Molecular function

GO:0001224

Binding to a transcription coregulator, a protein involved in regulation of transcription via protein-protein interactions with transcription factors and other transcription regulatory proteins. Cofactors do not bind DNA directly, but rather mediate protein-protein interactions between regulatory transcription factors and the basal transcription machinery.

RNA polymerase II transcription cofactor binding, RNA polymerase II transcription coregulator binding, transcription cofactor binding