Group I

Group II

P1^*

P4^*

P1^*

P4^*

Glutamic acid

49 ± 14^†

28 ± 4

38 ± 11

25 ± 4

Alanine

41 ± 14

89 ± 35

35 ± 2

33 ± 9

Arginine

90 ± 18

98 ± 29

176 ± 110

170 ± 25

Asparagine

11 ± 2

10 ± 2

11 ± 3

13 ± 3

Phenylalanine

18 ± 3

19 ± 2

20 ± 4

20 ± 10

Glycine

94 ± 16

154 ± 41

120 ± 33

184 ± 64

Glutamine

10 ± 3

11 ± 2

20 ± 6

9 ± 1

Histidine

64 ± 12

97 ± 24

130 ± 68

134 ± 29

Isoleucine

9 ± 2

15 ± 6

17 ± 6

19 ± 8

Leucine

16 ± 5

15 ± 4

18 ± 4

88 ± 43

Lysine

40 ± 6

50 ± 7

55 ± 14

49 ± 15

Methionine

10 ± 2

10 ± 2

20 ± 8

10 ± 2

Tyrosine

63 ± 21

104 ± 55

50 ± 14

41 ± 6

Threonine

87 ± 47

55 ± 13

66 ± 21

58 ± 15

Valine

18 ± 4

20 ± 3

30 ± 11

19 ± 4