Acides aminés Flashcards

1
Q

Glycine

A

Apolaire, aliphatique, pas de série L ou D, caractère apolaires peu marqué, = glycocolle

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2
Q

Alanine

A

Apolaire, aliphatique

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3
Q

Valine

A

Apolaire, aliphatique, hydrophobicité marquée

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4
Q

Leucine

A

Apolaire, aliphatique, hydrophobicité marquée

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5
Q

Isoleucine

A

Apolaire, aliphatique 2C* 2S,3S

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6
Q

Methionine

A

Apolaire soufré, donneur de méthyle

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7
Q

Proline

A

Apolaire cyclique, contient une amine secndaire et un cycle pyrrolidine

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8
Q

Phénylalanine

A

Apolaire aromatique noyau benzyle 280nm

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9
Q

Tryptophane

A

noyau indole 280nm limite polaire/apolaire

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10
Q

Asparagine

A

polaire non chargé, fonction amide, siège de N-glycolysation

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11
Q

Glutamine

A

Polaire non chargé, fonction amide, à l’état libre, elle joue un rôle important dans le transport et le stockage de l’ammoniac

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12
Q

Serine

A

Polaire non chargé, alcool primaire, siège de modification post-traductionnelles (phosphorylations)

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13
Q

Thréonine

A

Polaire non chargé, 2C* alcool secondaire- siège de modification post-traductionnelles (phosphorylations)

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14
Q

Tyrosine

A

Polaire non chargé 280nm, fonction phénol,

siège de modifications post-traductionnelles (phosphorylations)

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15
Q

Cystéine

A

Polaire non chargé, fonction thiol, seul acide aminé à être 2R - forme des ponts disulfures (pouvant être rompus par le béta-mercaptoéthanol)

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16
Q

Aspartate

A

Polaire chargé, acide, COOH

17
Q

Glutamate

A

Polaire chargé, acide, COOH

18
Q

Lysine

A

Lys K

19
Q

Arginine

A

AA le plus basique, fonction imine —N==C—

20
Q

Histidine

A

Noyau imidazole très réactif qui peut subir une protonation devenant un imidazolium (—NH+)