Symbiotic nitrogen fixation by rhizobia in legume root nodules injects approximately 40
million tonnes of nitrogen into agricultural systems each year. In exchange for reduced …

Legumes, which develop a symbiosis with nitrogen-fixing bacteria, have an increased
demand for iron. Iron is required for the synthesis of iron-containing proteins in the host …

We describe a comprehensive detection system for 18 kinds of classical and newly
described staphylococcal superantigenic toxin genes using four sets of multiplex PCR …

Abstract Iron–sulfur (Fe–S) cluster containing proteins that regulate gene expression are
present in most organisms. The innate chemistry of their Fe–S cofactors makes these …

We used comparative genomics to investigate the distribution of conserved DNA-binding
motifs in the regulatory regions of genes involved in iron and manganese homeostasis in …

The alpha-proteobacteria include several important genera, including the symbiotic N 2-
fixing “rhizobia” the plant pathogen Agrobacterium, the mammalian pathogens Brucella …

Although signal exchange between legumes and their rhizobia is among the best-known
examples of this biological process, most of the more characterized data comes from just a …

Several enzymes have evolved as sensors in signal transduction pathways to control gene
expression, thereby allowing bacteria to adapt efficiently to environmental changes. We …

The Irr protein from the bacterium Bradyrhizobium japonicum is expressed under iron
limitation to mediate iron control of haem biosynthesis. The regulatory input to Irr is the status …

Iron is critical for bacterial growth, but problems arise from the toxicity of excess iron; thus,
iron uptake is subject to tight control. The most widely found and best-studied iron …