2020
DOI: 10.1021/acssynbio.9b00475
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The Theophylline Aptamer: 25 Years as an Important Tool in Cellular Engineering Research

Abstract: The theophylline aptamer was isolated from an oligonucleotide library in 1994. Since that time, the aptamer has found wide utility, particularly in synthetic biology, cellular engineering, and diagnostic applications. The primary application of the theophylline aptamer is in the construction and characterization of synthetic riboswitches for regulation of gene expression. These riboswitches have been used to control cellular motility, regulate carbon metabolism, construct logic gates, screen for mutant enzymes… Show more

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Cited by 44 publications
(42 citation statements)
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“…In 1994, Jenison et al [28] used SELEX to isolate RNA molecules with high affinity for theophylline. From the pool of selected molecules, TCT8-4 RNA was truncated into the mTCT8-4 aptamer that is now simply referred to as the canonical theophylline aptamer [29]. This sequence shortening increased the affinity of the RNA for the drug, as the dissociation constant KD decreased from 0.6 to 0.1 μM [28].…”
Section: Theophylline Aptamersmentioning
confidence: 99%
“…In 1994, Jenison et al [28] used SELEX to isolate RNA molecules with high affinity for theophylline. From the pool of selected molecules, TCT8-4 RNA was truncated into the mTCT8-4 aptamer that is now simply referred to as the canonical theophylline aptamer [29]. This sequence shortening increased the affinity of the RNA for the drug, as the dissociation constant KD decreased from 0.6 to 0.1 μM [28].…”
Section: Theophylline Aptamersmentioning
confidence: 99%
“…The riboswitches used to control CRISPR/Cas9 systems in bacteria have been based mainly on the synthetic theophylline-specific aptamer. 29 This aptamer was used by Topp and coworkers to develop a set of six theophylline-inducible riboswitches (A-E + E*), widely applicable in different bacteria. 30 These riboswitches regulate the expression of a downstream gene at the translational level by blocking access to the mRNA's ribosome binding site (RBS) when no theophylline ligand is bound.…”
Section: Introductionmentioning
confidence: 99%
“…The theophylline aptamer as one of the most prominent examples, is able to discriminate between theophylline and caffeine by a 10 000-fold decrease in affinity, although the compounds only differ in one single methyl group. [109,110]…”
Section: Artificial Rna Aptamersmentioning
confidence: 99%
“…[123] Moreover, selfcleaving ribozymes were designed with various aptamer domains attached to the core structures of hammerhead ribozymes. [109,115] Hitherto, also RNA degradation and viral replication were successfully controlled by artificial riboswitches. [119] Despite the numerous implementations of engineered riboswitches, the criteria that make an artificial aptamer a functional in vivo riboswitch are still under debate.…”
Section: Engineered Riboswitchesmentioning
confidence: 99%
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