Table 1. General statistics of PHX and PA genes.

Characteristic	BACSU	BACHA	LISIN	LISMO	LACLA	STRPY	STRPN	STAAU	CLOAC	CLOPE
Genome size (kb)	4,215	4,202	3,011	2,945	2,366	1,852	2,161	2,878	3,941	3,031
No. of genes with ≥80 codons	3,795	3,724	2,811	2,732	2,122	1,579	1,788	2,469	3,426	2,504
PHX genes, No.	166	155	251	256	154	109	181	153	299	203
PHX genes, %	4.4	4.2	8.9	9.4	7.3	6.9	10.1	5.7	8.7	8.1
Highest E(g) value*	2.34(fus)	1.79(groEL)	2.40(pfl)	2.49(pfl)	2.46(fus)	2.32(pfl)	2.88(glgP)	2.64(fus)	1.52(rpL5)	2.19(dnaK)
PA genes, No.	179	107	90	101	70	34	65	47	75	29
PA genes, %	4.7	2.9	3.2	3.7	3.3	2.2	3.6	1.9	2.2	1.2

^*The E(g) value is used as a measure of expression level of a gene g; see Methods for details. The gene with the highest E(g) value is also indicated in parentheses. See also Table 2