>6U4A_1|Chains A, B|Bromodomain-containing protein 3|Homo sapiens (9606) QPLGSEVSNPSKPGRKTNQLQYMQNVVVKTLWKHQFAWPFYQPVDAIKLNLPDYHKIIKNPMDMGTIKKRLENNYYWSASECMQDFNTMFTNCYIYNKPTDDIVLMAQALEKIFLQKVAQMPQEEVEL >6U4A_2|Chains C, D|cyclic peptide 3.1_3|synthetic construct (32630) XWWIIPKVKKGCX