Table 1

smORF numbers

Chromosomal arm

Euchromatin (bp)

Total number of smORFs

Number of smORFs after filtering for CDSs and transposons

Dm smORFs conserved in Dp

1 (X)

22,422,827

114,896

107,288

584

2L

23,011,544

118,333

111,404

1,010

2R

21,146,708

94,762

87,249

653

3L

24,543,557

119,069

112,256

878

3R

27,905,053

142,593

135,420

1,431

4

1,351,857

3,933

2,937

5

Total

120,377,990

593,586

556,554

4,561

Distribution of putative smORFs across the chromosomal arms of D. melanogaster (Dm), showing the number of smORFs after filtering for coding DNA sequences (CDSs) and transposons, and the number of Dm smORFs conserved in D. pseudoobscura (Dp). The euchromatin content of each chromosomal arm is indicated in nucleotide base pairs.

Ladoukakis et al. Genome Biology 2011 12:R118   doi:10.1186/gb-2011-12-11-r118