aspartate ammonia-lyase

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as·par·tate am·mo·ni·a-ly·ase

a nonmammalian enzyme that catalyzes the conversion of l-aspartate to fumarate, splitting out ammonia.
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20) MRS may show normal to increased choline and myoinositol and decreased n-acetyl aspartase.
pestis lacks aspartase activity in this environment, the bacteria converted L-glutamate into aspartic acid during the time of bacterial restriction.
However, it has been shown that the kinetics of enzymes can be changed by polyhydric alcohols (25) and that aspartase is activated by glycerol, ethylene glycol (1,2-ethanediol), and propylene glycol (1,2-propanediol) (26).