Plant Transcription Factor Database
Previous version: v3.0
Ipomoea trifida
ARF Family
Species TF ID Description
Itr_sc000011.1_g00017.1ARF family protein
Itr_sc000018.1_g00098.1ARF family protein
Itr_sc000134.1_g00059.1ARF family protein
Itr_sc000157.1_g00007.1ARF family protein
Itr_sc000202.1_g00007.1ARF family protein
Itr_sc000336.1_g00026.1ARF family protein
Itr_sc000391.1_g00001.1ARF family protein
Itr_sc000509.1_g00012.1ARF family protein
Itr_sc000529.1_g00016.1ARF family protein
Itr_sc000531.1_g00002.1ARF family protein
Itr_sc000745.1_g00001.1ARF family protein
Itr_sc000829.1_g00012.1ARF family protein
Itr_sc000842.1_g00003.1ARF family protein
Itr_sc000904.1_g00005.1ARF family protein
Itr_sc000912.1_g00002.1ARF family protein
Itr_sc001264.1_g00006.1ARF family protein
Itr_sc001479.1_g00001.1ARF family protein
Itr_sc002135.1_g00005.1ARF family protein
Itr_sc002507.1_g00002.1ARF family protein
Itr_sc003230.1_g00002.1ARF family protein
Itr_sc003239.1_g00004.1ARF family protein
Itr_sc004669.1_g00001.1ARF 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