Table 2.

Summary of large-scale sORF studies in different organisms.

Organism		Genome size (Mbp)	Protein-coding genes	sORFsa	Verifiedb	%c	Source
Prokaryotes	Bacillus subtilis	4	4100	345	180	4	Peptides, 2001. 22(10)
Eukaryotes	Saccharomyces cerevisiae	12	5865	299	247	4	Genome Res, 2003. 13(2);
							Genome Res, 2006. 16(3)
	Arabidopsis thaliana	120	29,157	7159	3241	11	Plant Physiol, 2006. 142(3);
							Genome Res, 2007. 17(5)
	Drosophila melanogaster	180	13,907	4561	401	3	Genome Biol, 2011. 12(11)
	Mus musculus	2500	31,035	1240	1167	4	PLoS Genet, 2006. 2(4)

It describes studies focused on large-scale discovery of SPs in species and their results.

^aNumbers of coding or annotated sORFs (<100 AA);

^bNumbers of sORFs with experimental evidence or known function;

^cThe fraction of verified sORFs relative to previously annotated protein coding genes.