Definitions for "Transcription factor"
Proteins that bind to DNA and regulate gene expression.
TF) General term for any protein, other than RNA polymerase, required to initiate or regulate transcription in eukaryotic cells. General factors, required for transcription of all genes, participate in formation of the transcription-initiation complex near the start site. Specific factors stimulate (or repress) transcription of particular genes by binding to their regulatory sequences.
A protein that activates initiation of eukaryotic transcription.