Transcription repressor that specifically binds the 5'- GGAG[GA]A[GA]A-3' consensus sequence. Represses transcription by recruiting the chromatin multiprotein complex NuRD to target promoters. Negatively regulates expression of EGFR, a gene involved in cell proliferation, survival and migration. Its ability to repress genes of the EGFR pathway suggest it may act as a tumor suppressor. Able to suppress breast carcinogenesis. . [Isoform 4]: Antagonizes the transcription repression by isoform 1 by competing for the binding of the NuRD complex. Does not bind DNA. . This is the function of ZGPAT (zinc finger CCCH-type and G-patch domain containing, Ensembl gene identifier ENSG00000197114).