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Figure 2.
Figure 2. Ribbon Diagrams(A) The colicin E3-IP complex is Y
shaped with dimensions of 75 × 135 × 45 Å.(B)
Close-up of the jellyroll structure of the translocation domain
in the same orientation as in (A). The three β sheets are shown
in red, blue, and yellow. The β strands are numbered
consecutively from the N terminus. The β barrel is flanked by
two α-helical stretches. The second and longer α helix ends
with P315, which causes a kink in the helix and leads directly
into the helical receptor binding domain.(C) Close-up of the
catalytic domain and the IP. The C domain is shown in gray and
the IP in red. Catalytic residues are shown in ball-and-stick.
This orientation shows that the two β sheets are roughly
perpendicular to each other.
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