Table 2.

Functional classification of housekeeping transcripts

Function	Clusters	Sequences	Sequences/Cluster
Energy metabolism	37	80	2.16
Protein synthesis	51	68	1.33
Unknown conserved	26	28	1.08
Cytoskeletal	7	11	1.57
Transcription machinery	11	11	1.00
Transporters/Storage	5	11	2.20
Nuclear regulation	8	9	1.13
Proteasome machinery	6	7	1.17
Protein modification	5	5	1.00
Lipid, amino acid and carbohydrate metabolism	3	3	1.00
Protein export	3	3	1.00
Detoxication metabolism	3	3	1.00
Immunity	1	2	2.00
Transcription factors	1	1	1.00
Total	167	242