The process includes the formation of UDPGlc, which is the precursor in the formation of cellulose, followed by glucose polymerization into the 14 glucan chain and a nascent chain which forms ribbon-like structure of cellulose chains formed by hundreds or even thousands of individual cellulose chains, their extrusion outside the cell, and self-assembly into fibrils (23). In A. xylinum, cellulose synthesis is tightly associated with catabolic processes of oxidation and consumes as much as 10 % of energy derived from catabolic reactions. Production
of bacterial cellulose does not interfere with other anabolic processes, including protein synthesis. A. xylinum follows either pentose phosphate cycle or the Krebs cycle coupled with gluconeogenesis