Upload PDB file.
Upload cif-sf file (optional) - for reindexing of reflection data.
Packing (optional) - check this box to search for the most compact assembly.
Caution! If there are many chains and their grouping is not known beforehand, use this option judiciously, as unexpected results are possible.
If there are known quaternary assemblies among the chains, you may bundle them together using the Grouping option.
Grouping (optional) - force chain grouping for packing analysis.
Use comma to separate chain ID’s (as in the PDB file), and semicolon to separate groups, e.g.
if chains A, B form one dimer, and chains C, D another dimer.