Acides Aminés

Question 1

Glycine

Answer 1

Gly - G

Hydrophobic small, achiral

Question 2

Alanine

Answer 2

Ala - A

Question 3

Valine

Answer 3

Val -V

Question 4

Leucine

Answer 4

Leu - L

Hydrophobic larger

Question 5

Isoleucine

Answer 5

Ile - I

Hydrophobic larger

Question 6

Méthionine

Answer 6

Met - M

Hydrophobic larger, Has sulfur (thioether group)

Question 7

Phenylalanine

Answer 7

Phe - F

(Purely) Hydrophobic, aromatic side chain

Question 8

Tryptophane

Answer 8

Trp - W

Question 9

Proline

Answer 9

Pro - P

Hydrophobic, Closed Ring

Question 10

Serine

Answer 10

Ser - S

Polar, Hydrophilic, Like Alanine with OH

Question 11

Threonine

Answer 11

Thr - T

Question 12

Cystéine

Answer 12

Cys - C

Polar, forms disulfide bonds

Similar to serine but has sulfhydryl (SH) group in place of hydroxyl -> much more reactiv

Question 13

Tyrosine

Answer 13

Tyr - Y

Question 14

Asparagine

Answer 14

Asn - N

Polar derivative fo Aspartate

Contains terminal carboxamide in place of carboxyic acid

Question 15

Glutamine

Answer 15

Gln - Q

Side chain is one methylene group longer than asparagine

Polar derivative of Glutamate, Contains terminal carboxamide in place of carboxylic acid

Question 16

Aspartate

Answer 16

Asp - D

Negatively charged, Same as aspartic acid

Question 17

Glutamate

Answer 17

Glu - E

Negatively charged, Same as glutamic acid

Question 18

Lysine

Answer 18

Lys - K

Postively charged, Capped with primary amino group

Question 19

Arginine

Answer 19

Arg - R

Positively Charged, Capped with guanidinium group

Question 20

Histidine

Answer 20

His - H

Postively charged imidazole group (aromatic ring)

Can be uncharged or charged near neutral pH -> often at enzyme active sites to bind/release H