PDBio 120 Amino Acids

Question 1

Asparagine

Answer 1

N

polar

Central Carbon: H-C-CH₂-C(O)(NH₂)

Question 2

Histidine

Answer 2

H

basic

Central carbon: H-C-CH₂-5 ring that goes (clockwise from the bond) C-C-NH-C-NH⁺

Question 3

Glycine

Answer 3

G

nonpolar

Central Carbon: H-C-H

Question 4

Valine

Answer 4

V

nonpolar

Central Carbon: H-C-CH(CH₃)₂

Question 5

Methionine

Answer 5

M

nonpolar

Central Carbon: H-C-CH₂-CH₂-S-CH₃

Question 6

Tryosine

Answer 6

Y

polar

Central carbon: H-C-CH₂-6 carbon ring-OH

Question 7

Phenylalanine

Answer 7

F

nonpolar

Central carbon: H-C-CH₂-6 carbon ring

Question 8

Isoleucine

Answer 8

I

nonpolar

Central Carbon: H-C-CH(CH₃)-CH₂-CH₃

Question 9

Aspartic acid

Answer 9

D

acidic

Central carbon: H-C-CH₂-C(O)(O^-)

Question 10

Cysteine

Answer 10

C

polar

Central Carbon: H-C-CH₂-SH

Question 11

Glutamine

Answer 11

Q

polar

Central Carbon: H-C-CH₂-CH₂-C(O)(NH₂)

Question 12

Tryptophan

Answer 12

W

nonpolar

Central Carbon: H-C-CH₂-4 carbon 1 nitrogen ring, 6 carbon ring, H comes off of the nitrogen

Question 13

Leucine

Answer 13

L

nonpolar

Central Carbon: H-C-CH₂-CH(CH₃)₂

Question 14

Lysine

Answer 14

K

basic

Central carbon: H-C-CH₂-CH₂-CH₂-CH₂-NH₃⁺

Question 15

Threonine

Answer 15

T

polar

Central Carbon: H-C-CH(OH)(CH₃)

Question 16

Serine

Answer 16

S

polar

Central Carbon: H-C-CH₂-OH

Question 17

Arginine

Answer 17

R

basic

Central carbon: H-C-CH₂-CH₂-CH₂-NH-C(=NH₂+)(NH₂)

Question 18

Proline

Answer 18

P

nonpolar

Central Carbon: H-C-CH₂-CH₂-CH₂(which shares a hydrogen with the amino group)

Question 19

Alanine

Answer 19

A

nonpolar

Central Carbon: H-C-CH₃

Question 20

glutamic acid

Answer 20

E

acidic

Central carbon: H-C-CH₂-CH₂-C(O)(O^-)