Table 2. Conserved amino acids on the surface of PCV2.

Sequence alignment of 1278 PCV2 CP amino acid sequences identifies positions that are conserved (more than 99% sequence identity) on the surface of the capsid with the side chains of the amino acid exposed to solvent.

Surface exposed amino acids	51, 53, 55–56, 58–64, 66, 70–71, 73, 75, 77–78, 82–83, 85, 88–89, 112–113, 115, 127–128, 131–138, 144, 166, 168–170, 188–191, 194, 204, 206–208, 210, 227, 229–234
Patch 1	Tyr55, Thr56, Asp70, Met71, Arg73, Asp127
Patch 2	Pro82, Gly83, Gly85:
Patch 3	Asp168, Thr170, Gln188, Thr189