these results together with data from the literature indicate that a common biosynthetic pathway might exist for the corrinoid biosynthesis in aerobic microorganisms , and in those aerotolerant anaerobes like the propionibacteria , which form the 5,6-dimethylbenzimidazole moiety of vitamin b12 only under aerobic conditions .
C1256766
corrinoid
C0042845
vitamin b12