The server generates external scripts with bond length and angle restraints
for DNA and RNA oligonucleotides,
for the phosphodiester (C-O-PO2-O-C) and monoester (C-O-PO3) groups, and
nitrogenous bases: adenine, guanine, thymine, uracil, cytosine, isocytosine, isoguanine,
submitted as PDB files. The output restraint file
is compatible with Refmac5, SHELXL and phenix.refine.
Please, upload a PDB file.
You may also want to standardize the placement of your macromolecule in the unit cell using ACHESYM