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 …

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Examination of a growing range of electron transfer proteins is clarifying what design
elements are and are not naturally selected. Intraprotein electron transfer between natural …

Sulfite oxidizing enzymes are essential mononuclear molybdenum (Mo) proteins involved in
sulfur metabolism of animals, plants and bacteria. There are three such enzymes presently …

Mammalian nitric oxide synthase (NOS), a flavo-hemoprotein, tightly regulates nitric oxide
(NO) synthesis and thereby its dual biological activities as a key signaling molecule for …

Here we extend the engineering descriptions of simple, single-electron-tunneling chains
common in oxidoreductases to quantify sequential oxidation–reduction rates of two-or-more …

Nitrate assimilation in autotrophs provides most of the reduced nitrogen on earth. In
eukaryotes, reduction of nitrate to nitrite is catalyzed by the molybdenum-containing NAD (P) …

The molybdenum cofactor (Moco) containing sulfite oxidase (SO) from Arabidopsis thaliana
has recently been identified and biochemically characterized. The enzyme is found in …

Nitric oxide (NO) is a signalling molecule involved in several physiological processes, in
both prokaryotes and eukaryotes, and nitrite is being recognised as an NO source …

Sulfite oxidase is one of five molybdenum-containing enzymes known in eukaryotes where it
catalyzes the oxidation of sulfite to sulfate. This review covers the history of sulfite oxidase …