The Fur-Regulated Gene Encoding the Alternative Sigma Factor PvdS Is Required for Iron-Dependent Expression of the LysR-Type Regulator PtxR in Pseudomonas aeruginosa
Department of Microbiology, University of Colorado Health Sciences Center, Denver, Colorado 80262,1. and Department of Microbiology and Immunology, Texas Tech University Health Sciences Center, Lubbock, Texas 740302.