Much like the cellular genome, viral genomes are compacted in virus particles with small basic molecules to maximize space and be poised for gene expression. Some DNA viruses use cellular histone proteins to compact their genomes whereas others use small basic molecules. Adenoviruses encode their own histone-like protein, called protein VII, that forms a ‘beads on a string’ assembly with the viral genome. We are interested in how adenovirus manipulates host chromatin through protein VII and more broadly how DNA viruses use histones or histone-like proteins for dual function: to compact their genomes and control host genomes.