i

Ama_i

U₂

U₁

m₁₂

m₂₃

m_1-3

m_3-1

1

Met

4 (Tyr, His, Asn, Asp)

2 (Trp, Cys)

3 (Lys, Pro, Gly)

1 (Gly)

2

Trp

3 (Met, Val, Leu)

1 (Gly)

3 (Phe, Pro, Gly)

1 (Gly)

3

Phe

4 (Phe, Ile, Val, Leu)

3 (Phe, Ser, Leu)

3 (Phe, Pro, Gly)

2 (Phe, Pro)

4

Tyr

3 (Ile, Val, Leu)

3 (Met, Ile, Thr)

3 (Phe, Pro, Gly)

2 (Phe, Pro)

5

His

4 (Pro, Thr, Ala, Ser)

3 (Met, Ile, Thr)

3 (Phe, Pro, Gly)

2 (Phe, Pro)

6

Asn

3 (Gln, Lys, Glu)

3 (Met, Ile, Thr)

3 (Lys, Pro, Gly)

2 (Phe, Pro)

7

Asp

2 (Gly, Arg)

3 (Met, Ile, Thr)

3 (Lys, Pro, Gly)

2 (Phe, Pro)

8

Cys

3 (Met, Val, Leu)

2 (Val, Ala)

3 (Phe, Pro, Gly)

2 (Phe, Pro)

9

Gln

4 (Pro, Thr, Ala, Ser)

4 (Asn, Lys, Ser, Arg)

3 (Phe, Pro, Gly)

2 (Lys, Gly)

10

Lys

3 (Gln, Lys, Glu)

4 (Asn, Lys, Ser, Arg)

3 (Lys, Pro, Gly)

2 (Lys, Gly)

11

Glu

2 (Gly, Arg)

4 (Asn, Lys, Ser, Arg)

3 (Lys, Pro, Gly)

2 (Lys, Gly)

12

Ile

4 (Tyr, His, Asn, Asp)

4 (Phe, Tyr, Ser, Leu)

3 (Lys, Pro, Gly)

3 (Phe, Lys, Pro)

13

Val

4 (Cys, Gly, Ser, Arg)

6 (Trp, Phe, Tyr, Cys, Ser, Leu)

3 (Lys, Pro, Gly)

4

14

Pro

4 (Pro, Thr, Ala, Ser)

5 (His, Gln, Pro, Leu, Arg)

3 (Phe, Pro, Gly)

4

15

Thr

4 (Tyr, His, Asn, Asp)

5 (His, Gln, Pro, Leu, Arg)

3 (Lys, Pro, Gly)

4

16

Ala

4 (Cys, Gly, Ser, Arg)

5 (His, Gln, Pro, Leu, Arg)

3 (Lys, Pro, Gly)

4

17

Gly

3 (Trp, Gly, Arg)

5 (Asp, Glu, Val, Ala, Gly)

3 (Lys, Pro, Gly)

4

18

Ser

7 (Phe, Gln, Lys, Glu, Ile, Val, Leu)

7 (His, Gln, Val, Pro, Ala, Leu, Arg)

4

4

19

Leu

8 (Phe, Ile, Val, Pro, Thr, Ala, Ser, Leu)

6 (Trp, Phe, Tyr, Cys, Ser, Leu)

3 (Phe, Pro, Gly)

4

20

Arg

7 (Gln, Lys, Glu, Pro, Thr, Ala, Ser)

5 (Asp, Glu, Val, Ala, Gly)

4

4