- - a. aminotransferase (AST) an enzyme catalyzing the reversible transfer of an amine group from l-glutamic acid to oxaloacetic acid, forming α-ketoglutaric acid and l-aspartic acid; a diagnostic aid in viral hepatitis and in myocardial infarction. SYN: a. transaminase, glutamic-aspartic transaminase, glutamic-oxaloacetic transaminase, serum glutamic-oxaloacetic transaminase.- a. ammonia-lyase a nonmammalian enzyme catalyzing the conversion of l-aspartic acid to fumaric acid, splitting out ammonia. SYN: aspartase, fumaric aminase.- a. carbamoyltransferase an enzyme catalyzing formation of ureidosuccinate (N-carbamoyl-l-a.) and orthophosphate by the transfer of a carbamoyl moiety from carbamoylphosphate to the amino group of l-a.; participates in pyrimidine biosynthesis.- a. kinase an enzyme catalyzing the phosphorylation by ATP of l-a. to form 4-phospho-l-a. (β-aspartyl phosphate) and ADP.- a. transaminase SYN: a. aminotransferase.
* * *as·par·tate -.tāt n a salt or ester of aspartic acid
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* * *as·par·tate (ə-spahrґtāt) a salt of aspartic acid, or aspartic acid in dissociated form.
Medical dictionary. 2011.