Uptake of ammonium ions by marine microorganisms called archaea is a key first step in the conversion of ammonium to nitrogen found in ecosystems. Structural evidence reveals how archaea capture ...

Membrane proteins: do they carry the gas ammonia or the ammonium ion in their luggage? And is transport active or passive? Biochemists have long speculated on the mechanistic details of the ammonium ...

When Farm Journal Field Agronomist Ken Ferrie gives a presentation about nitrogen, one question is more common than any other: “Should I use a nitrogen stabilizer?” Simple question, but the answer is ...

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