Table 3 Frequency (Columns A-C), Dufton's (1997) size/complexity score [29] (Columns D-F) and Trifonov (2004) chronology ranking [30] (Columns G-I) of amino acids of degeneracy greater than one that have major codons. (In [30] there is no ranking for the two-fold part of Ser (Ser2), but its initiation was placed somewhere between Thr and Ile.)
A | B | C | D | E | F | G | H | I |
|---|---|---|---|---|---|---|---|---|
Amino acid | Group | Frequency per 10,000 codons | Amino acid | Group | Size/complexity score | Amino acid | Group | Chronology ranking |
Leu4 | A | 786 | Gly | A | 1 | Gly | A | 3.5 |
Ala | A | 704 | Ala | A | 4.76 | Ala | A | 4 |
Gly | A | 663 | Val | B | 12.28 | Val | B | 6 |
Pro | A | 628 | Ile | A | 16.04 | Asp | B | 6.3 |
Val | B | 598 | Leu4 | A | 16.04 | Ser4 | A | 7.3 |
Thr | A | 526 | Ser2 | B | 17.86 | Pro | A | 7.6 |
Ser4 | A | 500 | Ser4 | A | 17.86 | Leu4 | A | 9.4 |
Asp | B | 479 | Thr | A | 21.62 | Thr | A | 9.9 |
Gln | A | 477 | Pro | A | 31.8 | Ser2 | B | Â |
Ile | A | 433 | Asp | B | 32.72 | Ile | A | 11 |
Phe | B | 365 | Asn | B | 33.72 | Asn | B | 11.3 |
Asn | B | 362 | Gln | A | 37.48 | Gln | A | 11.4 |
Ser2 | B | 326 | Phe | B | 44 | His | B | 13.3 |
Tyr | B | 266 | Tyr | B | 57 | Phe | B | 13.8 |
His | B | 261 | Cys | B | 57.16 | Cys | B | 14.2 |
Cys | B | 227 | His | B | 58.7 | Tyr | B | 15.2 |