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Table 4 Possible relationship between PCV3 groups and key amino acid residues of the ORF2 (capsid) protein

From: Prevalence of porcine circovirus type 3 in pigs in the southeastern Chinese province of Zhejiang

Virus
Group
No. of Sequences Amino acid residues 24, 27, 77 and 150
ARSI ARSL AKSI AKSF VRSI VKSI VKNI LKSI ARTI ARTL
PCV3a 77      2 73 1 1   
PCV3b 44 18         1 25
PCV3c 79 62 2 5 2 1 7     
Total 200 80 2 5 2 3 80 1 1 1 25
  1. The putative ‘signature’ residues of the ORF2 protein (aa 24, 27, 77 and 150) relative to the PCV3 groups (PCV3a, PCV3b and PCV3c) were analyzed based on 200 strains, 38 obtained in this study and 162 downloaded from NCBI GenBank