The roles of auxin response factor domains in auxin-responsive transcription

From: Plant Cell | Date: February 1, 2003| Author: | Copyright information

Auxin response factors (ARFs) are transcription factors that bind to TGTCTC auxin response elements in promoters of early auxin response genes. ARFs have a conserved N-terminal DNA binding domain (DBD) and in most cases a conserved C-terminal dimerization domain (CTD). The ARF CTD is related in amino acid sequence to motifs III and IV found in Aux/IAA proteins. Just C terminal to the DBD, ARFs contain a nonconserved region referred to as the middle region (MR), which has been proposed to function as a transcriptional repression or activation domain. Results with transfected protoplasts ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

AUX/IAA proteins are active repressors, and their stability and activity are modulated by auxin
; ...suggested that Aux/IAA proteins function as active...dimerizing with auxin response factors bound...and that early auxin response genes are regulated...stabilities of Aux/ IAA proteins. INTRODUCTION...multimerization of Aux/IAA ...
Aux/IAA Proteins Contain a Potent Transcriptional Repression Domain
; Aux/IAA proteins are short-lived...primary/early auxin response genes in protoplast...result from Aux/IAA proteins dimerizing with auxin response factor (ARF...AuxREs. Most Aux/IAA proteins contain four...20 different ...
Aux/IAA proteins are phosphorylated by phytochrome in vitro
; ...phosphorylation of Aux/IAA proteins is proposed...1986). Primary auxin response genes provide...revealed conserved auxin response elements that...proteins, termed auxin response factors (ARFs...studies suggest Aux/IAA proteins play a ...
Rapid degradation of auxin/indoleacetic acid proteins requires conserved amino acids of domain II and is proteasome dependent
; ...Ill, and IV). Aux/IAA proteins have been postulated...that mediate the auxin response cascade. Initially...proteins called auxin response factors, because...vitro binding of Aux/IAA proteins to DNA has been...importance of Aux/IAA ...
Arabidopsis SGT1b is required for SCF^sup TIR1^-mediated auxin response
; ...degradation of Aux/IAA proteins. INTRODUCTION...regulator of the auxin response pathway (Gray...believed to control auxin response by targeting...degradation of the Aux/IAA proteins, provides strong...targeting of Aux/IAA proteins to ...
A Role for Auxin Response Factor 19 in Auxin and Ethylene Signaling in Arabidopsis1
; Although auxin response factors (ARFs...that bind to the auxin response elements, elucidation...acid proteins (AUX/IAA), thereby facilitating...degradation of AUX/IAA proteins through the ubiquitin-relat...believed to allow auxin response factors ...
AtCAND1, A HEAT-Repeat Protein That Participates in Auxin Signaling in Arabidopsis1
; ...those that encode AUX/IAA proteins (Hagen and Guilfoyle...the binding of auxin response factors (ARFs...al., 1998) to auxin response elements (Dallas...basal state, AUX/IAA proteins sequester ARFs...transcription from auxin response elements. ...
Transcription Factor Networks. Pathways to the Knowledge of Root Development
; ...one finger), ARF (auxin response factor), and Aux/IAA (auxin/indole-3-acetic acid...expression of primary/early auxin response genes (Liscum and...corresponding to the auxin response element found in the...promoter of primary/early auxin response ...
p-Chlorophenoxyisobutyric acid impairs auxin response in Arabidopsis root1
; ...and is widely used to inhibit auxin action, although the mechanism...auxin-signaling pathway by regulating Aux/IAA protein stability and thereby...Abel and Theologis, 1996). Auxin-dependent degradation of Aux/IAA proteins is a key event for early auxin-dependent ...
Arabidopsis SHY2/IAA3 inhibits auxin-regulated gene expression
; ...member of the auxin-induced Aux/IAA family. Gain-of-functi...between light and auxin response pathways. INTRODUCTION...classes of early auxin response genes have been...behaved as primary auxin response genes. Others...genes. Functional auxin ...