Dear CCP4bbers, My original query was; "I am trying to find a program that enables the user to vary the pitch of the generated output model of dsDNA. I have found several programs that generate a dsDNA .pdb file given an input sequence (random in my case), and a web server that allows 'curvature' analysis of the output DNA (http://hydra.icgeb.trieste.it/dna/<https://exchweb.bcm.tmc.edu/exchweb/bin/redir.asp?URL=http://hydra.icgeb.trieste.it/dna/>). However, I am unable to find a program that allows the pitch of the dsDNA to be varied. I was wondering if such a program exists? And if so, where can it be found?"
Thank you for the prompt replies. I was able to generate B-DNA models of varying pitch. Two of the more versatile tools for manipulating nucleic acid structures are:- i) NAMOT (suggested by William Scott, UCSC); download at http://namot.lanl.gov/<https://exchweb.bcm.tmc.edu/exchweb/bin/redir.asp?URL=http://namot.lanl.gov/> ii) 3DNA (suggested by Nicola Abrescia, Strubi, Oxford); download at http://rutchem.rutgers.edu/~xiangjun/3DNA/<https://exchweb.bcm.tmc.edu/exchweb/bin/redir.asp?URL=http://rutchem.rutgers.edu/%7Exiangjun/3DNA/> Balvinder Dhaliwal. (Baylor College of Medicine, Houston, Tx.)
