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Figure 3.
Figure 3: GRASP11 surface representation of the dimeric
intimin-Tir IBD complex. The viewing direction is
approximately parallel to the dimerization dyad. Accessible
surfaces colour-coded with electrostatic potential (-15 for red,
+10 for blue) are shown for one intimin (on the left) and one
Tir IBD (in the centre). The other intimin (in blue) and Tir IBD
(in pink) are shown as worm models. Although Tir IBD has an
overall net negative charge (seven net negative charges) the
dimerization interface between the two Tir molecules is
minimally charged. Intimin has a complementary overall positive
charge (six net positive charges) with a positively charged tip
close to the  -helices
of the Tir IBD dimer.
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