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Figure 8.
Figure 8. (a) Superimposition of pullulanase/G4 on
pancreatic a-amylase/acarbose complex. (stereo view). The
protein model and bound sugar moieties are coloured light grey
and blue in pullulanase/G4 and dark grey and orange in
a-amylase/acarbose, respectively. (b) A cartoon showing the
glucose units of oligosaccharides and pullulan and their
position at numbered subsites. G, glucose unit of G4 (blue),
estimated position of pullulan (black) and estimated position of
substrate in a-amylase (red). The arrow in pullan indicates the
a-1,6 linkage. The triangle indicates the catalytic site.
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