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Figure 4.
Figure 4. Binding mode of PL-D2 to tri-N-acetylchitotriose
in the crystal of the PL-D2 complex. Parts of three PL-D2
molecules binding a tri-N-acetylchitotriose molecule (yellow)
are shown: two independent molecules (A, sky-blue; B, green) in
the asymmetric unit, and A' (pink), in the next asymmetric unit,
which is related to A by a crystallographic 2[1]-screw axis. The
tri-N-acetylchitotriose molecule is shared mainly between domain
I of molecule A' and domain II of molecule A, and interacts with
Ser9 of molecule B.
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