Lecture 3: Amino Acids

Question 1

Answer 1

Glycine (Gly, G)

Hydrophobic

Non-essential

Question 2

Answer 2

Alanine (Ala, A)

Hydrophobic

Non-essential

Question 3

Answer 3

Proline (Pro, P)

Hydrophobic

Non-essential

Question 4

Answer 4

Valine (Val, V)

Hydrophobic

Essential

Question 5

Answer 5

Leucine (Leu, L)

Hydrophobic

Essential

Question 6

Answer 6

Isoleucine (Ile, I)

Hydrophobic

Essential

Question 7

Answer 7

Methionine (Met, M)

Hydrophobic

Essential

Question 8

Answer 8

Phenylalanine (Phe, F)

Hydrophobic

Essential

Question 9

Answer 9

Tryptophan (Trp, W)

Hydrophobic

Essential

Question 10

Answer 10

Serine (Ser, S)

Polar

Non-essential

Question 11

Answer 11

Threonine (Thr, T)

Polar

Essential

Question 12

Answer 12

Tyrosine (Tyr, Y)

Polar

Non-essential

Question 13

Answer 13

Asparagine (Asn, N)

Polar

Non-essential

Question 14

Answer 14

Glutamine (Gln, Q)

Polar

Non-essential

Question 15

Answer 15

Cysteine (Cys, C)

Polar

Non-essential

Question 16

Answer 16

Lysine (Lys, K)

Polar

Essential

Question 17

Answer 17

Arginine (Arg, R)

Polar

Essential

Question 18

Answer 18

Histidine (His, H)

Polar

Essential

Question 19

Answer 19

Aspartate (Asp, D)

Polar

Non-essential

Question 20

Answer 20

Glutamate (Glu, E)

Polar

Non-Essential

Question 21

Typical pKa?

Terminal alpha-carboxyl group

Aspartic acid, Glutamic acid

Answer 21

3. 1
4. 1

Question 22

Typical pKa?

Histidine

Answer 22

6.0

Question 23

Typical pKa?

Terminal alpha-amino group

Answer 23

8.0

Question 24

Typical pKa?

Cysteine

Answer 24

8.3

Question 25

Typical pKa?

Tyrosine

Answer 25

10.9

Question 26

Typical pKa?

Lysine

Answer 26

10.8

Question 27

Typical pKa?

Arginine

Answer 27

12.5