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Names | |
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Preferred IUPAC name (2S, 3Ξ)-2-Amino-3-hydroxybutanedioic acid | |
Other names (2S, 3Ξ)-2-Amino-3-hydroxysuccinic acid 3-Hydroxyaspartic acid Beta-hydroxyaspartic acid | |
Identifiers | |
3D model (JSmol) | |
ChEBI | |
ChemSpider | |
KEGG | |
PubChem CID | |
UNII | |
CompTox Dashboard (EPA) | |
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Properties | |
C4H7NO5 | |
Molar mass | 149.102 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
3-Hydroxyaspartic acid (three letter abbreviation: Hya), also known as beta-hydroxyaspartic acid, is a derivative of aspartic acid which has been hydroxylated at position C3. The conjugated acid of 3-hydroxyaspartic acid is 3-hydroxyaspartate. The adjacent image shows L-threo-3-hydroxyaspartate.
Similarly to proteinogenic isoleucine and threonine, 3-hydroxyaspartic acid contains two chiral centers. As such, it can exist in 4 stereoisomers, which form two pairs of enantiomers. [1]
The Hya amino acid residue is sometimes contained in EGF-like domains such as Vitamin K-dependent coagulation plasma proteins including protein C. [2]
D-threo-3-Hydroxyaspartate is a part of the siderophore ornibactin. [3]