Systematic sequencing of mRNA from the Antarctic krill (Euphausia superba) and first tissue specific transcriptional signature

Table 4 Classification of the 1,017 krill unique consensus sequences in functional categories.

#	Functional categories	Biological process	# Clusters	% Cluster	# ESTs	% ESTs
1	DNA replication & binding	DNA replication	4	0.79	8	0.45
		DNA binding	4
2	Transcription	Transcription process	2	1.47	16	0.90
		Regulation of transcription	8
		Chromatine assembly and remodelling	5
3	Translation	Translation	70	8.06	363	20.51
		Translation initiation	4
		Translation elongation	7
		Translation termination	1
4	Transport	Electron transport	8	1.97	32	1.81
		Calcium ion transport	2
		Intracellular protein transport	4
		Transport	6
5	Metabolic processes	Amino acid metabolic process	2	4.03	73	4.12
		Carbohydrate metabolic process	13
		Fatty acid biosynthetic process	3
		Various metabolic process	23
6	Proteolysis, protein folding and modification	Proteolysis	16	3.24	48	2.71
		Protein modification and binding	9
		Protein folding	8
7	Striated muscle contraction	Contraction	26	3.54	95	5.37
		Calcium binding	10
8	Signal transduction		8	0.79	9	0.51
9	Structural constituent of cuticle		14	1.38	30	1.69
10	Cell growth, proliferation and adhesion		9	0.88	12	0.68
11	Ion Binding		5	0.49	5	0.28
12	Hypotetical protein		10	0.98	16	0.90
13	Mitochondrial genes		14	1.38	174	9.83
14	Ribosomal RNA gene (18S and 28S)		14	1.38	29	1.64
15	Without similarity		708	69.62	860	48.59
TOTAL			1017	100.00	1770	100.00

The last four columns of the Table show respectively number and percentage of clusters and ESTs belonging to each functional category.

ISSN: 1471-2164