pECFP- N1 Plasmid


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pECFP-N1,Plasmid pECFP-N1,pECFP-N1 vector


pECFP-N1 Information

Promoter: CMV promoter

Replicator: pUC ori, F1 ori

Terminator: SV40 poly (A) signal

Plasmid classification: lactation serial plasmids; lactating plasmids; lactation cyan plasmids

Plasmid size: 4733bp

Plasmid label: C-ECFP

Prokaryotic resistance: kanamycin Kan (50 mu g/ml)

Screening markers: neomycin Neo/G418

Cloned strains of Escherichia coli, DH5 A and other Escherichia coli

Culture conditions: 37 centigrade, aerobic LB

Expression host: mammalian cells such as 293T

Culture conditions: 37 C, 5%CO2

Induction mode: no induction, instantaneous expression

5'sequencing primers: CMV-F (CGCAAATGGGCGGTAGGCGTG)

3'Sequencing Primer: Sv40-polyA-R (GAAATTTGATGCTATTGC)



pECFP-N1 Description
PECFP-N1 encodes Aequorea enhanced green fluorescent variant of Vitoria green fluorescent protein gene (GFP). The ECFP gene contains 6 amino acid substituents. Tyr-66 gives Trpsubstitution ECFP fluorescence excitation (the main peak at 433nm and the secondary peak at 453nm) and similar emission from other blue emission variants (the main peak of 475nm and the second peak of 501nm). The other five substitutions (Phe-64 to Leu; Ser-65 to Thr; Asn-146 to Ile; Met-153 to Thr; and Val-163 to Ala) enhanced the brightness and solubility of the protein, mainly due to the improved protein folding properties and the efficiency of the chromophore formation. In addition to the chromophore mutation, ECFP contains > 190 silent mutations, creating an open reading framework that is almost entirely the preferred human codon. In addition, the upstream sequences of ECFP flanks have been translated into Kozak consistent translation initiation sites. These changes increase the translation efficiency of ECFP mRNA, thereby increasing the expression of ECFP in mammalian and plant cells.

pECFP-N1 encodes an enhanced cyan fluorescent variant of the Aequorea victoria green fluorescent protein gene (GFP). The ECFP gene contains six amino acid substitutions. The Tyr-66 to Trp substitution gives ECFP fluorescence excitation (major peak at 433 nm and a minor peak at 453 nm) and emission (major peak at 475 nm and a minor peak at 501 nm) similar to other cyan emission variants (1, 2). The other five substitutions (Phe-64 to Leu; Ser-65 to Thr; Asn-146 to Ile; Met-153 to Thr; and Val-163 to Ala) enhance the brightness and solubility of the protein, primarily due to improved protein folding properties and efficiency of chromophore formation (1, 3, 4). In addition to the chromophore mutations, ECFP contains >190 silent mutations that create an open reading frame comprised almost entirely of preferred human codons (5, 6). Furthermore, upstream sequences flanking ECFP have been converted to a Kozak consensus translation initiation site (7). These changes increase the translational efficiency of the ECFP mRNA and consequently the expression of ECFP in mammalian and plant cells. The vector contains an SV40 origin of replication and a neomycin resistance (Neor ) gene for selection (using G418) in mammalian cells. A bacterial promoter upstream of this cassette (P) expresses kanamycin resistance in E. coli. The vector backbone also provides a pUC19 origin of replication for propagation in E. coli and an f1 origin for single-stranded DNA production. The MCS in pECFP-N1 is between the immediate early promoter of CMV (PCMV IE) and the ECFP coding sequences. Genes cloned into the MCS will be expressed as fusions to the N-terminus of ECFP if they are in the same reading frame as ECFP and there are no intervening stop codons. The inserted gene should include an initiating ATG codon. ECFP fusion proteins retain the fluorescent properties of the native protein in vivo. The recombinant ECFP vector can be transfected into mammalian cells using any standard transfection method. If required, stable transformants can be selected using G418 (8). pECFP-N1 can also be used simply to express ECFP in a cell line of interest (e.g., as a transfection marker). ECFP can be used for double-labeling experiments together with EYFP using standard fluorescence microscopy and the appropriate filter sets.



pECFP-N1 Sequence

LOCUS       Exported                4733 bp ds-DNA    circular SYN 19-10-2015
KEYWORDS    Untitled
SOURCE      synthetic DNA construct
  ORGANISM  synthetic DNA construct
REFERENCE   1  (bases 1 to 4733)
  AUTHORS   admin
  TITLE     Direct Submission
  JOURNAL   Exported 2015-10-19 
FEATURES             Location/Qualifiers
     source          1..4733
                     /organism="synthetic DNA construct"
                     /mol_type="other DNA"
     enhancer        61..364
                     /note="CMV enhancer"
                     /note="human cytomegalovirus immediate early enhancer"
     promoter        365..568
                     /note="CMV promoter"
                     /note="human cytomegalovirus (CMV) immediate early 
     misc_feature    591..671
                     /note="multiple cloning site"
     CDS             679..1398
                     /product="enhanced CFP"
                     /note="mammalian codon-optimized"
     polyA_signal    1521..1642
                     /note="SV40 poly(A) signal"
                     /note="SV40 polyadenylation signal"
     rep_origin      complement(1649..2104)
                     /note="f1 ori"
                     /note="f1 bacteriophage origin of replication; arrow 
                     indicates direction of (+) strand synthesis"
     promoter        2131..2235
                     /note="AmpR promoter"
     promoter        2237..2594
                     /note="SV40 promoter"
                     /note="SV40 enhancer and early promoter"
     rep_origin      2445..2580
                     /note="SV40 ori"
                     /note="SV40 origin of replication"
     CDS             2629..3423
                     /gene="aph(3')-II (or nptII)"
                     /product="aminoglycoside phosphotransferase from Tn5"
                     /note="confers resistance to neomycin, kanamycin, and G418 
     polyA_signal    3655..3702
                     /note="HSV TK poly(A) signal"
                     /note="herpesvirus thymidine kinase polyadenylation signal"
     rep_origin      4031..4619
                     /note="high-copy-number ColE1/pMB1/pBR322/pUC origin of 
        1 tagttattaa tagtaatcaa ttacggggtc attagttcat agcccatata tggagttccg
       61 cgttacataa cttacggtaa atggcccgcc tggctgaccg cccaacgacc cccgcccatt
      121 gacgtcaata atgacgtatg ttcccatagt aacgccaata gggactttcc attgacgtca
      181 atgggtggag tatttacggt aaactgccca cttggcagta catcaagtgt atcatatgcc
      241 aagtacgccc cctattgacg tcaatgacgg taaatggccc gcctggcatt atgcccagta
      301 catgacctta tgggactttc ctacttggca gtacatctac gtattagtca tcgctattac
      361 catggtgatg cggttttggc agtacatcaa tgggcgtgga tagcggtttg actcacgggg
      421 atttccaagt ctccacccca ttgacgtcaa tgggagtttg ttttggcacc aaaatcaacg
      481 ggactttcca aaatgtcgta acaactccgc cccattgacg caaatgggcg gtaggcgtgt
      541 acggtgggag gtctatataa gcagagctgg tttagtgaac cgtcagatcc gctagcgcta
      601 ccggactcag atctcgagct caagcttcga attctgcagt cgacggtacc gcgggcccgg
      661 gatccaccgg tcgccaccat ggtgagcaag ggcgaggagc tgttcaccgg ggtggtgccc
      721 atcctggtcg agctggacgg cgacgtaaac ggccacaagt tcagcgtgtc cggcgagggc
      781 gagggcgatg ccacctacgg caagctgacc ctgaagttca tctgcaccac cggcaagctg
      841 cccgtgccct ggcccaccct cgtgaccacc ctgacctggg gcgtgcagtg cttcagccgc
      901 taccccgacc acatgaagca gcacgacttc ttcaagtccg ccatgcccga aggctacgtc
      961 caggagcgca ccatcttctt caaggacgac ggcaactaca agacccgcgc cgaggtgaag
     1021 ttcgagggcg acaccctggt gaaccgcatc gagctgaagg gcatcgactt caaggaggac
     1081 ggcaacatcc tggggcacaa gctggagtac aactacatca gccacaacgt ctatatcacc
     1141 gccgacaagc agaagaacgg catcaaggcc aacttcaaga tccgccacaa catcgaggac
     1201 ggcagcgtgc agctcgccga ccactaccag cagaacaccc ccatcggcga cggccccgtg
     1261 ctgctgcccg acaaccacta cctgagcacc cagtccgccc tgagcaaaga ccccaacgag
     1321 aagcgcgatc acatggtcct gctggagttc gtgaccgccg ccgggatcac tctcggcatg
     1381 gacgag
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