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An enzyme that is important in the biochemical processing of several amino acids, such as the phosphorylation of aspartic acid.

References in periodicals archive ?
The amino acid and nucleotide sequences of the key regulatory enzymes aspartate kinase and homoserine dehydrogenase found in these organisms were employed to illustrate the use of readily available software.
Upon investigation of the total number of genes in the three organisms related to the three selected enzymes at the beginning of the pathway, several forms of aspartate kinase are present in the three organisms.
To illustrate software utilization in the study of these enzymes and possible differences in the three organisms studied, aspartate kinase and homoserine dehydrogenase were selected for amino acid sequence comparisons.