FIG 5.
Putative pathway of 2-keto-gluconic acid synthesis in the periplasm of Pseudomonas aureofaciens. The pathway proposed in the present study is enclosed by a dashed line. GDH, d-glucose dehydrogenase; GADH, d-gluconate dehydrogenase; 2KGDH, 2-keto-glucose dehydrogenase.