Bacteria display an abundance of cellular forms and can change shape during their life
cycle. Many plausible models regarding the functional significance of cell morphology have …

Escherichia coli is a predominant species among facultative anaerobic bacteria of the
gastrointestinal tract. Both its frequent community lifestyle and the availability of a wide array …

Bacteria come in a range of shapes, including round, rod-shaped, curved and spiral cells.
This morphological diversity implies that different mechanisms exist to guide proper cell …

We describe a method for generating gene replacements and deletions in Escherichia coli.
The technique is simple and rapid and can be applied to most genes, even those that are …

Severe combined deficiency of the 2-oxoacid dehydrogenases, associated with a defect in
lipoate synthesis and accompanied by defects in complexes I, II, and III of the mitochondrial …

Genetic Characterization................................................ Physical Characterization..........................
..................... Biochemical Characterization............................................ Variability in …

The novel sigma factor (sigma S) encoded by rpoS (katF) is required for induction of many
growth phase-regulated genes and expression of a variety of stationary-phase phenotypes …

The alternative sigma factor RpoS controls the expression of many stationary-phase genes
in Escherichia coli and other bacteria. Though the RpoS regulon is a large, conserved …

The transcription of iron uptake and storage genes in Saccharomyces cerevisiae is primarily
regulated by the transcription factor Aft1. Nucleocytoplasmic shuttling of Aft1 is dependent …

Eukaryotic cells contain hundreds of metalloproteins that are supported by intracellular
systems coordinating the uptake and distribution of metal cofactors. Iron cofactors include …