Table 1. The conservation differences analyzed by SAM for N-terminal 100 residues.

RSD (%)	Total number of residues	Corresponding positions
100	6	1 7 11 14 15 18
90∼100	7	9 10 13 21 22 27 30
80∼90	7	6 12 17 19 20 25 50
70∼80	1	8
60∼70	2	4 23
50∼60	7	3 5 16 24 28 39 68
40∼50	1	33
30∼40	3	32 35 75
20∼30	8	29 36 48 52 66 71 78 96
10∼20	10	2 26 51 58 76 88 91 94 97 99
0∼10	10	46 55 56 59 70 73 83 86 87 98
0	38	31 34 37 38 40 41 42 43 44 45 47 49 53 54 57 60 61
		62 63 64 65 67 69 72 74 77 79 80 81 82 84 85 89 90
		92 93 95 100