamycin resistance gene, reverse primer"
primer_bind 12290..12309
/label=pENTR-R
/note="pENTR vectors, reverse primer"
misc_RNA complement(12454..12532)
/label=tracrRNA
/note="trans-activating CRISPR RNA for the Streptococcus
pyogenes CRISPR/Cas9 system"