“…They have also been described for members of the family Cystoviridae —bacteriophages that infect the prokaryote Pseudomonas syringae [ 25 , 26 ]. Members of the Toti- [ 27 , 28 , 29 ], Partiti- [ 30 , 31 ], Megabirna- [ 32 ], Chryso- [ 33 , 34 , 35 ], and Quadriviridae [ 36 , 37 ] families, which infect unicellular and simple eukaryotes, such as fungi, protozoa, but also some plants, also have these capsids. Members of the family Birnaviridae, which infect vertebrates, mollusks, insects, and rotifers, are exceptions, since they lack the T = 1 core of 60 CP dimers [ 38 , 39 ].…”