Table 3. Genotype of codons 167, 198 and 200 in the identified Ascaris β-tubulin genes.
| Codon | Genotype | Amino acid | Ascaris β-tubulin genes |
|---|---|---|---|
| 167 | TTC | Phe | All identified Ascaris β-tubulin genes |
| 198 | GAA | Glu |
Alu-bt-A and Asu-bt-A Alu-bt-B and Asu-bt-B Alu-bt-B’ and Asu-bt-B’* Alu-bt-C Alu-bt-D and Asu-bt-D Alu-bt-F and Asu-bt-F Alu-bt-G and Asu-bt-G |
| GAG | Glu |
Asu-bt-C Alu-bt-E and Asu-bt-E |
|
| 200 | TTC | Phe |
Alu-bt-A and Asu-bt-A Alu-bt-B and Asu-bt-B ** Alu-bt-B’ and Asu-bt-B’* Alu-bt-C Alu-bt-E and Asu-bt-E Alu-bt-F and Asu-bt-F Alu-bt-G and Asu-bt-G |
| TTT | Phe |
Alu-bt-B and Asu-bt-B ** Asu-bt-C |
|
| TAT | Tyr | Alu-bt-D and Asu-bt-D |
*: Asu-bt-B’ was sequenced from A. suum worms in this study and showed the same genotypes as Alu-bt-B’. **: A synonymous sequence polymorphism was observed at codon 200 of Alu/Asu-bt-B in both A. lumbricoides and A. suum sequenced in this study (btB-ASV01, btB-ASV03 and btB-ASV13). This polymorphism was not concluded from the published genomes, in which TTC was present in Asu-bt-B and TTT in Alu-bt-B.