This pattern represents a conserved region of auxin-responsive transcription factors.

The plant hormone auxin (indole-3-acetic acid) can regulate the gene expression of several families, including Aux/IAA, GH3 and SAUR families. Two related families of proteins, Aux/IAA proteins (IPR003311) and the auxin response factors (ARF), are key regulators of auxin-modulated gene expression [1]. There are multiple ARF proteins, some of which activate, while others repress transcription. ARF proteins bind to auxin-responsive cis-acting promoter elements (AuxREs) using an N-terminal DNA-binding domain. It is thought that Aux/IAA proteins activate transcription by modifying ARF activity through the C-terminal protein-protein interaction domains (IPR011525) found in both Aux/IAA and ARF proteins.

1. Genetics of Aux/IAA and ARF action in plant growth and development. Plant Mol. Biol. 49, 387-400

This pattern represents a conserved region of auxin-responsive transcription factors.

The p
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