Words similar to aptamer

Example sentences for: aptamer

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, 7-methyltheophylline); the anti-theophylline aptamer is known to discriminate between caffeine and theophylline by a factor of 10,000-fold [ 10 ] . No effector-dependent growth differences were observed with cultures containing
The ligand specificity of the anti-theophylline aptamer carried over to the theophylline-dependent aptazyme, and no activation was seen with caffeine, which differed by a single methyl group from theophylline.
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 ] .
Based on these studies, we designed a series of Group I aptazymes in which the anti-theophylline aptamer was substituted for either a portion of P6 or P5 (Figure 1).
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).