A bacteriophage transcription regulator inhibits bacterial transcription initiation by σ-factor displacement.

Escherichia coli-Pichia pastoris shuttle vector pPpARG4

300 mM NA sodium chloride, 50 mM NA sodium phosphate, 90% H2O/10% D2O

Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax