Immunogen sequence: LISYYVKRQP AIQKEDQGTI HQLLHQFVPS LFFSQQLDLG ASEESADEDR DSPQGQTTDP SERKKPAPGP HSSPPEEKGA FGDAPATEQP P. Acts as a transcriptional repressor. Interacts with MXI1 to repress MYC responsive genes and antagonize MYC oncogenic activities. In