Essential for the correct assembly and maturation of the core of the virion. Component of the core shell (PubMed:30185597). Binds to phosphatidylserine, which may enable the core shell binding with the inner membrane (PubMed:32519301). Component of the core shell (PubMed:30185597). Binds to phosphatidylserine and DNA, which may link the core shell to the inner membrane and to the viral nucleoid (PubMed:32451720). Component of the core shell. Monomer (PubMed:32519301). Predominantly exists as a monomer, with very little dimers (PubMed:32519301). Homodimerization seems to be linked to low pH (PubMed:32519301). Homodimer; disulfide-linked (PubMed:32451720, PubMed:33629764). Homotrimer; disulfide-linked (PubMed:33629764). Homohexamer (PubMed:32451720). Found in perinuclear cytoplasmic viral factories during assembly. Located in the core shell, which functions like a matrix between the DNA and the inner envelope. Located in the core shell, which functions like a matrix between the DNA and the inner envelope. Located in the core shell, which functions like a matrix between the DNA and the inner envelope. Expressed in the late phase of the viral replicative cycle. Monoubiquitinated in vitro by viral UBCv1. Specific enzymatic cleavages in vivo by the viral pS273R protease yield mature proteins. Belongs to the asfivirus polyprotein pp62 family.