TABLE 2.

Grouping of genes identified in this study into functional categories according to the CMR database^a

Main cellular role	Cellular subrole	In vitro selection		Whole genome
		No.	%	No.	%
Cell envelope	Biosynthesis and degradation of surface polysaccharides and lipopolysaccharides	3	4.00	43	1.44
	Other	16	21.33	74	2.47
Total		19	25.33	170	5.69
Cellular processes	Cell division	1	1.33	18	0.60
	Pathogenesis	4	5.33	58	1.94
	Toxin production and resistance	3	4.00	87	2.91
Total		8	10.67	206	6.89
Hypothetical proteins	Conserved	10	13.33	594	19.87
	Other	3	4.00	403	13.48
Total		13	17.33	997	33.34
Protein fate	Degradation of proteins, peptides, and glycopeptides	3	4.00	46	1.54
	Protein and peptide secretion and trafficking	1	1.33	18	0.60
Total		4	5.33	88	2.94
Transport and binding proteins	Amino acids, peptides, and amines	4	5.33	61	2.04
	Anions and cations	4	5.33	86	2.88
	Carbohydrates, organic alcohols, and acids	3	4.00	38	1.27
	Other	7	9.33	36	1.20
Total		18	24.00	290	9.70
Other Total		13	17.33	1,239	41.44
Grand Total		75	100.00	2,990	100.00

^aGenes were grouped according to the CMR database (TIGRFAM) (20) in comparison to the number of genes and respective percentages in the genome. A small number of genes fit into more than one classification group (compare CMR [http://www.tigr.org/tigr-scripts/CMR2/CMRHomePage.spl]).