Dear Charles, I am assembling a structure of a homopentamer using XPLOR-NIH. There are several ambiguous distance restraints that I would like to implement, but I am not sure if it is possible to group the restraints using "and" and "or" logic. As an example, suppose there is a residue "B" in one monomer that has an NOE contact with either residue "A" or residue "C" of an adjacent monomer. I would like a statement something among the lines of:
assign [((MON1 B) (MON2 A)) AND ((MON2 B) (MON3 A)) AND ... ] OR [((MON1 B) (MON2 C)) AND ((MON2 B) (MON3 C)) AND ... ] Is this something that can be done? Or do I have to specify this for only one protomer and the symmetry restraints will take care of the rest? Thank you, Vitaly
