Structural protein required for transport of intracellular particles from the assembly sites to the plasma membrane (By similarity). Binds to both ssDNA and dsDNA (By similarity). Suppressed the activation of the cGAS/STING pathway by interfering with the recruitment of IRF3 to TBK1, which in turn suppresses IRF3 phosphorylation, decreasing interferon production (By similarity). Interacts with the major capsid protein (By similarity). Interacts with host IRF3; this interaction interfers with the recruitment of IRF3 to TBK1 (By similarity). Localizes at the surface of the intracellular virion. Expressed in the late phase of the viral replicative cycle. Acetylated. Belongs to the asfivirus structural protein p14.5 family.