TABLE 2.

Codon usage bias and G+C content of the S. enterica pduABCDEGHJKLMNOPQSTUVWX coding regions

ORF	CAIa	% G+C contentb	% G+C content by positionc
			1st	2nd	3rd
pduA	0.297	53	67	41	52
pduB	0.131	60	63	48	70
pduC	0.463	57	61	41	69
pduD	0.372	57	63	42	66
pduE	0.432	56	63	43	63
pduG	0.332	60	71	44	64
pduH	0.280	58	68	42	63
pduJ	0.421	56	69	44	57
pduK	0.309	56	64	48	58
pduL	0.290	60	70	42	69
pduM	0.367	62	73	41	71
pduN	0.213	62	68	50	68
pduO	0.344	62	66	49	69
pduP	0.386	59	59	46	71
pduQ	0.349	60	63	45	73
pduS	0.316	62	70	46	69
pduT	0.302	59	61	43	72
pduU	0.316	56	57	44	67
pduV	0.318	58	57	46	71
pduW	0.276	53	60	41	58
pduX	0.264	56	60	45	63
cob operon		56	63	44	61
Typical gene of S. enterica	0.2–0.8	54	58	44	58

^aThe codon adaptation index (CAI) was determined as described previously (45). 

^bPercent G+C content of the indicated coding sequence. 

^cPercent G+C content of the first, second, or third codon position of the indicated coding sequence.