Mutant His3 gene (amino acid replacement K27R) in the context of a histone gene repeat tandem array.
Wild-type His1 gene in the context of a histone gene repeat tandem array.
Wild-type His2A gene in the context of a histone gene repeat tandem array.
Wild-type His2B gene in the context of a histone gene repeat tandem array.
Wild-type His4 gene in the context of a histone gene repeat tandem array.