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Ciclo de Krebs

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*<br />

+ Ca 2+, Mg 2+<br />

malato<br />

fumarato<br />

succinato<br />

Etapas que requerem coenzima<br />

oxidada (NAD+ ou FAD)<br />

Regulação do <strong>Ciclo</strong> <strong>de</strong> <strong>Krebs</strong><br />

*<br />

*<br />

oxaloacetato<br />

piruvato<br />

*<br />

Acetil-CoA<br />

Succinil<br />

CoA<br />

-<br />

(piruvato <strong>de</strong>sidrogenase)<br />

ATP, Acetil-CoA, NADH<br />

- ATP<br />

citrato<br />

(citrato sintase)<br />

cis-aconitato<br />

ATP aumenta o K M da<br />

citrato sintase para acetil-<br />

CoA<br />

isocitrato<br />

- ATP<br />

+<br />

α-cetoglutarato<br />

ADP, Ca2+ (isocitrato<br />

<strong>de</strong>sidrogenase)<br />

(α-cetoglutarato<br />

-<br />

+ Ca<br />

Succinil-CoA<br />

NADH, GTP, ATP<br />

<strong>de</strong>sidrogenase)<br />

2+<br />

*<br />

*

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