Structural comparison of the PhoB and OmpR DNA-binding/transactivation domains and the arrangement of PhoB molecules on the phosphate box.

Abstract excerpt

PhoB is a transcriptional activator that binds to the phosphate box in the promoters of the phosphate genes of Escherichia coli. PhoB contains two functional domains, an N-terminal phosphorylation domain and a C-terminal DNA-binding/transactivation domain. Here, the three-dimensional structure of the DNA-binding/transactivation domain has been determined by NMR. It consists of an N-terminal four-stranded...

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