Table 2.

Housekeeping classes of transcripts found in the cDNA library of Hyalomma marginatum rufipes

Class	Number of Contigs	Number of ESTs	ESTs/Contig	Percent
Protein synthesis machinery	123	262	2.13	44.11
Metabolism, energy	50	64	1.28	10.77
Unknown, conserved	48	61	1.27	10.27
Signal transduction	16	44	2.75	7.41
Protein modification machinery	32	40	1.25	6.73
Transcription machinery	29	36	1.24	6.06
Protein export machinery	17	17	1.00	2.86
Cytoskeletal	10	17	1.70	2.86
Nuclear regulation	10	11	1.10	1.85
Proteasome machinery	9	10	1.11	1.68
Oxidant metabolism/detoxification	5	5	1.00	0.84
Metabolism, amino acid	5	5	1.00	0.84
Transporters/storage	4	4	1.00	0.67
Metabolism, carbohydrate	4	4	1.00	0.67
Metabolism, nucleotide	3	4	1.33	0.67
Metabolism, lipid	4	4	1.00	0.67
Transcription factor	1	2	2.00	0.34
Metabolism, intermediate	2	2	1.00	0.34
Extracellular matrix/cell adhesion	1	1	1.00	0.17
Immunity	1	1	1.00	0.17
Total	374	594