Predicted to enable RNA polymerase II general transcription initiation factor activity and TBP-class protein binding activity. Predicted to be involved in RNA polymerase II preinitiation complex assembly. Predicted to act upstream of or within transcription initiation at RNA polymerase II promoter. Predicted to be located in nucleus. Predicted to be part of transcription factor TFIIA complex. Orthologous to human GTF2A2 (general transcription factor IIA subunit 2).