molecular spiders are nanoscale walkers made withdna enzyme legs attached to a common body. they move over a surface of dna substrates, cleaving them and leaving behind product dna strands, which they are able to rev...
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ISBN:
(纸本)9783642236372;9783642236389
molecular spiders are nanoscale walkers made withdna enzyme legs attached to a common body. they move over a surface of dna substrates, cleaving them and leaving behind product dna strands, which they are able to revisit. Simple one-dimensional models of spider motion show significant superdiffusive motion when the leg-substrate bindings are longer-lived than the leg-product bindings. this gives the spiders potential as a faster-than-diffusion transport mechanism. However, analysis shows that single-spider motion eventually decays into an ordinary diffusive motion, owing to the ever increasing size of the region of cleaved products. Inspired by cooperative behavior of natural molecular walkers, we propose a model for multiple walkers moving collectively over a one-dimensional lattice. We show that when walkers are sequentially released from the origin, the collective effect is to prevent the leading walkers from moving too far backwards. Hence there is an effective outward pressure on the leading walkers that keeps them moving superdiffusively for longer times, despite the growth of the product region.
molecularprogramming is an emerging field concerned with building synthetic biomolecularcomputing devices at the nanoscale, for example from dna or RNA molecules. Many promising applications have been proposed, rang...
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ISBN:
(数字)9783319194882
ISBN:
(纸本)9783319194882;9783319194875
molecularprogramming is an emerging field concerned with building synthetic biomolecularcomputing devices at the nanoscale, for example from dna or RNA molecules. Many promising applications have been proposed, ranging from diagnostic biosensors and nanorobots to synthetic biology, but prohibitive complexity and imprecision of experimental observations makes reliability of molecular programs difficult to achieve. this paper advocates the development of design automation methodologies for molecularprogramming, highlighting the role of quantitative verification in this context. We focus on dna 'walker' circuits, in which molecules can be programmed to traverse tracks placed on a dna origami tile, taking appropriate decisions at junctions and reporting the outcome when reaching the end of the track. the behaviour of molecular walkers is inherently probabilistic and thus probabilistic model checking methods are needed for their analysis. We demonstrate how dna walkers can be modelled using stochastic Petri nets, and apply statistical model checking using the tool Cosmos to analyse the reliability and performance characteristics of the designs. the results are compared and contrasted withthose obtained for the PRISM model checker. the paper ends by summarising future research challenges in the field.
this book constitutes the refereed proceedings of the 23thinternationalconference on dnacomputing and molecularprogramming, dna 23, held Austin, TX, USA, in September 2017. the 16 full papers presented were carefu...
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ISBN:
(数字)9783319667997
ISBN:
(纸本)9783319667980
this book constitutes the refereed proceedings of the 23thinternationalconference on dnacomputing and molecularprogramming, dna 23, held Austin, TX, USA, in September 2017. the 16 full papers presented were carefully selected from 23 submissions. Research in dnacomputing aims to draw together mathematics, computerscience, physics, chemistry, biology, and nanotechnology to address the analysis, design, and synthesis of information-based molecular systems. the papers address all areas related to biomolecularcomputing such as: algorithms and models for computation with biomolecular systems; computational processes in vitro and in vivo; molecular motors and molecular robotics; studies of fault-tolerance and error correction; software tools for analysis, simulation, and design; synthetic biology and in vitro evolution; applications in engineering, physics, chemistry, biology, and medicine.
this book constitutes the refereed proceedings of the 18thinternationalconference on dnacomputing and molecularprogramming, dna 18, held in Aarhus, Denmark, in August 2012.the 11 full papers presented were careful...
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ISBN:
(数字)9783642322082
ISBN:
(纸本)9783642322075
this book constitutes the refereed proceedings of the 18thinternationalconference on dnacomputing and molecularprogramming, dna 18, held in Aarhus, Denmark, in August 2012.
the 11 full papers presented were carefully selected from 37 submissions. the papers are organized in topical sections on advancing the engineering and science of biology and chemistry from the point of view of computer science, physics, and mathematics.
this book constitutes the refereed proceedings of the 19thinternationalconference on dnacomputing and molecularprogramming, dna 19, held in Tempe, AZ, USA, in September 2013. the 14 full papers presented were care...
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ISBN:
(数字)9783319019284
ISBN:
(纸本)9783319019277
this book constitutes the refereed proceedings of the 19thinternationalconference on dnacomputing and molecularprogramming, dna 19, held in Tempe, AZ, USA, in September 2013. the 14 full papers presented were carefully selected from 29 submissions. the papers are organized in many disciplines (including mathematics, computer science, physics, chemistry, material science and biology) to address the analysis, design, and synthesis of information-based molecular systems.
the thermodynamic binding networks (TBN) model [9] is a tool for studying engineered molecular systems. the TBN model allows one to reason about their behavior through a simplified abstraction that ignores details abo...
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A dna stack nano-device is a bio-computing system that can read and write molecular signals based on dna-dna hybridisation and strand displacement. In vitro implementation of the dna stack faces a number of challenges...
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dna tile self-assembly has emerged as a rich and promising primitive for nano-technology. this paper studies the problems of minimizing assembly time and error rate by changing the tile concentrations because changing...
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ISBN:
(纸本)9783642183041
dna tile self-assembly has emerged as a rich and promising primitive for nano-technology. this paper studies the problems of minimizing assembly time and error rate by changing the tile concentrations because changing the tile concentrations is easy to implement in actual lab experiments. We prove that setting the concentration of tile T-i proportional to the square root of N-i where N-i is the number of times T-i appears outside the seed structure in the final assembled shape minimizes the rate of growth errors for rectilinear tile systems. We also show that the same concentrations minimize the expected assembly time for a feasible class of tile systems. Moreover, for general tile systems, given tile concentrations, we can approximate the expected assembly time with high accuracy and probability by running only a polynomial number of simulations in the size of the target shape.
dna sequence analysis depends on the accurate assembly of fragment reads for the determination of a consensus sequence. this report examines the possibility of analyzing multiple, independent restriction digests as a ...
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this book constitutes the refereed proceedings of the 20thinternationalconference on dnacomputing and molecularprogramming, dna 20, held in Kyoto, Japan, in September 2014. the 10 full papers presented were carefu...
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ISBN:
(数字)9783319112954
ISBN:
(纸本)9783319112947
this book constitutes the refereed proceedings of the 20thinternationalconference on dnacomputing and molecularprogramming, dna 20, held in Kyoto, Japan, in September 2014. the 10 full papers presented were carefully selected from 55 submissions. the papers are organized in many disciplines (including mathematics, computer science, physics, chemistry, material science and biology) to address the analysis, design, and synthesis of information-based molecular systems.
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