  DNA self-assembly is a robust and programmable approach for building
structures at nanoscale. Researchers around the world have proposed and
implemented different techniques to build two dimensional and three dimensional
nano structures. One such technique involves the implementation of DNA Bricks
proposed by Ke et al., 2012 to create complex three-dimensional (3D)
structures. Modeling these DNA nano structures can prove to be a cumbersome and
tedious task. Exploiting the programmability of base-pairing to produce
self-assembling custom shapes, we present a software suite 3DNA, which can be
used for modeling, editing and visualizing such complex structures. 3DNA is an
open source software which works on the simple and modular self assembly of DNA
Bricks, offering a more intuitive better approach for constructing 3D shapes.
Apart from modeling and envisaging shapes through a simple graphical user
interface, 3DNA also supports an integrated random sequence generator that
generates DNA sequences corresponding to the designed model. The software is
available at www.guptalab.org/3dna
