Hi, I am refining a protein complexed with a modified DNA(cordinates obtained from published structure) with CNS. But I am stuck with the pdb format problem. I followed the tutorial on CNS website and the first step just went wrong when command 'fix_dna_rna' didn't work. I also tried the normal DNA cordinates generated from web server 'make-na', it went on very well. Comparing the two pdb cordinates makes me believe the pdb format does matters. But I still don't know the rules of pdb version and can't find full description from the web. So I ask help here. Any advice (program recommendation or how to change the atom manually) would be very helpful.
best regards, Hongjun yu
