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Figure 2.
Packing of the MecI --mec and BlaI --mec crystals. (a)
Unit-cell content of the trigonal MecI --mec crystal viewed
along the [110] direction. (b) Another view by 90[deg] rotation
about the c axis. Some molecules are removed and additional
symmetry-related molecules are included to show the virtual
double strands formed by the horizontal DNA segments. (c) BlaI
--mec complexes in the tetragonal crystal (PDB code 1xsd). Acta
Crystallogr Sect F Struct Biol Cryst Commun. 2006 April 1; 62(Pt
4): 320–324. Published online 2006 March 25. doi:
10.1107/S1744309106009742. Copyright [copyright] International
Union of Crystallography 2006
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