Figure 3: (a) Electron micrograph of purified SINV-1 particles. Scale bar represents 200 nm. (b) SINV-1 capsid proteins separated by SDS-PAGE (lane 1) and probed with polyclonal antibodies developed toward a portion of the predicted capsid protein, VP3 (lane 2). (c) Illustration of the intergenic region, IRES, and ORF 2 of SINV-1. Scissile bonds of each capsid protein of ORF 2 as determined by N-terminal sequence analysis of VP1, VP2, and VP3. Cleavage positions (subscript numeral) and amino acid residues about the cleavage site (vertical line) are illustrated.