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Figure 4.
Fig. 4. Interaction surfaces of type I- and type II Coh-Doc
complexes. Ribbon representations of type II Doc (green) (a) on
the molecular surface of the type II Coh (blue) and type I Doc
(red) (e) on the molecular surface of type I Coh (yellow) (21).
Representations in b and f have been rotated clockwise 90°
around the x axis, followed by a 180° clockwise rotation
around the z axis. Electrostatic surface potential
representations of C. thermocellum type II Coh (c), C.
thermocellum type II Doc (d), C. thermocellum type I Coh (21)
(g), and C. thermocellum type I Doc (21) (h). Positive regions
are shown in blue and negative regions in red. Residues
contributing to the hydrophobic surface character of C.
thermocellum type II Coh are labeled accordingly. The location
of Ile-118 on the surface of the type II Doc and the analogous
residue in the type I Doc (Lys-18) are identified. The
electrostatic surface potentials were calculated in GRASP (47)
and are contoured from -14 (red) to +14 (blue). Ca^2+ ions are
shown as orange spheres.
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