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Cycle de Krebs.pdf - IBMC

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VI. <strong>Cycle</strong> <strong>de</strong> <strong>Krebs</strong> et Béribéri<br />

‣ paralysie / tremblement mains + pieds, parfois tout le corps<br />

‣ provoqué par carence en vitamine B1 = thiamine<br />

TPP = groupe prosthétique <strong>de</strong> 3 enzymes importants<br />

<strong>Cycle</strong> <strong>de</strong> <strong>Krebs</strong><br />

Voie <strong>de</strong>s<br />

pentoses<br />

• pyruvate déshydrogénase<br />

• α-cétoglutarate déshydrogénase<br />

• transcétolases<br />

Activités enzymatiques faibles<br />

Extrême Orient / riz, faible teneur en vit. B1

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