part of lipopolysaccharide biosynthetic process keto-3-deoxy-D-manno-octulosonic acid biosynthetic process GO:0019294 keto-3-deoxy-D-manno-octulosonic acid anabolism keto-3-deoxy-D-manno-octulosonic acid formation KDO biosynthetic process keto-3-deoxy-D-manno-octulosonic acid biosynthesis The chemical reactions and pathways resulting in the formation of keto-3-deoxy-D-manno-octulosonic acid, an acidic sugar present in lipopolysaccharides of the outer membranes of some Gram-negative bacteria. biological_process KDO biosynthesis keto-3-deoxy-D-manno-octulosonic acid synthesis ketodeoxyoctanoate biosynthetic process MetaCyc:KDOSYN-PWY monosaccharide biosynthetic process carboxylic acid biosynthetic process