Figure 2
Summary of the trends observed for TTR crystallization by CD in the S1 screen capillaries (Fig. 1) over an 8 week period (2W = 2 weeks; 5W = 5 weeks; 8W = 8 weeks). A schematic capillary is drawn above each of (a) and (b) to indicate the bottom (B) of the capillary, where precipitant enters the system by diffusion, and the top (T). The portion of the capillary where crystals were observed is defined by a dotted line box. For the rod-shaped crystals, estimated volumes are given above each picture. (a) Classical CD crystallogenesis behaviour observed in the 0.2 mm capillary at a protein concentration of 60 mg mL−1. (b) Typical single rod crystals were obtained at the bottom of the capillary at protein concentrations of 20, 30 and 50 mg mL−1. For all cases crystallization occurred only in the first third of the capillary length, leaving more than half of the capillary without crystals. |