Capsid proteins self-assembles to form an icosahedral capsid with a T=1 symmetry, about 26 nm in diameter, and consisting of 60 copies of three size variants of the capsid proteins, VP1, and VP3, which differ by the presence of an N-terminal extension in the minor protein VP1. The capsid has a channel at the 5-fold axis and there are densities extending the 5-fold axis into the interior of the capsid. The capsid encapsulates the genomic ssDNA (By similarity). Binding to the host receptors also induces capsid rearrangements leading to surface exposure of VP1 N-terminus, specifically its phospholipase A2-like region. The additional N-terminal region of isoform Minor capsid protein VP1, called VP1u, may serve as a lipolytic enzyme to breach the endosomal membrane during entry into host cell and might contribute to virus transport to the nucleus (By similarity). a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) Heteromultimer of isoform Minor capsid protein VP1, isoform Minor capsid protein VP2 and isoform Major capsid protein VP3 (By similarity). Heteromultimer of isoform Minor capsid protein VP1, isoform Minor capsid protein VP2 and isoform Major capsid protein VP3 (By similarity). Homomultimer (By similarity). 10 fold more abundant than the minor capsid proteins VP1 and VP2 (By similarity). Heteromultimer of isoform Minor capsid protein VP1, isoform Minor capsid protein VP2 and isoform Major capsid protein VP3 (By similarity). Slightly detected in the cytoplasm, mainly seen in the nucleus. Slightly detected in the cytoplasm, mainly seen in the nucleus. The VP-encoding mRNA generates the three capsid proteins. Minor capsid protein VP1 and Major capsid protein VP3 initiate at canonical initiation site, whereas Minor capsid protein VP2 initiates at a GCT codon (By similarity). The N-terminus of Isoform Minor capsid protein VP1, VP1u, contains a phospholipase A2-like region (By similarity). VP1u may play a role in the disruption of host tight junctions in the airway tract (By similarity). A nuclear localization signal is present in the C-terminus and can be recognized by cellular nuclear import molecules. After assembly, it is hidden because it is on the inner capsid surface. Belongs to the parvoviridae capsid protein family.