Table 2  Mammal-specific GO term enrichment of the four gene classes.
Class  GO code  GO name  1  2  3  4  5  6  7  8  9  10  11  12
TS  GO:0016324  Apical plasma membrane  *  –  –  –  –  –  *  *  *  –  –  –
TS  GO:0005516  Calmodulin binding  *  –  –  *  –  –  –  *  *  –  –  –
TS  GO:0006812  Cation transport  *  –  –  *  –  –  –  *  *  –  –  –
TS  GO:0005856  Cytoskeleton  *  –  –  *  –  –  –  *  *  –  –  –
TS  GO:0005829  Cytosol  *  –  –  –  –  –  *  *  *  –  –  –
TS  GO:0005783  Endoplasmic reticulum  –  –  *  *  –  –  –  *  *  –  –  –
TS  GO:0005887  Integral to plasma membrane  *  –  –  –  *  –  *  *  *  –  *  –
TS  GO:0023034  Intracellular signaling pathway  *  –  –  *  –  –  –  *  *  –  –  –
TS  GO:0005216  Ion channel activity  *  –  *  *  –  –  –  *  *  –  *  –
TS  GO:0008237  Metallopeptidase activity  *  –  –  –  –  –  *  *  *  –  –  –
TS  GO:0042803  Protein homodimerization activity  *  –  –  *  –  –  –  *  *  –  –  –
T  GO:0005576  Extracellular region  –  *  *  *  *  *  *  –  *  –  –  –
S  GO:0030326  Embryonic limb morphogenesis  *  –  –  *  –  –  –  *  *  –  *  –
S  GO:0009954  Proximal/distal pattern formation  *  –  –  *  –  –  –  *  *  *  *  –
S  GO:0030528  Transcription regulator activity  *  –  *  *  *  *  *  *  *  –  *  –
N  GO:0009952  Anterior/posterior pattern formation  *  *  *  *  *  *  *  *  *  *  –  –
N  GO:0048706  Embryonic skeletal system development  –  *  *  –  –  *  *  –  –  *  –  –
N  GO:0048704  Embryonic skeletal system morphogenesis  –  –  *  *  –  *  *  –  *  –  *  –
N  GO:0005576  Extracellular region  *  *  *  –  *  *  *  *  *  *  –  –
N  GO:0005179  Hormone activity  *  *  *  –  –  *  *  –  –  *  –  –
N  GO:0030528  Transcription regulator activity  *  –  *  *  *  *  *  *  *  –  *  –
Notes: The species codes are the same as what listed in Table 1. The asterisks indicate enrichment of GO terms.