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Figure 4.
Fig. 4. a: Interaction of second formamide molecule (CP2)
with Ser207 when the first one (CP1) reaches at the constriction
region. b: Two rotamer conformations, indicated by side chain
torsion angle χ value of Ser207 during the 120 ps trajectory
for four monomers A, B, C and D. Ser207 in monomers A and D
changes their side chain conformation in the trajectory. χ[1]
value near zero corresponds to the conformation of Ser207 when
it interacts to ligand molecule at the region in between the
selectivity filter and the constriction region.
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