Enzymes du catabolisme des aa Flashcards

1
Q

Alanine aminotransférase

A

alanine -> pyruvate

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2
Q

Sérine déshydratase

A

sérine -> pyruvate

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3
Q

Complexe de clivage de la glycine

A
  • Décarboxylase
  • Transporteur à lipoamide
  • Aminométhyltransférase
  • Dihydrolipoyl déshydrogénase à FAD, NAD+-dépendante

Glycine -> Sérine

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4
Q

L-asparaginase

A

asparagine -> aspartate

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5
Q

Glutamate déshydrogénase

A

glutamate -> a-cétoglutarate

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6
Q

Glutaminase

A

glutamine -> glutamate

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7
Q

arginase

A

arginine -> ornithine

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8
Q

ornithine-d-aminotransférase

A

ornithine -> glutamate-5-semialdéhyde

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9
Q

glutamate-5-semialdéhyde déshydrogénase

A

glutamate-5-semialdéhyde -> glutamate

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10
Q

proline oxydase

A

proline -> pyrroline-5-carboxylate

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11
Q

Méthionine adénosyltransférase

A

methionine -> SAM

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12
Q

Accepteur de méthyl

A

Emlève le méthyl de SAM -> s-adénosylhomocystéine

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13
Q

Cystathionine-B-synthase

A

Homocystéine + Sérine -> Cystathionine + H2O

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14
Q

Cystathionine-y-lyase

A

cystathionine -> a-cétobutyrate + cystéine

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15
Q

acide a-cétonique déshydrogénase

A

a-cétobutyrate + NAD+ + CoASH -> CO2 + NADH + propionyl-CoA

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16
Q

3 enzymes qui convertissent propionyl-CoA en succinyl-CoA

A
  • Propionyl-CoA carboxylase
  • Méthylmalonyl-CoA racémase
  • Méthylmalonyl-CoA mutase