Modeled E172-173 dimer
structure. (A) The time-dependent Cα–Cα
distances between L196 and I301 in the MD-simulated dimer structure
of E172-173. The letters a and b indicated after the residue numbers
refer to subunits a and b, respectively. (B) The modeled E172-173
dimer structure shown in ribbons (with a and b referring to subunits
a and b, respectively), domain I is shown in red, domain II is shown
in green, and domain III is shown in yellow. (C) Key residues L196
(a/b) and I301 (a/b) shown in ball and sticks on the dimer interface.