Histone H2B (Xenopus recombinant)

A nucleosome is the basic repeating unit of chromatin in which 146 base pairs of DNA wrap twice around a histone octamer consisting of two copies of each of the core histones, H2A, H2B, H3, and H4. The combination of two H2A/H2B dimers and one H3/H4 tetramer create the nucleosome core. Histone H2B undergoes many modifications which include acetylation, phosphorylation, ubiquitylation, and sumoylation that are important for regulation of gene transcription.Purity: >70% estimated by SDS-PAGE. Source: Recombinant protein expressed in E. coli. Amino Acids: 1-123 (full-length). MW: 13.7 kDa. Formulation: (Request formulation change), A solution in water (frozen). UniProt Accession #: P02281.