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Biochimie > Acides Aminés > Flashcards

Acides Aminés Flashcards

1
Q

Composition d’un AA

A

C alpha tétraédrique asymétrique
Amine
Acide carboxylique
Radical

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2
Q

AA sans C asymétrique

A

Glycine

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3
Q

Série des AA naturels

A

L

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4
Q

Particularité des AA

A

Ions dipolaires
COO -
NH+
Solubles dans l’eau

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5
Q

AA essentiels

A

Valine Val V
Leucine Leu L
Isoleucine Ile l
Threonine Thr T
Lysine Lys K
Arginine Arg R (semi)
Methionine Met M
Phenylalanine Phe F
Histidine His H

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6
Q

Glycine

A

Apolaire
Hydrophobe

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7
Q

Alanine

A

Apolaire

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8
Q

Valine

A

Apolaire

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9
Q

Leucine

A

Apolaire

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10
Q

Isoleucine

A

Apolaire

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11
Q

Serine

A

Polaire non ionisable

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12
Q

Thréonine

A

Polaire ionisable

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13
Q

Acide aspartique

A

Polaire ionisable

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14
Q

Asparagine

A

Polaire bon ionisable

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15
Q

Acide glutamique

A

Polaire ionisable

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16
Q

Glutamine

A

Polaire bon ionisable

17
Q

Lysine

A

Polaire ionisable

18
Q

Arginine

A

Polaire ionisable

19
Q

Cysteine

A

Polaire non ionisable

20
Q

Methionine

A

Apolaire

21
Q

Phenylalanine

A

Aromatique Apolaire

22
Q

Tyrosine

A

Aromatique polaire non ionisable

23
Q

Histidine

A

Polaire ionisable

24
Q

Proline

A

Apolaire

25
Q

Tryptophane

A

Aromatique Apolaire

26
Q

AA phi >7

A

His Lys Arg

27
Q

AA phi = 3

A

Asp Glu

28
Q

Rôles AA

A

Synthèse de protéines + régulation
Synthèse de vitamines ou AA Précurseurs
Métabolisme des AA krebs

29
Q

Rôles AA

A

Synthèse de protéines + régulation
Synthèse de vitamines ou AA Précurseurs
Métabolisme des AA krebs

30
Q

Liaison peptidique

A

Entre COOH et NH2

31
Q

Réactions due au COOH

A

Decarboxylation
Formation du grpmnt amide

32
Q

Réactions due au NH2

A

Desamination :
2 étapes, liberation d’amoniaque
Transamination

33
Q

Modifications sur le radical

A

Glycolysation
Phosphorylation
Acétylation

34
Q

Les 2 types de Glycolysation

A

Nglyco sur NH2 des Asp
O glycol sur OH des Ser

35
Q

Sur quels résidus se passe la Phosphorylation

A

Sur OH des chaînes latérales des résidus Ser Thr et Tyr

36
Q

Acétylation

A

NH2 des Lys

Biochimie (7 decks)

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