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Table 3.

Comparison of Codon Usage (Number of Codons) among Zebrafish and Selected Vertebrates

Amino acid	Codon	Zebrafish	Carp	Frog	Human
Lys	AAA[i]	81	73	77	85
	AAG	8	4	8	10
Asn	AAC[i]	65	76	80	131
	AAT	56	45	70	33
Thr	ACA[i]	140	146	145	133
	ACG	13	8	8	10
	ACC	77	104	71	155
	ACT	62	41	83	51
Stop	AGA	0	0	1	0
	AGG	0	0	0	0
Ser	AGC[i]	38	46	42	39
	AGT	14	9	15	14
Met	ATA	139	126	161	167
	ATG[i]	52	49	35	40
Ile	ATC[i]	107	137	110	196
	ATT	201	157	228	125
Gln	CAA[i]	84	98	93	81
	CAG	10	1	6	9
His	CAC[i]	68	79	56	79
	CAT	34	23	40	18
Pro	CCA[i]	114	105	121	52
	CCG	13	12	11	7
	CCC	40	52	20	119
	CCT	40	33	52	41
Arg	CGA[i]	53	45	50	29
	CGG	9	10	1	2
	CGC	4	15	5	25
	CGT	9	9	10	7
Leu	CTA[i]	180	297	141	276
	CTG	29	37	10	45
	CTC	38	97	54	167
	CTT	146	82	159	65
Glu	GAA[i]	80	93	83	64
	GAG	20	8	14	24
Asp	GAC[i]	54	64	38	51
	GAT	30	11	36	15
Ala	GCA[i]	132	129	114	80
	GCG	13	10	6	8
	GCC	96	144	83	124
	GCT	87	55	73	43
Gly	GGA[i]	116	137	113	67
	GGG	45	35	23	34
	GGC	39	44	40	88
	GGT	36	32	44	24
Val	GTA[i]	111	118	75	70
	GTG	22	18	17	18
	GTC	21	30	25	49
	GTT	69	43	62	30
Stop	TAA	7	4	3	2
	TAG	4	1	0	2
Tyr	TAC[i]	57	65	57	89
	TAT	55	50	60	46
Ser	TCA[i]	108	82	123	83
	TCG	9	9	11	7
	TCC	19	57	44	99
	TCT	57	29	66	32
Trp	TGA[i]	107	112	101	93
	TGG	11	8	16	11
Cys	TGC[i]	15	20	18	17
	TGT	14	5	13	5
Leu	TTA[i]	181	100	217	73
	TTG	26	11	20	16
Phe	TTC[i]	88	146	103	141
	TTT	148	76	125	77

[i] Codons for which a tRNA with matching anticodon occurs in mitochondria.