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Subunit: Binds to and represses JUN and MYB via the leucine zipper regions present in these proteins. Also binds to and represses PPARGC1A: this interaction is abrogated when PPARGC1A is phosphorylated by MAPK1/ERK. Binds to and stimulates transcription by AHR. Binds to KPNA2. Component of the B-WICH complex, at least composed of SMARCA5/SNF2H, BAZ1B/WSTF, SF3B1, DEK, MYO1C, ERCC6, MYBBP1A and DDX21 (By similarity) Sequence caution: Sequence=CAB66530.1; Type=Erroneous initiation;
Function: UniProtKB/Swiss-Prot Summary: MBB1A_HUMAN, Q9BQG0 Function: May activate or repress transcription via interactions with sequence specific DNA-binding proteins. Repression may be mediated at least in part by histone deacetylase activity (HDAC activity) (By similarity)
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