passages.id: split_1_test_2774_passage
passages.type: progene_text
passages.text: Escherichia coli 3-deoxy-D-manno-octulosonate 8-phosphate ( KDO8-P ) synthase is able to utilize the five - carbon phosphorylated monosaccharide , 2-deoxyribose 5-phosphate ( 2dR5P ) , as an alternate substrate , but not D-ribose 5-phosphate ( R5P ) nor the four carbon analogue D-erythrose 4 - phosphate ( E4P ) .