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Table 4 Codon usages (%) in mitochondrial protein-encoding genes of Protostrongylus rufescens

From: The mitochondrial genome of Protostrongylus rufescens – implications for population and systematic studies

Amino acid Codon Number of codons and percentage (%) of codon usage
   Protostrongylus rufescens Angiostrongylus vasorum Angiostrongylus cantonensis Angiostrongylus costaricensis Aelurostrongylus abstrusus
Non-polar       
Alanine GCN 98 (2.9) 88 (2.5) 75 (1.7) 52 (1.2) 84 (2.5)
Isoleucine ATY 217 (6.3) 226 (6.5) 290 (6.4) 306 (6.8) 242 (7.1)
Leucine CTN 47 (1.4) 23 (0.7) 135 (3.0) 152 (3.4) 66 (1.9)
Leucine TTR 524 (15.5) 566 (16.4) 511 (11.3) 453 (10.1) 514 (14.9)
Methionine ATR 202 (5.9) 148 (4.3) 225 (5.0) 191 (4.2) 103 (3.0)
Phenylalanine TTY 495 (14.4) 461 (13.3) 614 (13.6) 675 (15.0) 548 (15.9)
Proline CCN 71 (2.1) 71 (2.0) 57 (1.3) 35 (0.8) 75 (2.2)
Tryptophan TGR 68 (1.9) 58 (1.7) 181 (4.0) 216 (4.8) 42 (1.2)
Valine GTN 307 (8.9) 368 (10.6) 370 (8.2) 409 (9.1) 345 (10.1)
Polar       
Aspargine AAY 118 (3.4) 92 (2.7) 146 (3.2) 155 (3.4) 98 (2.8)
Cysteine TGY 45 (1.3) 77 (2.2) 156 (3.4) 209 (4.6) 59 (1.7)
Glutamine CAR 39 (1.2) 38 (1.1) 46 (1.0) 32 (0.7) 43 (1.3)
Glycine GGN 196 (5.7) 224 (6.5) 246 (5.4) 237 (5.3) 222 (6.5)
Serine AGN 222 (6.5) 245 (7.1) 238 (5.3) 297 (6.6) 209 (6.1)
Serine TCN 160 (4.7) 136 (3.9) 111 (2.5) 111 (2.4) 153 (4.5)
Threonine ACN 96 (2.8) 77 (2.2) 102 (2.2) 56 (1.2) 80 (2.3)
Tyrosine TAY 189 (5.5) 192 (5.5) 288 (6.4) 241 (5.4) 188 (5.5)
Acidic       
Aspartate GAY 69 (2.0) 70 (2.0) 122 (2.7) 116 (2.6) 75 (2.2)
Glutamate GAR 72 (2.1) 80 (2.3) 105 (2.3) 131 (2.9) 72 (2.1)
Basic       
Arginine CGN 32 (0.9) 161 (4.6) 33 (0.7) 34 (0.7) 100 (2.9)
Histidine CAY 52 (1.5) 53 (1.5) 48 (1.1) 36 (0.8) 55 (1.6)
Lysine AAR 104 (3.3) 93 (2.7) 161 (3.6) 155 (3.4) 93 (2.7)
  1. International Union of Pure and Applied Chemistry (IUPAC) codes (N = A, G, C or T; Y = C or T; R = A or G) were used.