Table I. Most abundant proteins (volume % >0.6) common to four different conditions.

Spot ID	GI	Gene	Synonym	Scorea	Sequence coverage	Molecular weight	pI	CAI	ENcb	COGc	Product
					%
024	30040692	rpsA	S0971	587	47	61,235	4.89	0.781	29.24	J	30 S ribosomal subunit protein S1
029	30043782	mopA	S4564	806	65	57,464	4.85	0.792	27.9	O	Heat shock protein GroEL, chaperone Hsp60, peptide-dependent ATPase
099	30040307	ahpC	S0529	425	78	20,862	5.03	0.796	29.94	O	Alkyl hydroperoxide reductase, C22 subunit
127	30039969	tsf	S0163	296	71	30,518	5.22	0.766	31.95	J	Protein chain elongation factor EF-Ts
128	30040740	ompA	S1023	580	60	37,374	5.65	0.761	31.77	M	Outer membrane protein 3a (II*;G;d)
175	30040931	icdA	S1238	411	62	46,083	5.28	0.564	39.65	C	Isocitrate dehydrogenase
181	30042382	eno	S2988	199	43	45,683	5.32	0.843	27.47	G	Enolase
183	30042997	tufB	S3682	510	76	43,457	5.3	0.789	29.72	J	Protein chain elongation factor EF-Tu
332	30043222	atpA	S3954	570	37	55,416	5.8	0.667	32.42	C	Membrane-bound ATP synthase, F1 sector, α-subunit
465	30039968	rpsB	S0162	374	50	26,812	6.61	0.759	30.42	J	30 S ribosomal subunit protein S2
549	30042978	hupA	S3663	376	77	9,529	9.57	0.654	37.06	L	DNA-binding protein HU-α (HU-2)

^a Score greater than 49 is significant. The detailed information about protein identification is summarized in supplemental Table 2.

^b ENc is the effective number of codons, which is a measure of the extent of codon preference in a gene.

^c The single letter codes represent a particular functional category as follows: J, translation; L, replication, recombination, and repair; M, cell wall/membrane biogenesis; O, post-translational modification, protein turnover, chaperones; C, energy production and conversion; G, carbohydrate transport and metabolism.