On Thu, 2010-12-09 at 01:09 +0900, Keitaro Yamashita wrote: > When I tried to refine using Refmac5, the output told many vdw > repulsions with symmetry mates
What do you mean by that? I had a similar situation recently, and there are many records in the log file that say something like this INFO: link is found (not be used) dist= 1.531 ideal_dist= 1.500 ch:AA res: 217 GLN at:C .->ch:FF res: 217 GLN at:CA . Note the "not be used" part. AFAIU, these clashes are simply reported but ignored in refinement. Perhaps some keyword like "monitor none" shall turn these warnings off, but other than making your log-files very long it's not a problem. -- "I'd jump in myself, if I weren't so good at whistling." Julian, King of Lemurs