>2n3k_B mol:protein length:17 MLV integrase TWRVQRSQNPLKIRLTR >2n3k_A mol:protein length:86 Bromodomain-containing protein 4 GAIAMESEEEDKCKPMSYEEKRQLSLDINKLPGEKLGRVVHIIQSREPSLKNSNPDEIE IDFETLKPSTLRELERYVTSCLRKKTR >2n3k_B mol:protein length:17 MLV integrase TWRVQRSQNPLKIRLTR