>3MUK_1|Chain A|Bromodomain-containing protein 4|Mus musculus (10090) GAMGSTNPPPPETSNPNKPKRQTNQLQYLLRVVLKTLWKHQFAWPFQQPVDAVKLNLPDYYKIIKTPMDMGTIKKRLENNYYWNAQECIQDFNTMFTNCYIYNKPGDDIVLMAEALEKLFLQKINELPTEE >3MUK_2|Chain B[auth D]|peptide of Histone H3.3|null ATXAARKS