Comparative analysis of complete mitochondrial genome sequences confirms independent origins of plant-parasitic nematodes

Table 3 Codon usage of 12 protein coding genes of Bursaphelenchus xylophilus (Bx) and Pratylenchus vulnus (Pv) mtDNAs

Codon	AA	No.		%		Codon	AA	No.		%
		Bx	Pv	Bx	Pv			Bx	Pv	Bx	Pv
TTT	Phe	649	483	19.12	14.49	TAT	Tyr	160	129	4.71	3.87
TTC	Phe	18	38	0.53	1.14	TAC	Tyr	14	24	0.41	0.72
TTA	Leu	459	377	13.52	11.31	TAA	*	0	0	0.00	0.00
TTG	Leu	73	107	2.15	3.21	TAG	*	0	0	0.00	0.00
CTT	Leu	26	46	0.77	1.38	CAT	His	46	45	1.36	1.35
CTC	Leu	2	1	0.06	0.03	CAC	His	0	2	0.00	0.06
CTA	Leu	12	33	0.35	0.99	CAA	Gln	30	30	0.88	0.90
CTG	Leu	0	8	0.00	0.24	CAG	Gln	8	26	0.24	0.78
ATT	Ile	260	188	7.66	5.64	AAT	Asn	146	99	4.30	2.97
ATC	Ile	6	13	0.18	0.39	AAC	Asn	8	5	0.24	0.15
ATA	Met	129	166	3.80	4.98	AAA	Lys	85	67	2.50	2.01
ATG	Met	17	19	0.50	0.57	AAG	Lys	14	33	0.41	0.99
GTT	Val	125	143	3.68	4.29	GAT	Asp	60	55	1.77	1.65
GTC	Val	2	8	0.06	0.24	GAC	Asp	6	5	0.18	0.15
GTA	Val	91	78	2.68	2.34	GAA	Glu	48	54	1.41	1.62
GTG	Val	22	19	0.65	0.57	GAG	Glu	26	35	0.77	1.05
TCT	Ser	85	90	2.50	2.70	TGT	Cys	33	41	0.97	1.23
TCC	Ser	1	13	0.03	0.39	TGC	Cys	1	0	0.03	0.00
TCA	Ser	29	38	0.85	1.14	TGA	Trp	50	59	1.47	1.77
TCG	Ser	3	7	0.09	0.21	TGG	Trp	12	28	0.35	0.84
CCT	Pro	49	41	1.44	1.23	CGT	Arg	25	16	0.74	0.48
CCC	Pro	1	4	0.03	0.12	CGC	Arg	0	1	0.00	0.03
CCA	Pro	16	28	0.47	0.84	CGA	Arg	3	13	0.09	0.39
CCG	Pro	3	4	0.09	0.12	CGG	Arg	3	3	0.09	0.09
ACT	Thr	67	62	1.97	1.86	AGT	Ser	89	86	2.62	2.58
ACC	Thr	0	13	0.00	0.39	AGC	Ser	4	5	0.12	0.15
ACA	Thr	18	30	0.53	0.90	AGA	Ser	103	95	3.03	2.85
ACG	Thr	2	4	0.06	0.12	AGG	Ser	20	35	0.59	1.05
GCT	Ala	61	53	1.80	1.59	GGT	Gly	77	101	2.27	3.03
GCC	Ala	0	7	0.00	0.21	GGC	Gly	3	8	0.09	0.24
GCA	Ala	14	20	0.41	0.60	GGA	Gly	51	58	1.50	1.74
GCG	Ala	5	4	0.15	0.12	GGG	Gly	24	31	0.71	0.93

ISSN: 2730-7182