Plant physiology (Bethesda), 2002-10, Vol.130 (2), p.688-697
2002
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Details
- Autor(en) / Beteiligte
- Titel
- Arabidopsis ABI5 Subfamily Members Have Distinct DNA-Binding and Transcriptional Activities
- Ist Teil von
- Plant physiology (Bethesda), 2002-10, Vol.130 (2), p.688-697
- Ort / Verlag
- Rockville, MD: American Society of Plant Biologists
- Erscheinungsjahr
- 2002
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- A small family of novel basic leucine zipper proteins that includes abscisic acid (ABA)-INSENSITIVE 5 (ABI5) binds to the promoter region of the lea class gene Dc3. The factors, referred to as AtDPBFs (Arabidopsis Dc3 promoter-binding factors), were isolated from an immature seed cDNA library. AtDPBFs bind to the embryo specification and ABA-responsive elements in the Dc3 promoter and are unique in that they can interact with cis-elements that do not contain the ACGT core sequence required for the binding of most other plant basic leucine zipper proteins. Analysis of full-length cDNAs showed that at least five different Dc3 promoter-binding factors are present in Arabidopsis seeds; one of these, AtDPBF-1, is identical to ABI5. As expected, AtDPBF-1/ABI5 mRNA is inducible by exogenous ABA in seedlings. Despite the near identity in their basic domains, AtDPBFs are distinct in their DNA-binding, dimerization, and transcriptional activity.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0032-0889eISSN: 1532-2548DOI: 10.1104/pp.003566Titel-ID: cdi_proquest_miscellaneous_72172935
- Format
- –
- Schlagworte
- Abscisic Acid - pharmacology, Amino Acid Sequence, Arabidopsis - genetics, Arabidopsis - metabolism, Arabidopsis Proteins - genetics, Arabidopsis Proteins - metabolism, Basic leucine zipper transcription factors, Biological and medical sciences, Development and Hormone Action, DNA-Binding Proteins - genetics, DNA-Binding Proteins - metabolism, Fundamental and applied biological sciences. Psychology, Gene Expression Regulation, Plant - genetics, Genes, Genes. Genome, Leucine Zippers - genetics, Molecular and cellular biology, Molecular genetics, Molecular Sequence Data, Multigene Family - genetics, Phosphorylation, Phylogeny, Plant cells, Plants, Protein Isoforms - genetics, Protein Isoforms - metabolism, RNA, Seedlings, Seeds, Seeds - genetics, Seeds - metabolism, Sequence Homology, Amino Acid, Sunflowers, Transcription Factors - genetics, Transcription Factors - metabolism, Transcriptional Activation, Two-Hybrid System Techniques, Yeasts, Yeasts - genetics