Showing chemical card for Tetrahydrodipicolinate (CFc000007825)
Record Information
Version
1.0
Creation Date
2022-08-28 10:25:12 UTC
Update Date
2022-09-13 18:54:21 UTC
Chemfont ID
CFc000007825
Molecule Identification
Common Name
Tetrahydrodipicolinate
Definition
Tetrahydrodipicolinate (CAS: 2353-17-5), converted from L-aspartate, is an important intermediate in the lysine biosynthesis pathway. Several pathways are now recognized in bacteria, most algae, fungi, and higher plants for the biosynthesis of lysine. They are divided into two groups: (1) the diaminopimelate (DAP) pathways, and (2) the alpha-aminoadipate (AAA) pathways. In the pathways that belong to the DAP group, lysine is produced from aspartate (along with methionine, threonine, and isoleucine). All of these pathways share the upper segments, which include the four steps required for the conversion of L-aspartate into tetrahydrodipicolinate. They also share the last step, which is the conversion of the intermediate meso-diaminopimelate (D,L-DAP, or meso-DAP) into lysine. However, these pathways differ in the routes leading from tetrahydrodipicolinate to meso-diaminopimelate. The four variations include: (I) the succinylase variant, which involves succinylated intermediates, where tetrahydrodipicolinate is converted into meso-diaminopimelate in four enzymatic steps; (II) the acetylase variant, which involves acetylated intermediates, where tetrahydrodipicolinate is converted into meso-diaminopimelate in four enzymatic steps; (III) the dehydrogenase variant, in which tetrahydrodipicolinate is converted into meso-diaminopimelate in a single enzymatic step; and (IV) the diaminopimelate-aminotransferase variant, in which tetrahydrodipicolinate is converted into meso-diaminopimelate in two steps. In addition to lysine, the pathways in this group also produce meso-DAP, which is an important metabolite on its own.
Belongs to the class of organic compounds known as alpha amino acids and derivatives. These are amino acids in which the amino group is attached to the carbon atom immediately adjacent to the carboxylate group (alpha carbon), or a derivative thereof.
