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Figure 4.
FIGURE 4. Conformations of the loops at the entrance to the
active site. The loops in GlcCerase occur in a number of
conformations, but only two are shown for clarity, in yellow and
green; these conformations give the most pronounced changes in
the entrance to the active site. Tyr-313, which may play a role
in the catalytic mechanism, is indicated. The catalytic residues
are shown as red sticks.
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