Table 1.

The synonymous codon usage pattern in all open reading frames (ORFs) of S. agalactiae.

Amino Acid	Codon	RSCU a
Ala	GCA	1.39
	GCC	0.44
	GCG	0.37
	GCU	1.80
Arg	AGA	1.55
	AGG	0.56
	CGA	0.72
	CGC	0.67
	CGG	0.18
	CGU	2.32
Asn	AAC	0.50
	AAU	1.50
Asp	GAC	0.43
	GAU	1.57
Cys	UGC	0.41
	UGU	1.47
Gln	CAA	1.55
	CAG	0.44
Glu	GAA	1.48
	GAG	0.52
Gly	GGA	1.28
	GGC	0.46
	GGG	0.47
	GGU	1.79
His	CAC	0.53
	CAU	1.46
Ile	AUA	0.55
	AUC	0.61
	AUU	1.84
Leu	CUA	0.73
	CUC	0.35
	CUG	0.25
	CUU	1.22
	UUA	2.45
	UUG	0.98
Lys	AAA	1.52
	AAG	0.48
Phe	UUC	0.45
	UUU	1.56
Pro	CCA	1.80
	CCC	0.32
	CCG	0.32
	CCU	1.55
Ser	AGC	0.57
	AGU	1.43
	UCA	1.76
	UCC	0.32
	UCG	0.32
	UCU	1.61
Thr	ACA	1.59
	ACC	0.48
	ACG	0.41
	ACU	1.52
Tyr	UAC	0.51
	UAU	1.48
Val	GUA	1.12
	GUC	0.51
	GUG	0.44
	GUU	1.92

^a Average value of RSCU in five S. agalactiae genome; underline represented A/U rich-ending compositional constraints.