3-deoxy-8-phosphooctulonate synthase activity https://github.com/geneontology/go-ontology/issues/30193 phosphoenolpyruvate:D-arabinose-5-phosphate C-(1-carboxyvinyl)transferase (phosphate-hydrolysing, 2-carboxy-2-oxoethyl-forming) KDOP synthase activity 2-dehydro-3-deoxy-D-octonate-8-phosphate D-arabinose-5-phosphate-lyase (pyruvate-phosphorylating) activity KEGG_REACTION:R03254 GO:0008676 3-deoxy-D-manno-octulosonate-8-phosphate synthase activity KDO-8-phosphate synthetase activity 3-deoxy-D-mannooctulosonate-8-phosphate synthetase activity MetaCyc:KDO-8PSYNTH-RXN phospho-2-keto-3-deoxyoctonate aldolase activity 2-dehydro-3-deoxyphosphooctonate aldolase activity KDO-8-P synthase activity molecular_function RHEA:14053 2-dehydro-3-deoxy-phosphooctonate aldolase activity EC:2.5.1.55 2-keto-3-deoxy-8-phosphooctonic synthetase activity 3-deoxyoctulosonic 8-phosphate synthetase activity Catalysis of the reaction: D-arabinose 5-phosphate + H2O + phosphoenolpyruvate = 8-phospho-3-deoxy-D-manno-oct-2-ulosonate + 2 H+ + phosphate. 3-deoxy-D-manno-octulosonic acid 8-phosphate synthetase activity transferase activity, transferring alkyl or aryl (other than methyl) groups