Figure 1.

Proposed model for chitin utilization in C. japonicus. CjChi18D (green) and CjLPMO10A (yellow) work together to disrupt the crystalline structure of chitin and degrade less accessible chitin fibers, whereas CjChi18B (magenta) and CjChi18C (brown) are acting on the more accessible chitin fibers to produce chito-oligosaccharides, which are taken up into the periplasm space. CjChi18A (orange) generates GlcNAc, and this lipoprotein may be acting in the periplasmic space (as shown here) or may be located on the outer side of the outer membrane and act outside the cell. IM, inner membrane; OM, outer membrane. Transporter icons (white) and phospholipids (gray) are adapted from Servier Medical Art under a Creative Commons Attribution 3.0 Unported License (https://creativecommons.org/licenses/by/3.0/).