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Figure 3.
Figure 3. Interface of the PolγB Homodimer(A) Dimer
interface of PolγB. Left, oriented as in Figure 1B; right,
rotated by 120° around the y axis to show the interface in
domain 2. Red, atoms that become solvent inaccessible upon dimer
formation; yellow, atoms whose accessibility decreases upon
dimer formation; blue, waters that are in van der Waals distance
to both monomers in the dimer; green, metal bound to main chain
carbonyls at the dimer interface. Figure 3A and Figure 5 were
prepared with Grasp ( [32]).(B) 2F[o] − F[c] electron density
map of the metal binding site. The octahedral coordination
sphere of the metal is indicated with dotted lines.(C)
Comparison of the dimerization domain of CheA (blue and red
subunits, PDB code 1B3Q) with domain 2 of PolγB (green and gray
monomers). Helices are shown as cylinders and strands in
ball-and-stick with hydrogen bonds as dotted lines. N and C
termini are indicated.
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