pREDKI vector (V007060)

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Price Information

Cat No.	Plasmid Name	Availability	Add to cart
V007060	pREDKI	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

Kanamycin low (25 ug/ml)

Vector Name:: pREDKI

Antibiotic Resistance:: Kanamycin

Length:: 9028 bp

Type:: Bacterial Expression ; Red recombinase and I-SceI

Replication origin:: pSC101 ori

Copy Number:: Low Copy

Promoter:: araBAD

Cloning Method:: Restriction Enzyme

pREDKI 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.

pREDKI vector Sequence

LOCUS       Exported                9028 bp DNA     circular SYN 06-AUG-2024
DEFINITION  E coli Genetic Modification.
ACCESSION   .
VERSION     .
KEYWORDS    .
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 9028)
  AUTHORS   Yang J, Sun B, Huang H, Jiang Y, Diao L, Chen B, Xu C, Wang X, Liu 
            J, Jiang W, Yang S
  TITLE     High-Efficiency Scarless Genetic Modification in Escherichia coli by
            Using Lambda Red Recombination and I-SceI Cleavage.
  JOURNAL   Appl Environ Microbiol. 2014 Jul 1;80(13):3826-3834. Epub 2014 Apr 
            18.
  PUBMED    24747889
REFERENCE   2  (bases 1 to 9028)
  TITLE     Direct Submission
REFERENCE   3  (bases 1 to 9028)
  TITLE     Direct Submission
REFERENCE   4  (bases 1 to 9028)
  AUTHORS   .
  TITLE     Direct Submission
COMMENT     SGRef: number: 1; type: "Journal Article"; journalName: "Appl
            Environ Microbiol."; date: "2014-07-1"; volume: "80(13)"; pages: 
            "3826-3834. Epub 2014 Apr 18"
COMMENT     SGRef: number: 2; type: "Journal Article"
COMMENT     SGRef: number: 3; type: "Journal Article"
FEATURES             Location/Qualifiers
     source          1..9028
                     /mol_type="other DNA"
                     /organism="synthetic DNA construct"
     CDS             complement(22..897)
                     /codon_start=1
                     /label=araC
                     /note="L-arabinose regulatory protein"
                     /translation="MAEAQNDPLLPGYSFNAHLVAGLTPIEANGYLDFFIDRPLGMKGY
                     ILNLTIRGQGVVKNQGREFVCRPGDILLFPPGEIHHYGRHPEAREWYHQWVYFRPRAYW
                     HEWLNWPSIFANTGFFRPDEAHQPHFSDLFGQIINAGQGEGRYSELLAINLLEQLLLRR
                     MEAINESLHPPMDNRVREACQYISDHLADSNFDIASVAQHVCLSPSRLSHLFRQQLGIS
                     VLSWREDQRISQAKLLLSTTRMPIATVGRNVGFDDQLYFSRVFKKCTGASPSEFRAGCE
                     EKVNDVAVKLS"
     promoter        924..1208
                     /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)"
     RBS             1235..1243
                     /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             1252..1665
                     /codon_start=1
                     /label=Gam
                     /note="inhibitor of the host RecBCD nuclease in the lambda
                     Red system"
                     /translation="MDINTETEIKQKHSLTPFPVFLISPAFRGRYFHSYFRSSAMNAYY
                     IQDRLEAQSWARHYQQLAREEKEAELADDMEKGLPQHLFESLCIDHLQRHGASKKSITR
                     AFDDDVEFQERMAEHIRYMVETIAHHQVDIDSEV"
     CDS             1674..2456
                     /codon_start=1
                     /label=Beta
                     /note="single-stranded DNA binding recombinase in the
                     lambda Red system"
                     /translation="MSTALATLAGKLAERVGMDSVDPQELITTLRQTAFKGDASDAQFI
                     ALLIVANQYGLNPWTKEIYAFPDKQNGIVPVVGVDGWSRIINENQQFDGMDFEQDNESC
                     TCRIYRKDRNHPICVTEWMDECRREPFKTREGREITGPWQSHPKRMLRHKAMIQCARLA
                     FGFAGIYDKDEAERIVENTAYTAERQPERDITPVNDETMQEINTLLIALDKTWDDDLLP
                     LCSQIFRRDIRASSELTQAEAVKALGFLKQKAAEQKVAA"
     CDS             2456..3133
                     /codon_start=1
                     /label=Exo
                     /note="5' to 3' double-stranded DNA exonuclease in the
                     lambda
                     Red system"
                     /translation="MTPDIILQRTGIDVRAVEQGDDAWHKLRLGVITASEVHNVIAKPR
                     SGKKWPDMKMSYFHTLLAEVCTGVAPEVNAKALAWGKQYENDARTLFEFTSGVNVTESP
                     IIYRDESMRTACSPDGLCSDGNGLELKCPFTSRDFMKFRLGGFEAIKSAYMAQVQYSMW
                     VTRKNAWYFANYDPRMKREGLHYVVIERDEKYMASFDEIVPEFIEKMDEALAEIGFVFG
                     EQWR"
     terminator      3137..3381
                     /label=lambda tL3 terminator
                     /note="transcription terminator tL3 from phage lambda"
     CDS             complement(3417..4262)
                     /codon_start=1
                     /label=rhaR
                     /note="transcriptional activator of rhaR and rhaS"
                     /translation="VAHQLKLLKDDFFASDQQAVAVADRYPQDVFAEHTHDFCELVIVW
                     RGNGLHVLNDRPYRITRGDLFYIHADDKHSYASVNDLVLQNIIYCPERLKLNLDWQGAI
                     PGFNASAGQPHWRLGSMGMAQARQVIGQLEHESSQHVPFANEMAELLFGQLVMLLNRHR
                     YTSDSLPPTSSETLLDKLITRLAASLKSPFALDKFCDEASCSERVLRQQFRQQTGMTIN
                     QYLRQVRVCHAQYLLQHSRLLISDISTECGFEDSNYFSVVFTRETGMTPSQWRHLNSQK
                     D"
     CDS             complement(4339..5172)
                     /codon_start=1
                     /label=rhaS
                     /note="positive regulator of the rhaB promoter"
                     /translation="MTVLHSVDFFPSGNASVAIEPRLPQADFPEHHHDFHEIVIVEHGT
                     GIHVFNGQPYTITGGTVCFVRDHDRHLYEHTDNLCLTNVLYRSPDRFQFLAGLNQLLPQ
                     ELDGQYPSHWRVNHSVLQQVRQLVAQMEQQEGENDLPSTASREILFMQLLLLLRKSSLQ
                     ENLENSASRLNLLLAWLEDHFADEVNWDAVADQFSLSLRTLHRQLKQQTGLTPQRYLNR
                     LRLMKARHLLRHSEASVTDIAYRCGFSDSNHFSTLFRREFNWSPRDIRQGRDGFLQ"
     promoter        5318..5436
                     /label=rhaB promoter
                     /note="promoter of the E. coli rhaBAD operon, conferring 
                     tight induction with L-rhamnose and repression with 
                     D-glucose in the presence of RhaR and RhaS (Giacalone et 
                     al., 2006)"
     CDS             5459..6094
                     /codon_start=1
                     /product="Intron-encoded endonuclease"
                     /label=I-SceI
                     /translation="MHQKNQVMNLGPNSKLLKEYKSQLIELNIEQFEAGIGLILGDAYI
                     RSRDEGKTYCMQFEWKNKAYMDHVCLLYDQWVLSFKHQAFNKLANLFIVNNKKTIPNNL
                     VENYLTPMSLAYWFMDDGGKWDYNKNSTNKSIVLNTQSFTFEEVEYLVKGLRNKFQLNC
                     YVKINKNKPIIYIDSMSYLIFYNLIKPYLIPQMMYKLPNTISSETFLK"
     CDS             complement(6208..7155)
                     /codon_start=1
                     /label=Rep101
                     /note="RepA protein needed for replication with the pSC101 
                     origin"
                     /translation="MSELVVFKANELAISRYDLTEHETKLILCCVALLNPTIENPTRKE
                     RTVSFTYNQYAQMMNISRENAYGVLAKATRELMTRTVEIRNPLVKGFEIFQWTNYAKFS
                     SEKLELVFSEEILPYLFQLKKFIKYNLEHVKSFENKYSMRIYEWLLKELTQKKTHKANI
                     EISLDEFKFMLMLENNYHEFKRLNQWVLKPISKDLNTYSNMKLVVDKRGRPTDTLIFQV
                     ELDRQMDLVTELENNQIKMNGDKIPTTITSDSYLRNGLRKTLHDALTAKIQLTSFEAKF
                     LSDMQSKYDLNGSFSWLTQKQRTTLENILAKYGRI"
     rep_origin      complement(7203..7425)
                     /direction=LEFT
                     /label=pSC101 ori
                     /note="low-copy replication origin that requires the Rep101
                     protein"
     CDS             8191..9003
                     /codon_start=1
                     /label=KanR
                     /note="aminoglycoside phosphotransferase"
                     /translation="MSHIQRETSCSRPRLNSNMDADLYGYKWARDNVGQSGATIYRLYG
                     KPDAPELFLKHGKGSVANDVTDEMVRLNWLTEFMPLPTIKHFIRTPDDAWLLTTAIPGK
                     TAFQVLEEYPDSGENIVDALAVFLRRLHSIPVCNCPFNSDRVFRLAQAQSRMNNGLVDA
                     SDFDDERNGWPVEQVWKEMHKLLPFSPDSVVTHGDFSLDNLIFDEGKLIGCIDVGRVGI
                     ADRYQDLAILWNCLGEFSPSLQKRLFQKYGIDNPDMNKLQFHLMLDEFF"