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Figure 6.
Figure 6. Comparison of Alternate DNA and N-Subdomain
ConformationsThe conformation of the N subdomain, as monitored
by the position of a helix N, for the NAC mismatch structure
(green) is in an intermediate position relative to the active
closed (blue; Protein Data Bank entry 1BPY) or inactive open
(red; Protein Data Bank entry 1BPX) conformations. These
structures were superimposed using the C subdomains. The
template strand is displaced to a greater extent than that
observed for the open binary DNA complex relative to the closed
ternary complex. The position of a helix N and the template
strand in the open nicked complex (not shown; Protein Data Bank
entry 1BPZ) is identical to that illustrated for the open
complex.
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