Fig. 1
From: Metabolic engineering of Escherichia coli for de novo biosynthesis of vitamin B12

Biosynthetic pathway of adenosylcobalamin. Endogenous enzymes from E. coli are shown in black. Enzymes from aerobic bacteria such as B. melitensis, R. capsulatus, S. meliloti, and R. palustris are shown in magenta. Enzymes from S. typhimurium are shown in blue. Ado represents the abbreviation of adenosyl