Microbial Metabolism
The major route for incorporation of ammonia (NH4+) into organic compounds is via

reduction of pyruvate or alpha-ketoglutarate by enzymes
oxidation of pyruvate
atmospheric nitrogen fixation
all of these

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Microbial Metabolism
ATPase

is the enzyme that incorporates ATP into messenger RNA
extrudes protons from the cell coupled to the hydrolysis of ATP to ADP
synthesizes ATP, coupled to transfer of extracellular protons into the cell
carries out each of the reactions indicated in (a) and (b)

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