A transcriptional activation domain of ATMYB2, a drought‐inducible Arabidopsis Myb‐related protein

• Published in: The Plant journal : for cell and molecular biology Vol. 10; no. 6; pp. 1145 - 1148
• Main Authors: Urao, Takeshi, Noji, Masa‐aki, Yamaguchi‐Shinozaki, Kazuko, Shinozaki, Kazuo
• Format: Journal Article
• Language: English
• Published: Osney Mead, Oxford OX2 0EL, UK Blackwell Science Ltd 01.12.1996; Blackwell Science
• Subjects: Arabidopsis - cytology; Arabidopsis - genetics; Arabidopsis Proteins; Arabidopsis thaliana; Biological and medical sciences; Disasters; Fundamental and applied biological sciences. Psychology; Gene Expression Regulation, Plant; Genes, Reporter; Molecular and cellular biology; Molecular genetics; Plant Proteins - genetics; Protoplasts; Structure-Activity Relationship; Trans-Activators - genetics; Transcription, Genetic; Transcription. Transcription factor. Splicing. Rna processing; Transcriptional Activation; Water - metabolism; Transcription; Gene product; Activation; Structure function relationship; Arabidopsis thaliana; C terminal-Sequence; Cruciferae; Dicotyledones; C-Onc gene; Angiospermae; Spermatophyta; Experimental plant; Molecular domain
• ISSN: 0960-7412; 1365-313X
• DOI: 10.1046/j.1365-313X.1996.10061145.x

Summary Trans‐activation activity of ATMYB2, a drought‐inducible Myb‐related protein in Arabidopsis thaliana, was analyzed using a transient assay of Arabidopsis leaf protoplasts. ATMYB2 activated the transcription of a reporter gene from the MYB‐binding site in a sequence‐specific manner. Deletion of the C‐terminal region of ATMYB2 reduced the trans‐activation of the reporter gene, indicating that the acidic region at the C‐terminus of ATMYB2 is required for transcriptional activation. The domain exchange analysis with the yeast GAL4 revealed that the C‐terminal acidic region of ATMYB2 contains a sufficient domain for trans‐activation. These results indicate that ATMYB2 acts as a transcriptional activator and that the C‐terminal acidic region of ATMYB2 can function as a transcriptional activation domain.