Fig. 1

The artificial biosynthetic pathway for the production of BTO from arabinose in E. coli. AraA arabinose dehydrogenase, AraB arabinolactonase, AraC arabonate dehydratase, KivD keto acid decarboxylase, YqhD alcohol dehydrogenase, PP pathway, pentose phosphate pathway. Solid line indicates a single step; dotted line indicates multiple steps