Gene rearrangements in gekkonid mitochondrial genomes with shuffling, loss, and reassignment of tRNA genes

BMC Genomics

Table 2 Codon usage at codons for glutamine and glutamic acid

Taxon	Codons for Gln			Codons for Glu			Number of all codons¹
	CAA	CAG	CAA + CAG	GAA	GAG	GAA + GAG
Tropiocolotes tripolitanus	67	13	80	55	18	73	3447
Tropiocolotes steudneri	75	10	85	61	11	72	3436
Uroplatus fimbriatus	64	18	82	55	18	73	3442
Uroplatus ebenaui	65	14	79	42*	31*	73	3441
17 geckos²	69.5	12.0	81.5	58.9	16.8	75.7	3441.0

¹Number of all codons is a sum of all codons that appear in alignable regions of 13 protein-coding genes for each taxon.
²Values for 17 geckos are averaged among these taxa. They include Teratoscincus keyserlingii (accession No. AY753545), Hemidactylus frenatus (GQ245970), Gekko swinhonis (JQ906550), Gekko gecko (AY282753), Gekko vittatus (AB178897), Heteronotia binoei (EF626807), Tarentola mauritanica (EU443255), Coleonyx variegatus (AB114446), Hemitheconyx taylori (AB610503), and Hemitheconyx caudicinctus (AB610502) in addition to 7 taxa listed in Table 1.
*Values with an asterisk mean that relative frequency of codons for CAA vs. CAG, GAA vs. GAG, or CAA + CAG vs. GAA + GAG is significantly (p < 0.05) different from that averaged among 17 geckos.

ISSN: 1471-2164