Table 2.

The relative synonymous codon usage in the Salix wilsonii cp genome.

Amino	Codon	Number	RSCU∗	Amino	Codon	Number	RSCU∗
acid				acid
Ala	GCU	614	1.83	Leu	UUA	843	1.82
	GCA	371	1.11		CUU	578	1.25
	GCC	210	0.63		UUG	568	1.23
	GCG	146	0.44		CUA	393	0.85
Asn	AAU	949	1.52		CUC	207	0.45
	AAC	299	0.48		CUG	187	0.4
Asp	GAU	808	1.57	Lys	AAA	972	1.44
	GAC	223	0.43		AAG	374	0.56
Arg	AGA	482	1.87	Met	AUG	622	1
	CGA	355	1.38	Phe	UUU	979	1.29
	CGU	321	1.24		UUC	543	0.71
	AGG	164	0.64	Pro	CCU	424	1.56
	CGG	117	0.45		CCA	307	1.13
	CGC	109	0.42		CCC	202	0.74
Cys	UGU	208	1.37		CCG	157	0.58
	UGC	95	0.63	Ser	UCU	574	1.67
Gln	CAA	669	1.49		AGU	408	1.19
	CAG	228	0.51		UCA	404	1.17
Gly	GGA	706	1.58		UCC	341	0.99
	GGU	554	1.24		UCG	200	0.58
	GGG	333	0.75		AGC	136	0.4
	GGC	194	0.43	Thr	ACU	528	1.59
Glu	GAA	1003	1.48		ACA	413	1.25
	GAG	352	0.52		ACC	248	0.75
His	CAU	471	1.51		ACG	136	0.41
	CAC	151	0.49	Trp	UGG	449	1
Ile	AUU	1091	1.48	Tyr	UAU	782	1.64
	AUA	682	0.92		UAC	174	0.36
	AUC	442	0.6	Val	GUA	532	1.52
					GUU	500	1.43
					GUG	202	0.58
					GUC	169	0.48

Note: ∗ relative synonymous codon usage, RSCU.