fig4

Figure 4. Molecular interactions between B. cellulosilyticus DSM 14838 PRL 2010 and Bi. breve UCC2003 when act on larch wood arabinogalactan. B. cellulosilyticus employs a GH43_24 on its surface to break down the complex polymer into smaller oligosaccharides releasing beta-1,3-galactobiose and beta-1,3-galactotriose and rhamnose into the medium. Bi. breve can use these galactooligosaccharides as carbon source degrading them to galactose using a specific GH2 in its cytoplasm. Galactose is later incorporated into the central catabolism of the cell.