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Figure 3.
Figure 3. Movement of domain A results in the formation of
a tunnel-shaped active site. A, Stereo view of the superposition
of molecule 1 complexed to i-carrageenan oligosaccharides with
molecule 2. Molecules 1 and 2 are shown as blue and brown coils,
respectively. Molecular surface of A. fortis i-carrageenase in
the open conformation (B) and in the substrate-induced tunnel
conformation (C). The surface is colored according to
electrostatic potential, ranging from + (deep blue) to - (red).
The i-carrageenan oligosaccharides are shown as balls and
sticks. Oxygen and sulfur atoms are shown in red and green,
respectively. Carbon atoms are shown in yellow (A) or in white
(C). Figure 3 and Figure 6 were prepared using GRASP. [65.]
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