The light-regulated Arabidopsis bZIP transcription factor gene ATB2 encodes a protein with an unusually long leucine zipper domain.
A light-regulated basic domain/leucine zipper gene, ATB2, was identified in an Arabidopsis thaliana transcription factor gene collection. Both genomic and cDNA clones of ATB2 were isolated. The gene encodes a small protein (18 kDa) which mainly consists of the basic domain and an unusually long leucine zipper. The expression of the ATB2 gene is induced when etiolated or dark-adapted seedlings are transferred to the light. Moreover, its expression is derepressed in dark-grown seedlings of the photomorphogenic mutants cop1 and det1. In mature plants, transcript levels are particularly high in flowers and also light-responsive in these tissues.
Rook
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Department of Molecular Cell Biology, University of Utrecht, The Netherlands.
Weisbeek
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Smeekens
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D000220:Adaptation, Biological; D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics*; D029681:Arabidopsis Proteins; D001483:Base Sequence; D050976:Basic-Leucine Zipper Transcription Factors; D002736:Chloroplasts / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000235:genetics*; D003624:Darkness; D018506:Gene Expression Regulation, Plant / Q000528:radiation effects*; D017343:Genes, Plant; D016350:Leucine Zippers; D008027:Light; D008969:Molecular Sequence Data; D009024:Morphogenesis / Q000235:genetics; D009154:Mutation; D010940:Plant Proteins / Q000235:genetics; D014157:Transcription Factors / Q000235:genetics*; D014158:Transcription, Genetic
C112599:ATB2 protein, Arabidopsis; D029681:Arabidopsis Proteins; D050976:Basic-Leucine Zipper Transcription Factors; D004268:DNA-Binding Proteins; D010940:Plant Proteins; D014157:Transcription Factors