RNA

Part:BBa_K2923001

Designed by: claire husser   Group: iGEM19_Strasbourg   (2019-09-12)


Theophylline actif aptazyme

An aptazyme is an aptamer-ribozyme combination with intrinsic RNA cleavage activity. This aptazyme sequence is specific for the theophylline (ligand). Theophylline (1,3-dimethylxanthine) is a drug used in therapy for respiratory diseases and is structurally similar to theobromine and caffeine. Aptazyme is composed of 3 different parts: a twister ribozyme module, a communication module and an aptamer module.

Figure 1: Theophylline aptazyme secondary structure. The Shine-Dalgarno (SD) and the anti-SD are shown in light blue and grey, respectively. The inactivating mutation is highlighted in yellow. The cleavage site is indicated with a grey arrow. The figure is reproduced from [Stifel, J., Spöring, M., and Hartig, J.S. (2019). Expanding the toolbox of synthetic riboswitches with guanine-dependent aptazymes. Synthetic Biology 4

The described anti-theophylline aptazyme is an switch-off. Its catalytic activity (self-cleavage) requires the absence of ligand.

Figure 2: Schematic graphic of Aptazyme switch-off catalytic activity


Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]


[edit]
Categories
//classic/rna/uncategorized
Parameters
ligandsTheophylline
switch_point2.5 mM of Theophylline