Key result
8-Aza substitution at adenosine in RNA substrates accelerates deamination by ADAR2 (2.8-17-fold), and 8-azanebularine inhibits the ADAR2 reaction (IC50 = 15 +/- 3 mM).
Population
ADAR2 enzyme and RNA substrates (in vitro model)
Comparison
Substrate analogues (8-aza substitution… vs Natural adenosine substrate and adenosine…
Design
Preclinical
Authors
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Limited mechanistic insight into ADAR catalysis leaves open targeted RNA-editing therapies; prospective studies needed before clinical translation.
The study elucidates the active site and reaction mechanism of ADAR2, identifying 8-azanebularine as an inhibitor of the enzyme.
Véliz et al. (2003) studied this question. Substrate analogues (e.g., 8-aza substituted adenosine, 8-azanebularine) vs. Natural adenosine substrates was evaluated on Rate of deamination and enzyme inhibition. 8-Aza substitution at adenosine in RNA substrates accelerates deamination by ADAR2 (2.8-17-fold), and 8-azanebularine inhibits the ADAR2 reaction (IC50 = 15 +/- 3 mM).
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