Characterization of a dehydrogenase motif and an uORF in Arabidopsis ANGUSTIFOLIA gene

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概要

• 論文の詳細を見る

• ANGUSTIFOLIA (AN), the first gene encoding a putative C-terminal binding protein (CtBP) identified in plants, controls leaf cell width in a polarity-dependent manner by regulating the arrangement of cortical microtubules. However, several differences in the sequence of AN have been detected in its conserved CtBP domains, which are transcriptional co-repressors in animals; thus, it is unclear whether AN is a transcriptional co-repressor in plants and how it may function. In this study, we found that AN possesses incomplete D2-HDH and GxGxxG(17x)D motifs, which confer CtBP dehydrogenase activity and NAD-binding for interaction with PxDLS motifs, respectively. In addition, full-length AN was unable to couple the reduction of pyruvate to lactic acid with the oxidation of NADH to NAD+, suggesting that it might not have dehydrogenase activity. Moreover, we found that AN has an additional short open reading frame (ORF), which was identified as an upstream ORF (uORF), in its 5′-untranslated region that overlaps with the start codon of the AN gene. Transcriptional analysis revealed that the uORF and AN ORF are transcribed as a single molecule, indicating that the uORF might influence AN transcription during leaf development.

• 日本植物細胞分子生物学会の論文
• 2008-09-01

著者

• 塚谷 裕一

  基礎生物学研究所

• 塚谷 裕一

  東大 基礎生物学研

• Tsukaya Hirokazu

  Plant Biology Research Center Chubu University:college Of Bioscience And Biotechnology Chubu Univers

• KIM Gyung-Tae

  National Institute for Basic Biology

• Kim Gyung-tae

  Department Of Molecular Biotechnology Dong-a University

• TSUKAYA Hirokazu

  Graduate School of Science, University of Tokyo

• Tsukaya H

  Biological Sciences Graduate School Of Science University Of Tokyo

• Tsukaya Hirokazu

  Graduate School Of Science The University Of Tokyo

• CHO Kiu-Hyung

  Department of Molecular Biotechnology, Dong-A University

• Cho Kiu-hyung

  Department Of Molecular Biotechnology Dong-a University

• Tsukaya H

  National Institute For Basic Biology/okazaki Institutes For Integrated Bioscience

• Tsukaya Hirokazu

  National Inst. Basic Biology Aichi Jpn

• Tsukaya Hirokazu

  Department Of Biological Sciences Graduate School Of Science The University Of Tokyo

• Tsukaya Hirokazu

  National Institute For Basic Biology/okazaki Institutes For Integrated Bioscience

• Tanaka Hirokazu

  Divison Of Biological Science Graduate School Of Science Nagoya University

• Tsukaya Hirokazu

  National Institute For Basic Biology/okazaki Institute For Integrated Bioscience

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