glucose-1-phosphate glucose-6-phosphate fructose-6-phosphate (Cori-ester) (Robison-ester) (Neuberg-ester) ^ | | | <-- ATP +----| | | +------| | | | v H_{2}C--OPO_{3}H_{2} | C(OH)--+ | | HO--C--H | fructose-1,6-diphosphate | O (Harden-Young-ester) H--C--OH | | | H--C------+ | H_{2}C--OPO_{3}H_{2} + ADP ^| || O || // CH_{2}OPO_{3}H_{2} || CH | |v | 3-phosphoglycer-aldehyde dihydroxyacetone-phosphate C=O <=============> CHOH (Fischer-ester) | | CH_{2}OH CH_{2}OPO_{3}H_{2} || + coenzyme + H_{3}PO_{4} O=C--OPO_{3}H_{2} | 1,3-diphosphoglyceric acid CHOH + dihydro-coenzyme (Negelein-ester) | CH_{2}OPO_{3}H ^| ADP --> || || O |v// C--OH | +---+ 3-phosphoglyceric acid CHOH + |ATP| (Nilsson-ester) | +---+ CH_{2}OPO_{3}H_{2} ^| |v COOH 2-phosphoglyceric acid | CHOPO_{3}H_{2} |