Transcription factor
= Transcription factor
{wiki}
A <transcription factor> is a <protein> that regulates <transcription>. Combinations of <transcription factors> help select <gene expression> patterns during <cell differentiation>. <Anatomy and Physiology 2e by J. Gordon Betts and others>[Anatomy and Physiology 2e, §3.6, Differentiation and Figure 3.35: transcription factors]{ref}