Table 2.
Nucleotide and amino acid sequence similarity between the 24 new QYYZ-like PRRSVs and the reference strain.
| Amino acids/nucleotides | JXA1 | NADC30 | QYYZ | QYYZ-like (newly) |
|---|---|---|---|---|
| 5'UTR | –/96.8–98.9 | –/91.0–93.1 | –/94.1–95.2 | –/94.1–99.5 |
| Nsp1α | 94.4–99.4/93.0–98.1 | 93.9–96.7/85.6–89.4 | 95.6–97.2/89.6–92.2 | 92.8–98.9/88.7–96.9 |
| Nsp1β | 87.6–95.5/89.3–97.0 | 73.7–75.8/75.7–80.2 | 79.7–82.7/81.5–84.3 | 84.7–95.0/88.3–96.2 |
| Nsp2 | 70.9–96.3/76.0–97.3 | 68.6–88.1/73.6–90.4 | 68.0–87.3/74.7–91.4 | 67.3–92.9/73.4–94.3 |
| Nsp3 | 86.1–99.1/81.3–98.1 | 87.0–96.5/80.6–93.6 | 87.8–98.3/80.9–94.3 | 86.1–99.1/80.1–96.1 |
| Nsp4 | 90.7–100/81.9–98.5 | 89.2–93.1/81.4–93.8 | 91.7–97.5/83.5–95.4 | 90.2–99.0/81.0–97.5 |
| Nsp5 | 87.6–95.9/80.2–97.1 | 86.5–96.5/80.2–94.3 | 87.6–97.1/80.6–95.3 | 86.5–95.3/78.8–94.1 |
| Nsp6 | 93.8–100/85.4–100 | 93.8–100/83.3–97.9 | 93.8–100/83.3–97.9 | 93.8–100/81.2–100 |
| Nsp7α | 87.2–99.3/81.7–98.2 | 91.3–94.0/81.0–93.7 | 86.6–98.0/80.3–94.0 | 85.9–98.0/79.9–86.2 |
| Nsp7β | 71.8–100/77.9–99.1 | 70.9–90.9/77.6–92.7 | 75.5–94.5/78.5–94.5 | 69.1–100/75.8–98.2 |
| Nsp8 | 93.3–100/88.1–98.5 | 91.1–95.6/83.0–94.8 | 93.3–100/88.1–94.1 | 88.9–100/83.7–97.8 |
| Nsp9 | 96.6–99.5/85.4–98.9 | 96.0–98.3/85.3–95.0 | 95.0–98.1/84.4–92.5 | 94.9–99.1/84.3–97.5 |
| Nsp10 | 93.7–99.5/84.5–98.6 | 94.6–97.7/84.8–95.1 | 93.0–99.8/84.6–98.1 | 92.7–99.3/84.1–97.2 |
| Nsp11 | 92.8–98.2/85.9–95.7 | 91.9–96.3/84.0–91.2 | 93.7–97.8/86.1–96.7 | 91.5–96.9/83.3–96.9 |
| Nsp12 | 96.1–100/86.4–98.9 | 92.9–96.1/85.3–90.1 | 93.5–99.4/85.7–97.4 | 92.9–99.4/84.0–98.1 |
| ORF2a | 86.0–90.3/87.8–92.0 | 87.2–88.3/84.2–87.4 | 92.6–96.5/91.7–97.0 | 88.7–94.6/89.0–94.7 |
| ORF2b | 86.5–91.9/91.0–94.6 | 83.8–91.9/88.7–91.4 | 91.9–98.6/94.1–96.4 | 87.8–94.6/90.5–94.6 |
| ORF3 | 83.5–87.5/84.4–89.5 | 78.0–95.9/82.6–86.5 | 85.1–95.3/86.7–95.3 | 83.1–93.3/86.4–93.3 |
| ORF4 | 85.5–96.1/84.7–94.4 | 88.3–91.6/86.0–88.5 | 87.2–96.1/86.2–95.2 | 87.2–94.4/84.5–92.7 |
| ORF5 | 82.1–85.1/83.4–85.4 | 84.1–87.6/82.8–86.7 | 92.0–96.5/91.2–96.0 | 88.6–100/86.4–100 |
| ORF5a | 72.5–78.8/81.0–85.9 | 73.1–80.8/82.4–86.5 | 84.6–98.1/89.7–98.1 | 80.4–98.1/85.0–96.2 |
| ORF6 | 94.3–96.6/89.0–91.2 | 92.0–95.4/88.2–90.9 | 96.0–98.9/92.8–97.5 | 95.4–98.9/90.3–96.4 |
| ORF7 | 87.9–90.3/85.2–89.2 | 88.7–99.2/84.7–95.2 | 90.3–99.2/90.9–96.5 | 87.1–97.6/84.1–95.2 |
| 3'UTR | 81.2–88.9 | 83.6–93.0 | 90.1–96.0 | 83.8–94.5 |
| Whole genome | 84.6–96.1 | 82.3–90.8 | 83.6–93.8 | 87.3–94.7 |
The ORF5 homology results were for 24 newly identified PRRSV strains, and the other regional homology results were for 9 whole-genome sequences.