Hsieh, M Analysis of the N-terminal leucine heptad and hexad repeats of sigma 54. [electronic resource] - Journal of molecular biology May 1994 - 15-24 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0022-2836 Standard No.: 10.1006/jmbi.1994.1347 doi Subjects--Topical Terms: Amino Acid SequenceBacterial Proteins--chemistryDNA, Bacterial--metabolismDNA-Binding ProteinsDNA-Directed RNA PolymerasesEscherichia coli--geneticsEscherichia coli ProteinsLeucine Zippers--geneticsMolecular Sequence DataPoint Mutation--geneticsPromoter Regions, Genetic--geneticsProtein BindingProtein ConformationRNA Polymerase Sigma 54RNA, Messenger--biosynthesisRepetitive Sequences, Nucleic Acid--geneticsSigma Factor--chemistryTranscription, Genetic--genetics