Data for: Self-assembling viral histones unravel early nucleosome evolution

Data associated with the manuscript, "Self-assembling viral histones unravel early nucleosome evolution". Included are predicted proteomes from cellular organisms and viruses, hidden Markov models (HMMs), the protein sequences for viral histones, histone alignments and phylogenies, a set of chromatin proteins identified in Nucleocytoviricota viruses, Alpha-fold predicted structures of histone quadruplets, expression vector and construct sequences, unedited gel and blot images, and raw microscopy images.