RT Journal Article
SR Electronic
T1 Triggered reversible substitution of adaptive constitutional dynamic networks dictates programmed catalytic functions
JF Science Advances
JO Sci Adv
FD American Association for the Advancement of Science
SP eaav5564
DO 10.1126/sciadv.aav5564
VO 5
IS 5
A1 Yue, Liang
A1 Wang, Shan
A1 Willner, Itamar
YR 2019
UL http://advances.sciencemag.org/content/5/5/eaav5564.abstract
AB The triggered substitution of networks and their resulting functions play an important mechanism in biological transformations, such as intracellular metabolic pathways and cell differentiation. We describe the triggered, cyclic, reversible intersubstitution of three nucleic acid–based constitutional dynamic networks (CDNs) and the programmed catalytic functions guided by the interconverting CDNs. The transitions between the CDNs are activated by nucleic acid strand displacement processes acting as triggers and counter triggers, leading to the adaptive substitution of the constituents and to emerging catalytic functions dictated by the compositions of the different networks. The quantitative evaluation of the compositions of the different CDNs is achieved by DNAzyme reporters and complementary electrophoresis experiments. By coupling a library of six hairpins to the interconverting CDNs, the CDN-guided, emerging, programmed activities of three different biocatalysts are demonstrated. The study has important future applications in the development of sensor systems, finite-state logic devices, and selective switchable catalytic assemblies.