Mutants of the catabolite activator protein of Escherichia coli that are specifically deficient in the gene-activation function.
- 1 December 1987
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 84 (23) , 8315-8319
- https://doi.org/10.1073/pnas.84.23.8315
Abstract
In the presence of cyclic AMP, the catabolite activator protein (CAP) of Escherichia coli binds DNA and stimulates transcription at a number of promoters. We have examined a model of CAP bound at the gal promoter and, using directed mutagenesis, have isolated CAP mutants that are analogous to the lambda repressor positive control (pc) mutants. These CAP mutants bind DNA but are defective in stimulating transcription at the gal P1 promoter. These mutants are also altered in positive control at the lac and malT promoters, where CAP binds to sites further upstream from the transcription start site.This publication has 28 references indexed in Scilit:
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