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

21
Q

Phenylalanine

A

Aromatique Apolaire

22
Q

Tyrosine

A

Aromatique polaire non ionisable

23
Q

Histidine

A

Polaire ionisable

24
Q

Proline

25
Tryptophane
Aromatique Apolaire
26
AA phi >7
His Lys Arg
27
AA phi = 3
Asp Glu
28
Rôles AA
Synthèse de protéines + régulation Synthèse de vitamines ou AA Précurseurs Métabolisme des AA krebs
29
Rôles AA
Synthèse de protéines + régulation Synthèse de vitamines ou AA Précurseurs Métabolisme des AA krebs
30
Liaison peptidique
Entre COOH et NH2
31
Réactions due au COOH
Decarboxylation Formation du grpmnt amide
32
Réactions due au NH2
Desamination : 2 étapes, liberation d’amoniaque Transamination
33
Modifications sur le radical
Glycolysation Phosphorylation Acétylation
34
Les 2 types de Glycolysation
Nglyco sur NH2 des Asp O glycol sur OH des Ser
35
Sur quels résidus se passe la Phosphorylation
Sur OH des chaînes latérales des résidus Ser Thr et Tyr
36
Acétylation
NH2 des Lys