Capsid protein self-assembles to form an icosahedral capsid with a T=1 symmetry, about 22 nm in diameter, and consisting of 60 copies of size variants of the capsid proteins, which differ in the N-terminushe capsid encapsulates the genomic ssDNA. Capsid proteins are responsible for the attachment to host cell receptors. This attachment induces virion internalization predominantly through clathrin-dependent endocytosis (By similarity). The N-terminus of VP1 is sequestered within the mature capsid. It contains a phospholipase A2-like region and putative nuclear localization signals.