Fig. 3From: Engineering microbial pathways for production of bio-based chemicals from lignocellulosic sugars: current status and perspectivesLink of KDC-dependent non-phosphorylative pathway to central carbon metabolism (CCM). XDH: xylose dehydrogenase; XL: xylulolactonase; XD: xylonate dehydratase; KDC: a-ketoacid decarboxylase; ALR: aldehyde reductase; AlDH: aldehyde dehydrogenase; CoA-AlDH; coenzyme A-acylating aldehyde dehydrogenase; GLR: glyoxylase reductase; PcT: propionyl-CoA transfease; BtkB: butyryl Coa Transferase; PhaB: 3-hydroxybutyryl-CoA reductase; TesB: thioesterase II; MKT: malyl-CoA synthetase, SucD: succinyl-COA reductase; 4hbD: 4 hydroxybutyrate dehydrogenase; Abft-2: 4-hydrobutyrate CoA transferase; AdhE2: bifunctional alaldehyde/alcohol dehydrogenase. Additional details on enzymes and encoding genes are given in Additional file 1: Table S1Back to article page