Figure 1.

The initial clusters of AcnR crystals grown from Crystal Screen condition No. 11: 1 M ammonium phosphate, 0.1 M sodium citrate with a nominal pH of 5.6. (a) Initial plate-like clusters of crystals of roughly 100 µm in the longer dimension grow from small discontinuities at the edges of the drop. Diffraction of one of the plates showed reflections extending to 2 Å Bragg spacing and the presence of more than one crystal. (b) Plate-like cluster of crystals found in the same condition in a different tray growing from a discontinuity of the drop.