Table 2.

Prediction and observation of MPSS signatures among the 32 tissue samples

Predicted
Observed
Ratio
Count
Avg count
Specific
<300 nt
>300 nt
Overlaps poly(A)
7 5 0.71 470 94 No No No Yes
5 1 0.20 5272 5272 No No Yes No
54 43 0.80 71,543 1664 No Yes No No
56 41 0.73 4147 101 No Yes No Yes
396 379 0.96 4,974,891 13,126 No Yes Yes No
24 21 0.88 41,669 1984 No Yes Yes Yes
1495 117 0.08 12,888 110 Yes No No Yes
39,664 9470 0.24 1,755,764 185 Yes No Yes No
4 2 0.50 277 139 Yes No Yes Yes
70,936 19,289 0.27 11,703,037 607 Yes Yes No No
607 196 0.32 59,769 305 Yes Yes No Yes
32,020 10,186 0.32 14,088,087 1383 Yes Yes Yes No
82 53 0.65 92,829 1751 Yes Yes Yes Yes
145,350
39,803
0.27
32,810,643
824

[i] The column labels are predicted: the number of signatures predicted in this class from transcriptome reconstitution data; observed: the number of predicted signatures actually observed; ratio: the ratio of observed to predicted signatures; count: the cumulative abundance of this class of signature; avg count: the average abundance of this class of signature; specific: signature maps to four transcripts or less (yes), or more than four (no); <300 nt: signature maps within less (yes) or more (no) than 300 nt from the transcript 3′-end; >300 nt: signature maps within more (yes) or less (no) than 300 nt from the transcript 3′-end; overlaps poly(A): signature contains A nucleotides at the 3′-end derived from poly(A) tail. NB: since one signature can map to more than one transcript, the positional classes are not mutually exclusive.