Table 1.
High frequency motifs present in the HDS S regions.
| Rank | Forward motif | Reverse motif | S region frequency | Adjacent S region frequency |
|---|---|---|---|---|
| 1 | AGCAAGA | TCTTGCT | 100 | 2 |
| 2 | TTCABTGAA | TTCAVTGAA | 80 | 0 |
| 3 | GTDGTT | AACHAC | 139 | 10 |
| 4 | RCCTTT | AAAGGY | 100 | 6 |
| 5 | AAGCTT | AAGCTT | 76 | 4 |
| 6 | AGCAGA | TCTGCT | 49 | 0 |
Forward and reverse motifs refer to the forward 5′ to 3′ sequence and the reverse complementary 5′ to 3′ sequence. In the analysis we arbitrarily used the top 53 DS S regions rather than 52. Sequencekey: B = not A (i.e., C, G, or T); V = not T; D = not C; H = not G; R = A or G; Y = T or C.