Figure 2
From: A unified phylogeny-based nomenclature for histone variants
Unrooted H2B phylogeny. TS H2B.1 (TH2B), H2B.W (H2BFWT) and subH2B (SubH2Bv) are mammal-specific clades. Highly divergent generative cell H2Bs in plants do not form a clear clade. Apicomplexan H2Bv does not appear to be related to trypanosome H2BV, despite the fact that both are thought to interact with H2A.Z.