Recombinant Histone H3.3, Human, corresponds to the native histone sequence of mammalian histone H3 variant H3.3 and does not contain any amino acid substitutions or residue analogs. Histone H3.3 is known to be important for gene regulation. Recombinant Histone H3.3, Human consists of the full-length sequence of human Histone H3.3 variant (accession number NM_005324). Recombinant Histone H3.3, Human was generated in E. coli cells and has an observed molecular weight of 15.4 kDa.