Linked from
The 24 pages that link to Transcription factor, each with the reason it gives.
TranscriptionRelated: These regulators influence whether polymerase initiates at particular genes.
PromoterRelated: Many transcription factors bind promoters and recruit or regulate RNA polymerase.
Gene dosageRelated: Transcription factors can amplify or buffer expression changes caused by dosage.
EpigenomeRelated: Its access to DNA can depend on epigenomic state.