Mass	Possible Substitutions
-129	Trp->Gly
-115	Trp->Ala
-106	Tyr->Gly
- 99	Arg->Gly, Trp->Ser
- 92	Tyr->Ala
- 90	Phe->Gly
- 89	Trp->Pro
- 87	Trp->Val
- 85	Arg->Ala, Trp->Thr
- 83	Trp->Cys
- 80	His->Gly
- 76	Tyr->Ser, Phe->Ala
- 74	Met->Gly
- 73	Trp->Ile/Leu
- 72	Trp->Asn, Glu->Gly
- 71	Lys/Gln->Gly, Trp->Asp
- 69	Arg->Ser
- 66	Tyr->Pro, His->Ala
- 64	Tyr->Val
- 62	Tyr->Thr
- 60	Phe->Ser, Met->Ala, Tyr->Cys
- 59	Arg->Pro
- 58	Glu->Ala, Asp->Gly, Trp->Lys/Gln
- 57	Lys/Gln->Ala, Asn->Gly, Arg->Val, Trp->Glu
- 56	Ile/Leu->Gly
- 55	Arg->Thr, Trp->Met
- 53	Arg->Cys
- 50	Phe->Pro, His->Ser, Tyr->Ile/Leu
- 49	Tyr->Asn, Trp->His
- 48	Phe->Val, Tyr->Asp
- 46	Phe->Thr, Cys->Gly
- 44	Met->Ser, Asp->Ala, Thr->Gly, Phe->Cys
- 43	Asn->Ala, Arg->Ile/Leu
- 42	Val->Gly, Ile/Leu->Ala, Glu->Ser, Arg->Asn
- 41	Lys/Gln->Ser, Arg->Asp
- 40	Pro->Gly, His->Pro
- 39	Trp->Phe
- 38	His->Val
- 36	His->Thr
- 35	Tyr->Lys/Gln
- 34	Met->Pro, His->Cys, Phe->Ile/Leu, Tyr->Glu
- 33	Phe->Asn
- 32	Cys->Ala, Glu->Pro, Met->Val, Phe->Asp, Tyr->Met
- 31	Lys/Gln->Pro
- 30	Ser->Gly, Thr->Ala, Glu->Val, Met->Thr, Trp->Arg
- 29	Lys/Gln->Val
- 28	Val->Ala, Asp->Ser, Glu->Thr, Met->Cys, Arg->Lys/Gln
- 27	Asn->Ser, Lys/Gln->Thr, Arg->Glu
- 26	Pro->Ala, Ile/Leu->Ser, Glu->Cys, Tyr->His
- 25	Lys/Gln->Cys, Arg->Met
- 24	His->Ile/Leu
- 23	His->Asn, Trp->Tyr
- 22	His->Asp
- 19	Phe->Lys/Gln, Arg->His
- 18	Asp->Pro, Met->Ile/Leu, Phe->Glu
- 17	Asn->Pro, Met->Asn
- 16	Ser->Ala, Cys->Ser, Ile/Leu->Pro, Asp->Val, Glu->Ile/Leu, Met->Asp, Phe->Met, Tyr->Phe
- 15	Asn->Val, Lys/Gln->Ile/Leu, Glu->Asn
- 14	Ala->Gly, Thr->Ser, Ile/Leu->Val, Asp->Thr, Glu->Asp, Lys/Gln->Asn
- 13	Asn->Thr, Lys/Gln->Asp
- 12	Val->Ser, Ile/Leu->Thr, Asp->Cys
- 11	Asn->Cys
- 10	Pro->Ser, Ile/Leu->Cys, Phe->His
- 9	His->Lys/Gln, Arg->Phe
- 8	His->Glu
- 7	Tyr->Arg
- 6	Cys->Pro, His->Met
- 4	Thr->Pro, Cys->Val
- 3	Met->Lys/Gln
- 2	Val->Pro, Thr->Val, Cys->Thr, Asp->Ile/Leu, Met->Glu
- 1	Asn->Ile/Leu, Asp->Asn, Glu->Lys/Gln
1	Ile/Leu->Asn, Asn->Asp, Lys/Gln->Glu
2	Pro->Val, Val->Thr, Thr->Cys, Ile/Leu->Asp, Glu->Met
3	Lys/Gln->Met
4	Pro->Thr, Val->Cys
6	Pro->Cys, Met->His
7	Arg->Tyr
8	Glu->His
9	Lys/Gln->His, Phe->Arg
10	Ser->Pro, Cys->Ile/Leu, His->Phe
11	Cys->Asn
12	Ser->Val, Thr->Ile/Leu, Cys->Asp
13	Thr->Asn, Asp->Lys/Gln
14	Gly->Ala, Ser->Thr, Val->Ile/Leu, Thr->Asp, Asn->Lys/Gln, Asp->Glu
15	Val->Asn, Ile/Leu->Lys/Gln, Asn->Glu
16	Ala->Ser, Ser->Cys, Pro->Ile/Leu, Val->Asp, Ile/Leu->Glu, Asp->Met, Met->Phe, Phe->Tyr
17	Pro->Asn, Asn->Met
18	Pro->Asp, Ile/Leu->Met, Glu->Phe
19	Lys/Gln->Phe, His->Arg
22	Asp->His
23	Asn->His, Tyr->Trp
24	Ile/Leu->His
25	Cys->Lys/Gln, Met->Arg
26	Ala->Pro, Ser->Ile/Leu, Cys->Glu, His->Tyr
27	Ser->Asn, Thr->Lys/Gln, Glu->Arg
28	Ala->Val, Ser->Asp, Thr->Glu, Cys->Met, Lys/Gln->Arg
29	Val->Lys/Gln
30	Gly->Ser, Ala->Thr, Val->Glu, Thr->Met, Arg->Trp
31	Pro->Lys/Gln
32	Ala->Cys, Pro->Glu, Val->Met, Asp->Phe, Met->Tyr
33	Asn->Phe
34	Pro->Met, Cys->His, Ile/Leu->Phe, Glu->Tyr
35	Lys/Gln->Tyr
36	Thr->His
38	Val->His
39	Phe->Trp
40	Gly->Pro, Pro->His
41	Ser->Lys/Gln, Asp->Arg
42	Gly->Val, Ala->Ile/Leu, Ser->Glu, Asn->Arg
43	Ala->Asn, Ile/Leu->Arg
44	Gly->Thr, Ala->Asp, Ser->Met, Cys->Phe
46	Gly->Cys, Thr->Phe
48	Val->Phe, Asp->Tyr
49	Asn->Tyr, His->Trp
50	Ser->His, Pro->Phe, Ile/Leu->Tyr
53	Cys->Arg
55	Thr->Arg, Met->Trp
56	Gly->Ile/Leu
57	Gly->Asn, Ala->Lys/Gln, Val->Arg, Glu->Trp
58	Gly->Asp, Ala->Glu, Lys/Gln->Trp
59	Pro->Arg
60	Ala->Met, Ser->Phe, Cys->Tyr
62	Thr->Tyr
64	Val->Tyr
66	Ala->His, Pro->Tyr
69	Ser->Arg
71	Gly->Lys/Gln, Asp->Trp
72	Gly->Glu, Asn->Trp
73	Ile/Leu->Trp
74	Gly->Met
76	Ala->Phe, Ser->Tyr
80	Gly->His
83	Cys->Trp
85	Ala->Arg, Thr->Trp
87	Val->Trp
89	Pro->Trp
90	Gly->Phe
92	Ala->Tyr
99	Gly->Arg, Ser->Trp
106	Gly->Tyr
115	Ala->Trp
129	Gly->Trp