scholarly journals Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Author(s):  
Yuan-Jyue Chen ◽  
Sundipta D. Rao ◽  
Georg Seelig
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jie Deng ◽  
Andreas Walther

AbstractConcatenation and communication between chemically distinct chemical reaction networks (CRNs) is an essential principle in biology for controlling dynamics of hierarchical structures. Here, to provide a model system for such biological systems, we demonstrate autonomous lifecycles of DNA nanotubes (DNTs) by two concatenated CRNs using different thermodynamic principles: (1) ATP-powered ligation/restriction of DNA components and (2) input strand-mediated DNA strand displacement (DSD) using energy gains provided in DNA toeholds. This allows to achieve hierarchical non-equilibrium systems by concurrent ATP-powered ligation-induced DSD for activating DNT self-assembly and restriction-induced backward DSD reactions for triggering DNT degradation. We introduce indirect and direct activation of DNT self-assemblies, and orthogonal molecular recognition allows ATP-fueled self-sorting of transient multicomponent DNTs. Coupling ATP dissipation to DNA nanostructures via programmable DSD is a generic concept which should be widely applicable to organize other DNA nanostructures, and enable the design of automatons and life-like systems of higher structural complexity.


2012 ◽  
Vol 2 (4) ◽  
pp. 512-521 ◽  
Author(s):  
Anne Condon ◽  
Alan J. Hu ◽  
Ján Maňuch ◽  
Chris Thachuk

We study the potential for molecule recycling in chemical reaction systems and their DNA strand displacement realizations. Recycling happens when a product of one reaction is a reactant in a later reaction. Recycling has the benefits of reducing consumption, or waste, of molecules and of avoiding fuel depletion. We present a binary counter that recycles molecules efficiently while incurring just a moderate slowdown compared with alternative counters that do not recycle strands. This counter is an n -bit binary reflecting Gray code counter that advances through 2 n states. In the strand displacement realization of this counter, the waste—total number of nucleotides of the DNA strands consumed—is polynomial in n , the number of bits of the counter, while the waste of alternative counters grows exponentially in n . We also show that our n -bit counter fails to work correctly when many ( Θ ( n )) copies of the species that represent the bits of the counter are present initially. The proof applies more generally to show that in chemical reaction systems where all but one reactant of each reaction are catalysts, computations longer than a polynomial function of the size of the system are not possible when there are polynomially many copies of the system present.


RSC Advances ◽  
2018 ◽  
Vol 8 (37) ◽  
pp. 20941-20951 ◽  
Author(s):  
Chengye Zou ◽  
Xiaopeng Wei ◽  
Qiang Zhang

DNA strand displacement as a theoretic foundation is helpful in constructing reaction networks and DNA circuits.


2013 ◽  
Vol 13 (4) ◽  
pp. 499-516 ◽  
Author(s):  
Anne Condon ◽  
Bonnie Kirkpatrick ◽  
Ján Maňuch

2009 ◽  
Vol 15 (5) ◽  
pp. 578-597
Author(s):  
Marcello Farina ◽  
Sergio Bittanti

2017 ◽  
Vol 121 (12) ◽  
pp. 2594-2602 ◽  
Author(s):  
Xiaoping Olson ◽  
Shohei Kotani ◽  
Bernard Yurke ◽  
Elton Graugnard ◽  
William L. Hughes

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