Table 1.
Comparison of the 3′ end encoding regions between turkey coronavirus (TCoV) and infectious bronchitis virus (IBV) strain Beaudette (GenBank accession number AJ311317)
| Virus | Gene | ORFa size (nucleotides) | TRSb sequence | TRS distancec (nucleotides) |
|---|---|---|---|---|
| TCoV | Spike | 3612 | ctgaacaa | 52 |
| Gene 3 | atgaacaa | 23 | ||
| 3a | 174 | |||
| 3b | 195 | |||
| 3c | 318 | |||
| Membrane | 669 | cttaacaa | 74 | |
| Gene 5 | cttaacaa | 9 | ||
| 5a | 198 | |||
| 5b | 243 | |||
| Nucleocapsid | 1230 | cttaacaa | 93 | |
| IBV | Spike | 3489 | ctgaacaa | 52 |
| Gene 3 | ctgaacaa | 23 | ||
| 3a | 174 | |||
| 3b | 195 | |||
| 3c | 330 | |||
| Membrane | 678 | cttaacaa | 77 | |
| Gene 5 | cttaacaa | 9 | ||
| 5a | 198 | |||
| 5b | 249 | |||
| Nucleocapsid | 1230 | cttaacaa | 93 | |
a
ORF: open reading frame.
b
TRS: transcription-regulating sequence.
c
The distance is calculated as nucleotides between 3′ end of TRS and the ATG start codon of the corresponding first downstream ORF.