Fig. 3
From: Viral histones: pickpocket’s prize or primordial progenitor?
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13072-022-00454-7/MediaObjects/13072_2022_454_Fig3_HTML.png)
Viral histone doublets, triplets, and quadruplets. Configurations of predicted histone fold domain proteins in various viruses and metagenomic viral genomes. Green: H4-like; blue: H3-like; red: H2B-like; yellow: H2A-like; orange: no homology to any known protein