Table 1

Transcript alignments, intron and exon features in plants

Medicago

Lotus#

Arabidopsis

Rice


EST/cDNA total

225,920

150,855

691,516

1,009,754

Mapped to genome^

104,382 (46.2%)

22,144 (14.7%)*

589,254 (85.2%)

916,825 (90.8%)

Transcription unit (TU)/Genes

11,516

3,298

22,518

31,044

MultiEST TU/Genes

8,544 (74.2%)

1,879 (57.0%)

19,857 (88.2%)

26,859 (86.5%)

Average (Median) ESTs/gene

9.8 (4)

6.9 (2)

26.3 (11)

30.1 (10)

Number of Introns

32,860

4,357

97,095

107,162

Average (Median) intron size

472 (218)

458 (215)

171 (101)

438 (164)

Long intron (>1000 nt)

12.7%

10.9%

0.7%

10.7%

Number of internal exons

24,600

2,717

78,911

83,668

Average (Median) internal exon

140 (108)

127 (100)

164 (114)

175 (113)


^ Transcript sequences are required to have >95% identity and >80% coverage to be considered as mapped.

# Lotus data are based on the ESTs aligned to finished TACs (phase 3).

* A total of 48,691 (32.3% of 150,855) transcript sequences can be mapped to Lj TACs in all phases, including phase 1, phase 2 and phase 3.

Wang et al. BMC Plant Biology 2008 8:17   doi:10.1186/1471-2229-8-17

Open Data