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Dear all,
once again a question concerning a slightly complicated case of dm and

The situation:
Within the the asymmetric unit of my crystal there are six copies of the
protomer grouped as three dimers A, B and C. 
I could determine the following symmetry operators:
inter-dimer: A -> B
             B -> C
intra-dimer: A1 -> A2 (from subunit 1 of dimer A to subunit 2 of dimer
             B1 -> B2
             C1 -> C2

All symmetry operators are 2-folds with a transition-component. None of
them falls on a crystallographic axis.

For the symmetry operations A -> B, A -> B and A1 -> A2 I use A as mask,
for B1 -> B2 i use B as mask and for C1 -> C2 C as mask.

The question:
Are these symmetry operations enough to cover the whole symmetry? 
Or do I have to specify the operations A -> C, A1 -> B1, A1 -> B2 ,...

Thanks a lot for any suggestions


Jan Abendroth
Institut fuer Biochemie
Universitaet Koeln
Zuelpicher Strasse 47
D-50674 Koeln

Tel: +49-(0)221 470 6455 (Labor)
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