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A “Nano-Dial” Molecular Computing Model Based on Circular DNA

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A novel molecular computing model based on circular DNA was developed to solve a 3-coloring graph problem. This computing model uses circular DNA and works as to dial a number. The method of selecting true solutions is similar to dialing on a telephone. Moreover, the key methods in this model were circularization of single single-strand DNA (ssDNA) molecules and a backtracking deletion algorithm. In the course of computing, the structure of the DNA molecule was transformed into linear double-strand DNA (dsDNA), linear ssDNA, and circular ssDNA. For a 3-coloring graph problem with n vertices, the algorithm time complexity and the space complexity are both O(n2) at most. The computing achievement by this model indicates that circular DNA has extensive applications in molecular computing research.

Keywords: 3-coloring graph problem; Circular DNA; algorithm complexity; backtracking

Document Type: Research Article


Publication date: 2010-06-01

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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