8 NMetabolism

Summary nitrogen enters the biophere through plants

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Unformatted text preview: the biophere through plants, fungi, but mainly bacteria and archaea •Plants, fungi, and bacteria reduce nitrate nitrogen to ammonium •Ammonium is incorporated into organic molecules by glutamate dehydrogenase and glutamine synthase/GOGAT •Other amino acids are formed by transamination •The urea cycle removes nitrogen from ammonia and alanine as urea...
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