This review describes a molecular mechanism for regulation of one pathway of microbial
assimilation of iron, an element which may well be a nutrient required by all living cells …

INTRODUCTION lron is believed to be an essential element for all life forms. Widely
distributed over the earth in rocks and soils, and reckoned to be the fourth most abundant …

Publisher Summary This chapter describes iron and its role in microbial physiology. A prime
function of iron in aerobic microbial species is in respiration—the reduction of oxygen by …

Iron is an essential element for most living organisms. Its roles in microbial physiology are
numerous. Iron is a constituent of all haem enzymes, which include cytochromes and …

The study of iron assimilation systems in microorganisms, particularly in enteric bacteria, has
become an active field of research in recent years. There are several reasons for this state of …

Iron is a nutrient which, although very ubiquitous, is present in low amounts as a freely,
soluble, ferric ion in nature [ll. This cation is essential for bacterial growth, since it is …

The facile ability of iron to gain and lose electrons has made iron an important participant in
a wide variety of biochemical reactions. Binding of ligands to iron modifies its redox …

In Gram-negative bacteria an iron-deficient state is required for both induction of desferri-
siderophores and overproduction of the cognate outer membrane receptor proteins. Thus …

The great importance of iron in microbial metabolism can be rationalized in terms of its
unique chemical and physicochemical properties. Iron has two oxidation states, ferrous and …

Cells of plants, most microorganisms, and animals require well-defined amounts of iron for
survival, replication, and differentiation. The metal is an important component of such …