... Bartonella contain anotherwide-ranging iron-responsive regulator called RirA[16–19]. RirA belongs to the Rrf2 family of regulators,which includes IscR and NsrR [20,21] and, similar to them, ... DNA, nor were theysignificantly affected in their ability to function in vivo[24]. However, the conservation of the site ligands,together with their importance for the properties of the protein ... 2011)doi:10.1111/j.1742-4658.2011.08117.x The iron responsive regulator Irr is found in a wide range of a-proteobac-teria, where it regulates many genes in response to the essential but toxicmetal iron. Unlike Fur, the transcriptional...