Capsid protein self-assembles to form an icosahedral capsid with a T=1 symmetry, about 20 nm in diameter, and consisting of 60 copies of two size variants of the capsid proteins, VP1 and VP2, which differ by the presence of an N-terminal extension in the minor protein VP1 (PubMed:15289612). The capsid encapsulates the genomic ssDNA (Probable). Binds to erythroid progenitor cells expressing high levels of P antigen and uses host ITGA5-ITGB1 and XRCC5/Ku80 autoantigen as coreceptors on the cell surface to provide virion attachment to target cell (PubMed:12907437, PubMed:8211117, PubMed:16076874). This attachment induces virion internalization predominantly through clathrin-dependent endocytosis (PubMed:22718826). Binding to the host receptors also induces capsid rearrangements leading to surface exposure of VP1 N-terminus, specifically its phospholipase A2-like region (PubMed:17020940). 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 (PubMed:11702787). 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 (PubMed:15289612). Heteromultimer of isoform Minor capsid protein VP1, isoform Minor capsid protein VP2 and isoform Major capsid protein VP3 (PubMed:15289612). 20 fold more abundant than the minor capsid protein VP1 (PubMed:15289612). The N-terminus of Isoform Minor capsid protein VP1, VP1u, contains a phospholipase A2-like region (PubMed:17020940). VP1u is necessary and sufficient for host cell binding and internalization (PubMed:26927158). A nuclear localization signal is present in the C-terminus and can be recognized by cellular nuclear import molecules (PubMed:15289612). After assembly, it is hidden because it is on the inner capsid surface (PubMed:15289612). Minor splicing isoform. Major splicing isoform produced by deletion of the initiating AUG for VP1 and downstream translation of VP2. Belongs to the parvoviridae capsid protein family.