A nonessential amino acid which plays an important role in metabolism for the construction of other amino acids and biochemicals in the Krebs cycle.

Biochemicals that are synthesized from aspartic acid include:

structural formula for aspartic acid:

 _                         _
|             H   H         | --
|              \ /          |
| O         H   N    O      |
|  \\        \ /    /       |
|   C -- C -- C -- C        |  aspartic acid
|  /    / \         \\      |  C4H6NO4-
| O    H   H         O -- H |
|_                         _|