Words similar to aptazyme
Example sentences for: aptazyme
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Each of the successful aptazyme constructs was subsequently cloned into an interrupted thymidylate synthase gene in place of the parental td self-splicing intron.
For example, the junction between the aptamer and the Group I ribozyme in the aptazyme Th2P6 resembled the deletion variant td ΔP6-6; the aptazyme was activated by theophylline, while the splicing defect of the deletion variant at 3 mM magnesium was suppressed by 8 mM magnesium or by stabilization of a tetraloop sequence that capped the P6 helix [ 15 ] . Defects that poise a ribozyme between active and inactive conformers have previously been used to engineer effector-dependence [ 20 ] .
In contrast, the original aptamer was known to also bind 3-methylxanthine, and the original Group I aptazyme (Th2P6) also proved to be responsive to 3-methylxanthine in vivo (Figure 6c).
Finally, no growth was observed in a negative control that contained a non-functional Group I intron (B11), and no theophylline-dependent changes in growth were observed in a negative control in which mutations were introduced into the aptazyme to abolish theophylline binding (Th2P6.D).
The parental P6 aptazyme construct was generated by two overlapping oligos, Gp1Wt2 Gp1Wt2.
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