Table 3.

Comparison of codon usage among Camelus bactrianus ferus and selected vertebrates

AAa	Codon	Camel	Alpaca	Dog	AA	Codon	Camel	Alpaca	Dog
G	GGC	67	63	51	M	ATA	177	195	201
	GGA	92	91	93		ATG	75	58	47
	GGG	36	30	28	D	GAT	28	31	28
A	GCT	57	52	63		GAC	41	42	41
	GCC	109	103	86	E	GAA	61	66	73
	GCA	88	88	89		GAG	35	28	21
	GCG	12	9	14	N	AAT	59	73	66
V	GTT	46	43	49		AAC	92	71	91
	GTC	49	60	27	Q	CAA	67	78	68
	GTA	80	84	65		CAG	23	15	21
	GTG	33	15	24	K	AAA	77	83	81
L	TTA	97	97	117		AAG	19	18	19
	TTG	32	15	28	R	CGT	7c	6	6
	CTT	72	68	96		CGC	14	16	10
	CTC	97	93	90		CGA	39	39	45
	CTA	227b	279	230		CGG	8	4	4
	CTG	68	46	33	H	CAT	28	28	38
I	ATT	179	167	174		CAC	63	65	57
	ATC	134	151	168	P	CCT	54	43	64
S	TCT	55	54	68		CCC	81	84	62
	TCC	75	69	74		CCA	49	61	60
	TCA	71	80	78		CCG	12	10	7
	TCG	10	8	12	F	TTT	103	122	108
T	ACT	60	70	75		TTC	133	108	127
	ACC	97	89	90	Y	TAT	69	68	69
	ACA	126	142	120		TAC	68	73	74
	ACG	34	19	18	W	TGA	88	90	94
C	TGT	11	9	4		TGG	17	15	10

^a The one-letter code for amino acids (AA) was used;

^b the most frequently used codon;

^c the least frequently used codon.