[2] The virions of ACV are non-enveloped and in the shape of hollow cylinders that are formed by a coiling fiber that consists of two intertwining halves of the circular DNA strand inside a capsid.

ACV is also unique in that it appears to lack its own enzymes to aid replication, instead likely using the host cell's replisomes.

[4] Virions of ACV are non-enveloped and in the shape of hollow cylinders approximately 230±10 by 19±1 nanometers (nm) in size.

The cylindrical shape is formed by the coiling of a nucleoprotein filament as a helical spring.

This coil-like structure is itself formed by two intertwining halves of a circular, ssDNA molecule in another helical shape that is covered by capsid proteins.

[1] ACV contains a single molecule of circular, positive-sense, single-stranded DNA ((+)ssDNA) that is 24,893 nucleotides in length.