RESUMEN
Allosteric ribozymes were developed by rational design and step-wise optimization. These ribozymes accelerate a Diels-Alder reaction between anthracene and maleimide derivatives. The optimized sequence is efficiently activated by theophylline under single and multiple turnover conditions and distinguishes between structurally similar effector molecules.
Asunto(s)
ARN Catalítico/química , Teofilina/química , Secuencia de Bases , Catálisis , Datos de Secuencia Molecular , Conformación de Ácido NucleicoRESUMEN
We describe the allosteric control of Diels-Alder reactions by a small organic effector, theophylline. This is achieved by converting a Diels-Alder ribozyme into an allosterically regulated system. In contrast to other published systems, we have a bond-forming reaction with two small-molecule substrates and multiple turnover. This system could be very attractive for the development of assays for a variety of analytes and can be regarded as a prototype of fully synthetic signaling cascades.
