Plasmids are autonomously replicating extra-chromosomal circular DNA molecules, distinct from the normal bacterial genome and nonessential for cell survival under nonselective conditions. Plasmid processor is a simple tool for plasmid presentation for scientific & educational purposes. It features both circular and linear DNA, user defined restriction sites, genes & multiple cloning sites. In addition, you can manipulate plasmids by inserting and deleting fragments. Created drawings can be copied to clipboard or saved to disk for later use. Printing from within the program is also supported. To a molecular biologist, the plasmid map is as valuable as a road map is to a world traveler. Plasmid maps are key for identifying all the restriction sites, gene orientations, selective markers, promoters and other genetic miscellany that make it possible to sequence, clone genes, design new vectors or express novel proteins.