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. 2012 Aug 22;13:416. doi: 10.1186/1471-2164-13-416

Table 2.

Comparison of expected and observed di-nucleotide frequencies and di-nucleotide PWM

  1 2 3 4 5
AA
0
0
0
0
14
 
0
0
0
0
11.75
AT
0
0
72
0
10
 
0
0
71.04
0
5.88
AG
32
0
5
0
20
 
30.91
0
5.64
0
30.12
AC
0
0
0
0
4
 
0.46
0
0
0
2.2
TA
0
0
0
45
9
 
0
0
0
46.28
5.47
TT
0
0
1
24
0
 
0
0
1.08
21.53
2.73
TG
25
0
0
4
17
 
25.18
0
0.09
4.31
14.01
TC
0
0
0
1
0
 
0.38
0
0
1.08
1.03
GA
0
76
0
3
0
 
0
75.55
0
3.67
1.09
GT
0
1
1
2
0
 
0
1.14
1.08
1.71
0.55
GG
3
1
0
0
3
 
4.58
1.14
0.09
0.34
2.8
GC
1
0
0
0
1
 
0.07
0
0
0.09
0.21
CA
0
1
0
0
0
 
0
1.13
0
0
0.27
CT
0
0
0
0
0
 
0
0.02
0
0
0.14
CG
18
0
0
0
1
 
17.17
0.02
0
0
0.7
CC
0
0
0
0
0
 
0.26
0
0
0
0.05
AA
-4.62
-5.66
-6.16
-5.81
-0.16
AT
-4.14
-5.18
0.00
-5.33
-0.02
AG
0.00
-5.91
-3.39
-6.06
-0.05
AC
-4.41
-5.45
-5.94
-5.60
-1.20
TA
-4.02
-5.06
-5.55
0.00
0.00
TT
-4.58
-5.62
-4.72
-1.20
-4.17
TG
-0.09
-5.75
-6.24
-3.11
-0.06
TC
-4.69
-5.73
-6.22
-4.48
-4.27
GA
-4.69
0.00
-6.22
-3.38
-4.27
GT
-4.44
-4.08
-4.57
-3.54
-4.02
GG
-2.69
-4.83
-6.72
-6.38
-2.27
GC
-3.70
-6.14
-6.63
-6.29
-3.29
CA
-4.70
-4.34
-6.24
-5.89
-4.28
CT
-4.84
-5.89
-6.38
-6.04
-4.43
CG
-0.47
-5.80
-6.29
-5.95
-2.95
CC
-5.17
-6.22
-6.71
-6.37
-4.76
  AG/TG/CG GA AT TA TA/AT/AG/TG/AA

Optimized di-nucleotide frequency table and PWM. The observed frequencies are provided in the first line for each di-nucleotide, with the following line representing expected di-nucleotide frequencies (calculated from the mono-nucleotide frequencies). The presented are the frequencies of the di-nucleotides from the motifs selected from the interval -7 to 0.