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. 2021 Oct 25;8:730701. doi: 10.3389/fvets.2021.730701

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Copyright © 2021 Zhou, Liang, Si, Li, Chen, Cai, Lv, Wen, Zhai, Zhai, Liao and He.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Amino acid sequence alignment of the polyproteins. The SVA/GD/China/2018 strain had seven different amino acids, including 440A (alanine)—V (valine), 497E (glutamic acid)—K (lysine), 511A (alanine)—V (valine) at the VP3 protein; 1119V (valine)—I (isoleucine) at the 2C protein; 1430A (alanine)—V (valine) at the 3A protein; 1710H (histidine)—Y (tyrosine) at the 3C protein, 1854V (valine)—I (Isoleucine) at the 3D protein. For mutations pertaining to amino acids at position 427K (lysine, VP2 protein), 2104R (arginine, 3D protein) was the same as the first wild boar strain, Sichuan HS-01, in China. The “red frame” indicates the buffalo-origin Seneca Valley virus sequence we isolated, and the “blue frame” indicates the different amino acids compared with other sequences.