The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Maize regulatory gene opaque-2 encodes a protein with a "leucine-zipper" motif that binds to zein DNA.
Open accessAbstract
The opaque-2 locus (o2) in maize regulates the expression of many members of the zein multigene family of storage proteins. cDNA clones for a wild-type allele of the (o2) locus (O2) were isolated from a maize endosperm cDNA library and sequenced. We found a 258-nucleotide 5' leader sequence containing three short open reading frames followed by a sequence specifying a protein of 437 amino acids. The presumptive amino acid sequence of the protein (O2) specified by the O2 cDNA contains a "leucine-zipper" domain characteristic of some mammalian and fungal transcription activation factors. lacZ-O2 fusion constructs, using nearly the entire coding region of O2 or only a fragment specifying the leucine-zipper domain, were expressed in Escherichia coli. In an in vitro binding assay, the beta-galactosidase-O2 fusion proteins bound to two specific regions on the 5' side of the coding sequence in a zein genomic clone. This suggests that the O2 protein affects zein transcription through direct interaction with one or more zein promoter elements.
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Citations
Cites
The Leucine Zipper: A Hypothetical Structure Common to a New Class of DNA Binding Proteins
Landschulz, W. H., Johnson, P. F., & McKnight, S. L. (1988) · Science · doi:10.1126/science.3289117 · Cited by 3,443
Cited by
Endosperm origin, development, and function.
Lopes, M. A., & Larkins, B. A. (1993) · The Plant Cell · doi:10.1105/tpc.5.10.1383 · Cited by 417
Novel role of ZmaNAC36 in co-expression of starch synthetic genes in maize endosperm
Zhang, J., Chen, J., Yi, Q., Hu, Y., Liu, H., Liu, Y., & Huang, Y. (2014) · Plant Molecular Biology · doi:10.1007/s11103-013-0153-x · Cited by 89
Ehrlich, K. C., Cary, J. W., & Ehrlich, M. (1992) · Gene · doi:10.1016/0378-1119(92)90726-6 · Cited by 30
Metadata
- Authors
- Schmidt, R. J., Burr, F. A., Aukerman, M. J., & Burr, B.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1990-01
- Volume
- 87
- Issue
- 1
- Pages
- 46-50
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1998221192
- Cited by
- 449
- References
- 1
- FWCI
- 56.00
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Maize regulatory gene opaque-2 encodes a protein with a "leucine-zipper" motif that binds to zein DNA. https://app.cochat.ai/papers/10.1073/pnas.87.1.46
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- Schmidt, R. J., Burr, F. A., Aukerman, M. J., & Burr, B. (1990). Maize regulatory gene opaque-2 encodes a protein with a "leucine-zipper" motif that binds to zein DNA. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.87.1.46
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