Claim: HIST1H3B, found in the large histone gene cluster on chromosome 6p22-p21.3, is intronless and encodes a member of the histone (basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in prokaryotes) H3 family.
Evidence: Histones are basic nuclear proteins that are responsible for the nucleosome structure of the chromosomal fiber in eukaryotes.