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Figure 1.
Fig. 1. Architecture of the DnaB hexamer. (A) Experimentally
phased and cross-crystal averaged electron density maps of the
four DnaB crystal forms. Shown at the foot of each map is the
high-resolution limit at which each map was calculated. (B)
"Side" view, orthogonal to the ring axis, of a ribbon
representation of the DnaB hexamer. The NTD, CTD, and linker
region are colored blue, red, and yellow respectively. (C) "Top"
view, looking down the ring axis, of the DnaB hexamer. The CTDs
are shown in a surface representation; the NTDs are shown as
ribbons. Those subunits whose NTDs lie on the inner surface of
the ring are colored as in (B), and those on the outer surface
of the ring are colored white. (D) "Side" view of the two
distinct conformations of the DnaB subunits within the hexamer,
colored as in (B). Adjacent CTDs interacting with the linker
region are shown as white surface representations.
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