Fig. 4
From: Successional action of Bacteroidota and Firmicutes in decomposing straw polymers in a paddy soil
Hypothetical model of the degradation and utilization of plant heteropolymers by Chitinophagales inferred from a reconstructed genome (MAG_bin63). A The number of encoded CAZymes, GHs, CGCs and susCD copies. B Gene cluster diagrams of three representative CGCs. C, Hypothetical model depicting the deconstruction of glucan, xyloglucan and xylan by CAZymes encoded in three CGCs. Polymers are depolymerized by secreted GHs; the oligosaccharide products are transported into periplasm using outer membrane SusCD lipoprotein complexes and hydrolyzed by periplasmic GHs; the periplasmic products are internalized and finally fermented to various products like acetate, propionate and ethanol. The protein cellular locations are based on predicted N-terminus secretion signal peptides. Monosaccharides are represented using the standard Consortium of Functional Glycomics symbols for glycans (galactose, yellow circle; glucose, blue circle; xylose, orange asterisk; fucose, red triangle) [66]. Abbreviations: CGC, CAZymes gene cluster; GH, glycoside hydrolase; susCD, starch utilization system; F6P, fructose 6-phosphate; GPH, glycoside-pentoside-hexuronide transporter; TCA, tricarboxylic acid cycle