HistoneH2B (108-125) is a peptide fragment of histoneH2B that corresponds to amino acid residues 109-126 of the human histoneH2B sequence. It contains an N-terminal biotinylated lysine followed by a tryptophan linker. HistoneH2B can be modified by addition of an O-linked N-acetylglucosamine (GlcNAc) moiety to the serine residue at position 112, which promotes monoubiquitination of the lysine at position 120.1 Both of these modifications are associated with active transcription. HistoneH2B also has lysine residues at positions 108, 116, and 120 that are subject to acetylation.2References1. Fujiki, R., Hashiba, W., Sekine, H., et al. GlcNAcylation of histoneH2B facilitates its monoubiquitination. Nature 480(7378), 557-560 (2011).2. Portela, A., and Esteller, M. Epigenetic modifications and human disease. Nat. Biotechnol. 28(10), 1057-1068 (2010). HistoneH2B (108-125) is a peptide fragment of histoneH2B that corresponds to amino acid residues 109-126 of the human histoneH2B sequence. It contains an N-terminal biotinylated lysine followed by a tryptophan linker. HistoneH2B can be modified by addition of an O-linked N-acetylglucosamine (GlcNAc) moiety to the serine residue at position 112, which promotes monoubiquitination of the lysine at position 120.1 Both of these modifications are associated with active transcription. HistoneH2B also has lysine residues at positions 108, 116, and 120 that are subject to acetylation.2 References1. Fujiki, R., Hashiba, W., Sekine, H., et al. GlcNAcylation of histoneH2B facilitates its monoubiquitination. Nature 480(7378), 557-560 (2011).2. Portela, A., and Esteller, M. Epigenetic modifications and human disease. Nat. Biotechnol. 28(10), 1057-1068 (2010).