cycle de Krebs extra Flashcards

1
Q

Ensemble coordonné: cmb de reaction s
Voie
dernière réaction

A

Ensemble coordonné: 8 réactions
* Voie cyclique: dernière réaction régénère Oxaloacétate (substrat
première réaction)

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2
Q

réactions irréversibles:

A
  • 3 réactions irréversibles:
    – Citratesynthase
    – Isocitratedéshydrogénase
    – -cétoglutaratedéshydrogénase
  • 4 réactions d’oxydation : 3 NADH,H+ et 1 FADH2
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3
Q
  • 1 réaction produit directement
A

GTP

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4
Q

réactions d’oxydation :

A
  • 4 réactions d’oxydation : 3 NADH,H+ et 1 FADH2
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5
Q
  • Rôle clé des vitamines et coenzymes:
A

– Thiamine (vitamine B1), FAD( vitamine B2), NAD ( Vitamine B3) – Acidepantothénique(coenzymeA)

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6
Q

complexe pyruvate deshydrogénase
coenzyme

A

3 enzymes 5 Coenzymes: HSCoA (Vit B5), NAD+ (Vit B3), FAD (VitB2), Thiamine pyrophosphate (VitB1), Acide lipoΪque

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7
Q

complexe pyruvate deshydrogénase

enzyme

A

Pyruvate déshydrogenase
* Dihydrolipoyl transacétylase
* Dihydrolipoyl déshydrogenase

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