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ARF-B(2): A Protein Complex that Specifically Binds to Part of the Anaerobic Response Element of Maize Adh 1



ARF-B(2): A Protein Complex that Specifically Binds to Part of the Anaerobic Response Element of Maize Adh 1



Plant Physiology 93(3): 1094-1101



Crude whole cell extracts from maize (Zea mays L.) suspension cells were examined for DNA binding proteins that specifically interact with a portion of the maize Adh 1 promoter that was previously shown to be in contact with a trans-acting factor in vivo. A 17 base pair, double-stranded oligonucleotide probe was constructed that centered around a strong in vivo dimethylsulfate footprint (B(2)) that coincides with part of the anaerobic response element (ARE). Gel retardation assays were used to characterize a major, specific DNA binding protein activity found in the crude extracts. The activity is present in both aerobic and hypoxically treated cultures and has been designated ARF-B(2) (ARE binding factor). ARF-B(2) appears to be a multicomponent complex, with a 54 kilodalton subunit termed ARF-B(2)alpha in primary contact with the target DNA.

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Accession: 048139504

Download citation: RISBibTeXText

PMID: 16667563

DOI: 10.1104/pp.93.3.1094


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