Getting a grasp on domain III/IV responsible for Auxin Response Factor-IAA protein interactions

被引：113

作者：

Guilfoyle, Tom J. ^{[1
]}

Hagen, Gretchen ^{[1
]}

机构：

[1] Univ Missouri, Dept Biochem, Columbia, MO 65211 USA

来源：

PLANT SCIENCE | 2012年 / 190卷

关键词：

Auxin; ARF; IAA protein; Domain III/IV; beta-Grasp fold; PB1; domain; VIRUS REPLICASE PROTEIN; AUX/IAA PROTEIN; TRANSCRIPTION FACTOR; GENE-EXPRESSION; REPRESSION; ARF; ENCODES; FAMILY; SPECIFICATION; MONOPTEROS;

D O I：

10.1016/j.plantsci.2012.04.003

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Auxin Response Factors (ARFs) and Indole Acetic Acid (IAA) proteins contain a similar carboxyl-terminal domain (domain III/IV) that facilitates interactions among these transcription factors as well as other proteins. The specificity of these interactions is controversial, and the mechanisms involved in these interactions have not been investigated. Here, we review some of the controversies about the specificities and requirements for ARF and IAA interactions and discuss some of the technical problems that might contribute to differences reported for these interactions. We make some preliminary conclusions that ARF activator-IAA, ARF activator-ARF activator, and ARF repressor-ARF repressor interactions are favored over ARF repressor-IAA and ARF repressor-ARF activator interactions, and we suggest that IAA-IAA interactions are largely indiscriminant. Based upon the predicted secondary structure of domain III/IV, we introduce a model for how ARF and IAA proteins might interact with one another through a ubiquitin-like beta-grasp fold. (C) 2012 Elsevier Ireland Ltd. All rights reserved.

引用

页码：82 / 88

页数：7

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