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Figure 7.
FIG. 7. Schematic of xylan hydrolysis by the xylan
degrading enzymes of C. japonicus. The structures shown for
CjXyn11A and CjXyn11B are representative bacterial GH11 enzymes
from Bacillus agaradhaerens and Nonomuraea flexuosa,
respectively, the structure shown for CjAbf51A is from
Geobacillus stearothermophilus, and the structure shown for
CjXyn10D is of the homologous (93% similar) enzyme CmXyn10B from
C. mixtus. The enzymes CjAbf51A, CjGlcA67A, and CjXyn10C are all
attached to the outer membrane of the bacterium, whereas
CjXyn10A, CjXyn11A, and CjXyn11B are secreted into the culture
medium (40, 42, 43). The sugar side chains released by the  -glucuronidase and
arabinofuranosidase, respectively, are likely to be transported
into the cytoplasm of C. japonicus. (The depiction of the plant
cell wall is reproduced from Carpita and Gieaut (44). Reproduced
with permission from Blackwell Publishing, ©1993.)
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