Figure 2 - full size

 

Figure 2.
Figure 2 The structure of the polymerase:terminal protein heterodimer. (A) A ribbon representation, with polymerase colored according to Kamtekar et al, 2004, and terminal protein shown with cylindrical helices. (B) A view of the complex rotated 90° from that shown in (A), with terminal protein shown as cylinders underneath a transparent surface. (C) A C[ ]trace of polymerase from the polymerase:terminal protein complex (in color) superimposed on the apo polymerase structure. Significant differences in conformation occur only in a loop between residues 304 and 314 (shown in magenta in the complex and in black in the apo polymerase structure). The polymerase active site is marked by the space-filling representations of the carboxylates that coordinate the catalytic metal ions. (D) Terminal protein in the same orientation as in (B).

The above figure is reprinted by permission from Macmillan Publishers Ltd: EMBO J (2006, 25, 1335-1343) copyright 2006.