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3-deoxy-8-phosphooctulonate synthase This model describes 3-deoxy-8-phosphooctulonate synthase. Alternate names include 2-dehydro-3-deoxyphosphooctonate aldolase, 3-deoxy-d-manno-octulosonic acid 8-phosphate and KDO-8 phosphate synthetase. It catalyzes the aldol condensation of phosphoenolpyruvate with D-arabinose 5-phosphate: phosphoenolpyruvate + D-arabinose 5-phosphate + H2O = 2-dehydro-3-deoxy-D-octonate 8-phosphate + phosphate In Gram-negative bacteria, this is the first step in the biosynthesis of 3-deoxy-D-manno-octulosonate, part of the oligosaccharide core of lipopolysaccharide. [Cell envelope, Biosynthesis and degradation of surface polysaccharides and lipopolysaccharides]
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