Molecular function

A molecular function regulator that increases the activity of a transcription regulator via direct binding and/or post-translational modification.

Usage guidance: transcription regulator activators bind to a transcription regulator to allow it to reach the chromatin or to contact other transcriptional regulators. This activity does not occur at the promoter. For activities that do occur at the promoter, consider GO:0001216 ; DNA-binding transcription activator activity or GO:0003713; transcription coactivator activity; those activities respectively bind DNA themselves or positively regulate a transcription regulator when it is located at the chromatin.