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Figure 2.
a, the reaction product recognition of the minus subsite
observed with F[o] – F[c] electron density map contoured 2.0σ
in the wild-type crystal structure complexed with cellohexaose.
b, the substrate-recognizing residues and four hydrogen bonds
between the reaction product and the wild-type Cel44A molecule
in the crystal structure. c, close up stereoview of the reducing
end pyranose ring. The F[o] – F[c] electron density map is
shown as a gray surface contoured 2.0σ. The map is shown in the
region of 3.0 Å distance around the substrate in a and c.
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