PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Dichanthelium oligosanthes
ARF Family
Species TF ID Description
Do002127.1ARF family protein
Do002179.1ARF family protein
Do002955.1ARF family protein
Do005020.1ARF family protein
Do007895.1ARF family protein
Do010927.1ARF family protein
Do011705.1ARF family protein
Do013794.1ARF family protein
Do019073.1ARF family protein
Do020524.1ARF family protein
Do023795.1ARF family protein
Do024750.1ARF family protein
ARF Family Introduction

Auxin response factors (ARF) are transcription factors that regulate the expression of auxin response genes. ARFs bind with specificity to TGTCTC auxin response elements (AuxRE) in promoters of these genes and function in combination with Aux/IAA (auxin/indole acetic acid) repressors, which dimerize with ARF activators in an auxin-regulated manner.

Most ARFs consist of an amino-terminal DNA-binding domain (DBD), a middle region that functions as an activation domain (AD) or repression domain (RD), and a carboxy-terminal dimerization domain (CTD). The ARF DBD is classified as a plant-specific B3-type, but requires additional amino-terminal and carboxy-terminal amino acids for efficient in vitro binding to TGTCTC AuxREs.

The ARF ADs and RDs are located just carboxy-terminal to the DBDs and contain biased amino acid sequences. ARF ADs are enriched in glutamine along with serine and leucine residues, while ARF RDs are enriched in serine, proline, leucine and glycine residues.

Guilfoyle TJ, Hagen G.
Auxin response factors.
Curr Opin Plant Biol, 2007. 10(5): p. 453-60.
PMID: 17900969