5 AA Aromatique

Question 1

-
     COO            _
      |                /    \
     CH- CH2- 
      |                \     /
      NH3.            _

Answer 1

Phénylalanine (Phe, F):

- AA hydrophobe

Question 2

-
      COO           -
       |               /     \
     CH-CH2 -          - OH
       |                \    /
     NH3.             -

Answer 2

Tyrosine (Try,Y):

• groupement phénol (OH) + cycle
• AA polaire

Question 3

-
COO. CH
| /
CH- CH2 - C —— C CH
| || || |
NH3. CH C CH
\ / \ //
NH CH

Answer 3

Tryptophane (Trp, W):

• cycle indole
• partiellement polaire