Figure 6 - full size

Figure 6.
Fig. 6. Stereo diagram showing the superposition of the active site of Cab , P. sativum, and P. purpureum -CAs including zinc, zinc-coordinating residues, and the conserved residues differentiating between cab- and plant-type -CA. A, Cab is shown in yellow; P. sativum -CA is shown in green. The coordinating water molecule in Cab is shown in red. B, Cab is shown in yellow; P. purpureum -CA is shown in blue. The coordinating water molecule in Cab is shown in red.