Converting caDNAno design JSON file to all-atom PDB file

CaDNAno is a software for designing DNA origami. With the graphical interface and the built-in rules for inter-helical connections, it simplified the design process. Since its release in 2009, caDNAno has become the most popular software in designing DNA origami. This service converts a DNA origami in caDNAno (JSON format) to an all-atom structure in PDB format.

Here, we provide a smiley face for testing.

Intersted in performing all-atom simulation on your DNA origami design? Please visit our tutorial (NAMD) or tutorial (Gromacs).

Text file containing nucleotide sequence ('atcg' or 'ATCG'). Pound symbol (#) comments the remainder of a line. Other characters are ignored.
File from cadnano containing sequences for staple strands.

To obtain statistics for our funding agencies, this service collects and stores your IP address, an approximate location derived from the IP address and a timestamp each time a job is submitted. Please contact Chris Maffeo ( with questions, concerns or requests regarding privacy.