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Figure 5.
Figure 5 Structural comparison of the zymogen and activated
form. The upper and lower rows represent images rotated 180°
with respect to each other, to show the channel in the active
form. The electrostatic surface potential maps are shown in the
center. The acidic and basic regions are colored red and blue,
respectively. The arrow denotes a channel that opens on binding
of a Ca^2+ ion in site 3. On the left and right are secondary
structure images of the zymogen and the activated TGase 3 in the
same orientations. The electrostatic potential, including
calcium ions, has been mapped onto the surface plan from -15.0
kT (deep red) to +15.0 kT (deep blue).
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