Markup | Genome Research

Table 1.

The Top Five Lineage-Specific Gene Family Expansions in Five Eukaryotes

Rank		Saccharomyces serevisiae		Schizosaccharomyces pombe		Drosophila melanogaster		Caenorhabditis elegans		Arabidopsis thaliana ^b
Rank		LSC name/function	N[i]	LSC name/function	N[i]	LSC name/function	N[i]	LSC name/function	N[i]	LSC name/function	N[i]
1	Uncharacterized Ecm34p-like proteins	25	Wtf family of non-globular proteins	20	Trypsin-like serine proteases	178	7 TM Odorant receptors (two distinct clusters)	264, 228	Plant-specific kinases	316
2	Hexose transporters	15	Mayor Facilitator Superfamily transporter	13	Insect cuticle proteins	88	Uncharacterized proteins containing a nematode-specific domain	182	Plant-specific, F-box containing proteins	251
3	Amino acid permeases	14	Ser/Thr repeat-containing non-globular proteins	11	Cytochrome P450 family hydroxylases	83	Integral membrane O-acetyl/Acyl transferases	151	Extracellular domains often associated with kinases	221
4	Cell wall	11	Alpha-amylases	11	C4DM +	82	7 TM receptors	122	PPR module	194,
	glycoproteins				Zn-finger				proteins (two distinct dusters)	195
5	Cell wall mannoproteins	11	Gal4-like fungal C6 finger	8	POZ-containing transcription factor Odorant receptors	55 55	C-type lectins (secreted proteins)	115	Apoptotic (AP)-ATPases	150

[i] Number of members in the LSC.

[ii] A family of 171 transposons, with mutator elements, was not included.