Cloned (Comment) | Organism |
---|---|
expressed in Escherichia coli XL1-blue, pBluescript vector, recombinant protein | Escherichia coli |
Crystallization (Comment) | Organism |
---|---|
in complex with beta-hydroxypyruvate, hanging drop vapor-diffusion method, data processing and refinement statistics | Escherichia coli |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
(S)-lysine | allosteric inhibitor | Escherichia coli | |
3-hydroxy-2-oxopropanoate | time-dependent inhibition, qualitatively followed by mass spectrometry, initial noncovalent adduct formation, followed by the slow formation of the covalent adduct | Escherichia coli |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
(S)-aspartate 4-semialdehyde + pyruvate | Escherichia coli | - |
dihydrodipicolinate + H2O | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Escherichia coli | P0A6L2 | - |
- |
Purification (Comment) | Organism |
---|---|
gel filtration | Escherichia coli |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
role of beta-hydroxypruvate in regulating biosynthesis of dihydrodipicolinate unknown, crystal structure of DHDPS enzyme complexed with beta-hydroxypyruvate solved, active site shows the presence of the inhibitor covalently bound to Lys161, hydroxyl group of inhibitor is hydrogen-bonded to main-chain carbonyl of Ile203, evidence for a catalytic function played by this peptide unit, highly strained torsion angle conserved in active site of other homologous enzyme, points to critical role in catalysis | Escherichia coli |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
(S)-aspartate 4-semialdehyde + pyruvate | - |
Escherichia coli | dihydrodipicolinate + H2O | - |
? | |
(S)-aspartate 4-semialdehyde + pyruvate | reaction mechanism and active site analyzed, inhibition by the substrate analog beta-hydroxypyruvate | Escherichia coli | dihydrodipicolinate + H2O | - |
? |
Synonyms | Comment | Organism |
---|---|---|
DHDPS | - |
Escherichia coli |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
30 | - |
assay at | Escherichia coli |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
8 | - |
assay at | Escherichia coli |
Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
---|---|---|---|---|---|
0.21 | - |
3-hydroxy-2-oxopropanoate | time-dependent inhibition, value similar to that of (S)-lysine | Escherichia coli |