2.7.7.65 diguanylate cyclase P-O bond cleavage - Rhizobium leguminosarum - 3.2.2.5 NAD+ glycohydrolase P-O bond cleavage - Sus scrofa - 4.6.1.12 2-C-methyl-D-erythritol 2,4-cyclodiphosphate synthase P-O bond cleavage - Escherichia coli P62617