Entry Cloning

StarGate¢ç Standard Cloning Principle in Detail

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Step1: Standard Entry Cloning Step for Donor Vector generation.
The gene of interest (GOI) has to be equipped in a first PCR-step at both termini with combinatorial sites and the StarCombinase1¢â recognition area which are important for oriented insertion of the PCR fragment into pENTRY-IBA51.
Recombination of the PCR product and the Entry Vector at the combinatorial sites (red and orange) leads to generation of the Donor Vector under loss of all StarCombinase1¢â binding areas (dark orange with arrowheads) making the recombination reaction unidirectional and thereby highly efficient.
In the resulting Donor Vector the same combinatorial sites are now under control of StarCombinase2¢â (light blue) thereby enabling  a highly efficient and specific StarGate gene transfer process into Acceptor Vectors in a similar manner (Step2).
 
NEW Combi Entry Cloning Set (for appropriate primers use StarPrimer D¢¥Signer Software**
**Please note IBA has changed the Entry Cloning Step by May 2010. If you have used StarGate¢ç in the past please check the sequence of your Entry Cloning Primers

References

  1. Belfield, EJ, Hughes RK, Tsesmetzis, N, Naldrett, MJ, Casey, R (2007). 
    The gateway pDEST17 expression vector encodes a –1 ribosomal frameshifting sequence.
    NAR 35 (4), 1322-1332.
  2. Boshart, M, Weber, F, Jahn, G, Dorsch-Häsler, K, Fleckenstein, B, and Schaffner, W (1985). 
    A Very Strong Enhancer is Located Upstream of an Immediate Early Gene of Human Cytomegalovirus.
    Cell 41, 521-530.
  3. Gietz, RD, Sugino, A (1988). 
    New yeast-Escherichia coli shuttle vectors constructed with in vitro mutagenized yeast genes lacking six-base pair restriction sites. Gene 74, 527-34. Macreadie, IG, Horaitis, O, Verkuylen, AJ, Savin, KW (1991). Improved shuttle vectors for cloning and high-level Cu(2+)-mediated expression of foreign genes in yeast
    Gene 104, 107-11.
  4. Nelson, JA, Reynolds-Kohler, C, and Smith, BA (1987). 
    Negative and Positive Regulation by a Short Segment in the 5¢¥-Flanking Region of the Human Cytomegalovirus Major Immediate-Early Gene. 
    Mol. Cell. Biol. 7, 4125-4129.
  5. Skerra, A. (1994). 
    Use of the tetracycline promoter for the tightly regulated production of a murine antibody fragment in Escherichia coli.
    Gene 151, 131-135.
  6. Studier, FW, Rosenberg, AH, Dunn, JJ, Dubendorff, JW (1990). 
    Use of the T7 RNA polymerase to direct expression of cloned genes.
    Meth. Enzymol. 185, 60-89.
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