Table 2.
Average length and incidence of the major polyadenylation signals in mRNAs and filtered ncRNAs in the FANTOM 2 representative transcript set
|
|
Number of representative clones |
Average length (nt) |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
|
pA+
|
pA–
|
Total |
pA+
|
pA–
|
All |
||||
| mRNA | 8646 | 8948 | 17,594 | 2085 | 2210 | 2149 | ||||
| ncRNA | 4111 | 9391 | 13,502 | 1543 | 1914 | 1801 | ||||
| Total
|
12,757
|
18,339
|
31,096
|
|
|
|
||||
-
The designation pA+ indicates the presence of the major polyadenylation signal (AATAAA or ATTAAA) within 30 nt of the 3′-end sequence of the transcript and pA– indicates the absence of this signal. Minor polyadenylation signals were observed in 2567 mRNAs and 2103 ncRNAs, but there was no significant bias in the distribution of these signals between the two sets (Supplemental Table 1).
