Molybdenum is the only second-row transition metal required by most living organisms, and
is nearly universally distributed in biology. Enzymes containing molybdenum in their active …

Tungsten is widely distributed in biology, however, the majority of the tungsten-containing
enzymes purified to date, originates from anaerobic archaea and bacteria. Tungsten …

In both bacteria and archaea, molybdate is transported by an ABC-type transporter
comprising three proteins, ModA (periplasmic binding protein), ModB (membrane protein) …

The history and changing function of tungsten as the heaviest element in biological systems
is given. It starts from an inhibitory element/anion, especially for the iron molybdenum …

Molybdenum (Mo) is vital for the activity of a small but essential group of enzymes called
molybdoenzymes. So far, specifically five molybdoenzymes have been discovered in …

Acquisition of the trace-element molybdenum via the high-affinity ATP-binding cassette
permease ModABC is essential for Pseudomonas aeruginosa respiration in anaerobic and …

The molybdate‐dependent transcriptional regulator (ModE) from Escherichia coli functions
as a sensor of molybdate concentration and a regulator for transcription of operons involved …

Background: Periplasmic receptors constitute a diverse class of binding proteins that differ
widely in size, sequence and ligand specificity. Nevertheless, almost all of them display a …

The periplasmic binding protein-dependent permeases constitute a large and important
class of active transport systems for the uptake of nutrients by Gram-negative bacteria …

Vanadium is a cofactor in the alternative V-nitrogenase that is expressed by some N2-fixing
bacteria when Mo is not available. We investigated the V requirements, the kinetics of V …