=0 OH NADP H C-OH H20 H C-OH HO-CH HO-CH 0-（回 F-on H NADPH+H* H C-OH H C-OH H C H C H G-OH G-6-PD H,C-(P H2 C- H, C G-6-P 6-P-G酸内酯 6-P-G酸 NADP+ G-6-PD H HC=0 H C-OH C02 C- OH =0 NADPH+H* H C-OH HC OH HC- OH H C 5-磷酸核酮糖 5-藓酸核糖 CH20- P PO C—OH C—OH HO-CH C—OH C ——— C— H H H H H2 P O C ＝ O C—OH HO-CH C—OH C ——— C— H H H H H2 P COO - C—OH HO-CH C—OH C—OH C— H H H H2 P P C—OH C＝ O C—OH C—OH CH2O— H H H H P C＝ O C—OH C—OH C—OH CH2O— H H H NADP+ NADPH+H+ NADP+ NADPH+H+ CO2 H2O G-6-P 6-P-G酸内酯 6-P-G酸 5-磷酸核酮糖 5-磷酸核糖 G-6-PD G-6-PD