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enzymes homepage.
corrin biosynthesis (part 5)
corrin biosynthesis (part 7)
corrin salvage pathway
threonine biosynthesis
EC 2.7.1.156 adenosylcobinamide kinase
EC 4.1.1.81 threonine phosphate decarboxylase
EC 6.3.1.10 adenosylcobinamide phosphate synthase