Summary
Nuclear proteins were extracted from isolated nuclei of immature maize kernels. The promoter region (1.5 kb) of the Shrunken gene, which is highly transcribed in the developing endosperm of the kernel, was scanned for protein-DNA interactions. Several promoter fragments showed protein-DNA complex formation in gel retardation experiments. Two different nucleo-protein complexes (MNP1 and MNP2) have been distinguished in competition and DNase I footprinting experiments. Both nuclear DNA-binding activities are able to recognize multiple sites distributed over a 1.5 kb upstream region of the Shrunken gene. Some of the binding sites established in the in vitro reconstitution experiments are located near to DNase I hypersensitive sites found in the promoter of the Shrunken gene (Frommer and Starlinger 1988).
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Communicated by H. Saedler
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Werr, W., Springer, B., Schürmann, J. et al. Multiple interactions between nuclear proteins of Zea mays and the promoter of the Shrunken gene. Mol Gen Genet 212, 342–350 (1988). https://doi.org/10.1007/BF00334705
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DOI: https://doi.org/10.1007/BF00334705