Dear all, we crystallized a small protein, that gives crystals P2 with cell Cell 53.16 65.73 72.89 90 110.94 90 (has 3 molecules in the asymmetric unit). Tested with pointless. Does not give any other possibility.
The other crystal form of the same protein, similar conditions: C2 Cell 109.14 124.37 73.42 90 111.75 90. This has 6 molecules in the a.s.u. Tested with pointless. Does not give any other possibility. The cell length a, b of C2 is twice that of P2. Is it usual to get such crystals from similar conditions or am I missing something? Many thanks, Mark