Natural Computing

, Volume 5, Issue 2, pp 183–202 | Cite as

A DNA Superstructure-based Replicator without Product Inhibition

  • David Y. ZhangEmail author
  • Bernard Yurke


A monomer structure based on a hairpin loop is described that can be linked via short oligonucleotide sequences (linkers) to form polymers. Independence of linked monomers allow for exponential complexity of the polymer structure. A method is described wherein the polymer structure can be replicated semi-conservatively with fidelity, given a source of monomer structures and linkers. Furthermore, the separation of the product from the parent allows for exponential amplification. These steps are achieved by secondary structure constraints and toehold-mediated strand displacement, and occur in the absence of enzymes. The parallel polymerization allows for replication to be achieved in O(log N) time, as opposed to O(N) from a processive process.


DNA based polymers DNA motors self-replication 


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Copyright information

© Springer 2006

Authors and Affiliations

  1. 1.Caltech M/C 136-93California Institute of TechnologyPasadenaUSA
  2. 2.Bell LaboratoriesMurray HillUSA

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