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I was able to solve a structure using molecular replacement. However, only half of the asymmetric unit was found in this solution. There should be two trimers present, one fits very well into the density, and there is a large gap in between "slabs" of the symmetry related trimers. This gap would fit the second trimer, however, the density is spotty at best. I am looking for a way of placing this second trimer, and essentrially completing the solution. The space group is P21212, we believe that the second trimer may be partially twinned. Any suggestions on this issue would be greatly appreciated.
