ATF7IP (Activating Transcription Factor 7 Interacting Protein) is a recruiter that facilitates the interaction between transcription factors and the general transcription apparatus, thereby modulating transcriptional regulation and chromatin formation. Its function can be both as an activator or a repressor depending on the specific context. ATF7IP mediates MBD1-dependent transcriptional repression, likely by recruiting complexes containing histone methyltransferase activity. It is proposed to be a component of a complex that represses transcription and links DNA methylation to histone H3 lysine 9 trimethylation (H3K9me3).