PlantTFDB
Plant Transcription Factor Database
v4.0
Previous version: v1.0, v2.0, v3.0
Ananas comosus
ARF Family
Species TF ID Description
Aco008426.1ARF family protein
Aco008955.1ARF family protein
Aco011198.1ARF family protein
Aco011464.1ARF family protein
Aco011886.1ARF family protein
Aco012234.1ARF family protein
Aco012988.1ARF family protein
Aco013950.1ARF family protein
Aco014831.1ARF family protein
Aco017701.1ARF family protein
Aco018061.1ARF family protein
Aco018978.1ARF family protein
Aco020108.1ARF family protein
Aco021382.1ARF family protein
Aco025401.1ARF family protein
Aco029197.1ARF 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