4 chn latérale aliphatiques non polaire Flashcards

1
Q
-
         COO
          |
        CH - H
          |
         NH3+
A

Glycine (Gly,G) :

  • plus petit AA
  • chaine latérale peu encombrante
  • seul AA achiral
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2
Q
-
            COO
             |
            CH- CH3
             |
             NH3+
A

Alanine(Ala,A) :

-chaine latérale peu encombrante

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3
Q
-
          COO
           |
          CH - CH2 
          |          \
         NH       CH2
           \        / 
             CH2
A

Proline(Pro, P):

  • seul AA aliphatiques cyclique
  • Hétérocycle -> rigidité, permet formation de coude -> changement de direction de la protéine
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4
Q
-
          COO
           | 
          CH- CH2-CH2-S-CH3
           |
          NH3+
A

Méthionine (Met,M):

  • acide aminé soufré (apolaire)
  • Hydrophobe
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5
Q
-
      COO
       |
      CH-CH- CH3
      |       |
     NH3  CH3
A

Valine:

  • encombrement stérique plus important
  • hydrophobe plus marqué
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6
Q
-
      COO
       |
      CH-  CH2- CH- CH3 
       |                   |
      NH3.            CH3
A

Leucine (Leu, L):

  • encombrement stérique plus important
  • hydrophobe plus marqué
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7
Q
-
       COO
        | 
       CH-  CH-CH2-CH3
        |.      |
      NH3.  CH3
A

Isoleucine (Ile, I) :

  • encombrement plus important
  • hydrophobe plus marqué
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