Ciclo das Pentoses
Ciclo das Pentoses
Ciclo das Pentoses
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Via <strong>das</strong> pentoses<br />
‣ Fase oxidativa (ou de síntese) – hexose para pentose<br />
O<br />
P O<br />
O<br />
H C O<br />
H O H<br />
H<br />
OH<br />
H<br />
OH<br />
OH<br />
H OH<br />
NADP +<br />
Glicose-6-fosfato<br />
desidrogenase<br />
2 2<br />
-D-glicose-6-P<br />
O<br />
HO<br />
HO<br />
O<br />
O P<br />
O<br />
OH<br />
OH<br />
OH<br />
O<br />
6-P-D-gliconato<br />
NADP +<br />
6-fosfog liconato<br />
desidrogenase<br />
NADPH + H +<br />
NADPH + H<br />
+<br />
O<br />
P O<br />
O<br />
H C O<br />
H O<br />
H<br />
OH<br />
H<br />
OH<br />
H OH<br />
O<br />
6-P-D-gliconolactona<br />
HO<br />
HO<br />
O<br />
O<br />
O P<br />
OH<br />
O<br />
OH<br />
O<br />
O<br />
3-ceto-6-P-D-gliconato<br />
H 2 O<br />
6-fosfogliconolactonase<br />
6-fosfog liconato<br />
desidrogenase<br />
CO 2<br />
HO<br />
HO<br />
6-P-D-gliconato<br />
O<br />
O<br />
O P<br />
O<br />
HO<br />
O<br />
HO<br />
OH<br />
OH<br />
OH<br />
O O<br />
P<br />
O<br />
O<br />
D-ribulose-5-P<br />
O<br />
OH