Table 2. Ratio between stimulatory and inhibitory motifs in trypanosomatidae and vertebrate genomes.

S/I	L. major	T. cruzi	T. brucei	T. vivax	Mouse	Human
A/C	15.5	12.4	10.5	13.3	1.6	1.4
A/D	10.2	9.9	8.6	13.2	1.6	2.1
B/C	1.5	2.1	2.4	2.5	0.3	0.3
B/D	1.0	1.7	2.0	2.5	0.3	0.4
A- RRCGYY	197597	105362	82685	70098	1490164	1665432
B- HRWCGTTN	18555	17819	18976	13428	309431	347034
C- CCNDDNNGGG	12726	8478	7873	5267	936758	1183790
D- WKKVGGGG	19451	10625	9605	5305	944031	787326

The table shows the S/I ratio that corresponds to (number of stimulatory motif/number of inhibitory motif) calculated for each motif and genome. The number of motifs observed in each genome is reported as in Table 1, A and B corresponding to the stimulatory motifs and C and D to the inhibitory ones. The S/I ratios are significantly higher in trypanosomatidae DNA than in mouse DNA, according to Wilcoxon test (p<0.5).