General Stability | Organism |
---|---|
enzyme is very unstable in crude extracts and to dilution in buffer, purified enzyme is only partially inactivated by dilution in a solution of low ionic strength | Clostridium sp. |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
D-erythro-3,5-diaminohexanoate | non-competitive inhibitor of L-erythro-3,5-diaminohexanoate | Clostridium sp. | |
DL-threo-3,5-diaminohexanoate | partial inhibition by concentrations above 0.3 mM, pH 6.8 | Clostridium sp. | |
NADH | dimeric and tetrameric form of enzyme: product inhibition, competitive inhibitor to NAD+ and uncompetitive inhibitor to 5-amino-3-oxohexanoate | Clostridium sp. |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.074 | - |
NADH | pH 7.0, 23°C | Clostridium sp. | |
0.13 | - |
NAD+ | pH 6.6, 24°C, dimeric form of enzyme | Clostridium sp. | |
0.18 | - |
L-erythro-3,5-diaminohexanoate | pH 6.8, 24°C, tetrameric form of enzyme, pH 6.8 | Clostridium sp. | |
0.22 | - |
L-erythro-3,5-diaminohexanoate | pH 6.8, 24°C, tetrameric form of enzyme, above pH 6.8 | Clostridium sp. | |
0.25 | - |
L-erythro-3,5-diaminohexanoate | pH 6.6, 24°C, dimeric form of enzyme, pH 6.6 | Clostridium sp. | |
0.26 | - |
5-amino-3-oxohexanoate | pH 7.0, 23°C | Clostridium sp. | |
0.28 | - |
NAD+ | pH 6.8, 24°C, tetrameric form of enzyme | Clostridium sp. | |
0.77 | - |
L-erythro-3,5-diaminohexanoate | pH 6.8, 24°C, tetrameric form of enzyme, pH 7.6 and pH 8.9 | Clostridium sp. | |
140 | - |
NH4+ | pH 7.0, 23°C | Clostridium sp. |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
37000 | - |
2 * 37000, the dimer is about one third as active as the tetramer, SDS-PAGE | Clostridium sp. |
37000 | - |
4 * 37000, the dimer is about one third as active as the tetramer, SDS-PAGE | Clostridium sp. |
68000 | - |
dimer, gel filtration | Clostridium sp. |
135000 | - |
tetramer, gel filtration | Clostridium sp. |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
L-erythro-3,5-diaminohexanoate + H2O + NAD+ | Clostridium sp. | enzyme is involved in lysine degradation | 5-amino-3-oxohexanoate + NH3 + NADH + H+ | - |
? | |
L-erythro-3,5-diaminohexanoate + H2O + NAD+ | Clostridium sp. SB4 | enzyme is involved in lysine degradation | 5-amino-3-oxohexanoate + NH3 + NADH + H+ | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Clostridium sp. | - |
- |
- |
Clostridium sp. SB4 | - |
- |
- |
Purification (Comment) | Organism |
---|---|
- |
Clostridium sp. |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
34 | - |
- |
Clostridium sp. |
Storage Stability | Organism |
---|---|
12°C, 100 mM EDTA, pH 6.8, 5 months, 50% loss of activity | Clostridium sp. |
4°C, suspension in ammonium sulfate, 6 months, no detectable loss of activity | Clostridium sp. |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
L-erythro-3,5-diaminohexanoate + H2O + NAD+ | enzyme is involved in lysine degradation | Clostridium sp. | 5-amino-3-oxohexanoate + NH3 + NADH + H+ | - |
? | |
L-erythro-3,5-diaminohexanoate + H2O + NAD+ | enzyme is involved in lysine degradation | Clostridium sp. SB4 | 5-amino-3-oxohexanoate + NH3 + NADH + H+ | - |
? | |
L-erythro-3,5-diaminohexanoate + H2O + NAD+ | the equilibrium of the dehydrogenase reaction is more favorable for amino acid oxidation than are the equilibria of other similar reactions | Clostridium sp. | 5-amino-3-oxohexanoate + NADH + NH4+ | - |
r | |
L-erythro-3,5-diaminohexanoate + H2O + NAD+ | the equilibrium of the dehydrogenase reaction is more favorable for amino acid oxidation than are the equilibria of other similar reactions | Clostridium sp. SB4 | 5-amino-3-oxohexanoate + NADH + NH4+ | - |
r |
Subunits | Comment | Organism |
---|---|---|
dimer | 2 * 37000, the dimer is about one third as active as the tetramer, SDS-PAGE | Clostridium sp. |
More | the enzyme can exist in at least two forms which have different specific activities. The more active form is favored by a high concentration of enzyme and by the presence of a saturating level of L-erythro-3,5-diaminohexanoate and of high concentrations of various salts of which ammonium chloride, Tris chloride, and sodium EDTA are most effective. The less active form is favored by a low concentration of enzyme and low ionic strength | Clostridium sp. |
tetramer | 4 * 37000, the dimer is about one third as active as the tetramer, SDS-PAGE | Clostridium sp. |
Synonyms | Comment | Organism |
---|---|---|
L-erythro-3,5-diaminohexanoate dehydrogenase | - |
Clostridium sp. |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
4 | - |
in absence of glycerol and EDTA, half-life is 100 h | Clostridium sp. |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
6 | 7 | the pH at which the enzyme is most stable depends on the buffer, but generally it is between 6 and 7 | Clostridium sp. |
7.8 | - |
in the absence of glycerol the enzyme dissociates and inactivates at pH 7.8 or above | Clostridium sp. |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
3-acetylpyridine-NAD+ | 70% of activity with NAD+, activity with NADP is 1.3% of the activity with NAD+ | Clostridium sp. | |
additional information | activity with NADP+ is 1.3% of the activity with NAD+ | Clostridium sp. | |
NAD+ | NAD+ is most active cofactor | Clostridium sp. |
Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
---|---|---|---|---|---|
0.004 | - |
NADH | pH 6.8, 24°C, tetrameric form of enzyme | Clostridium sp. | |
0.5 | - |
D-erythro-3,5-diaminohexanoate | pH 6.7, 24°C | Clostridium sp. | |
1.2 | - |
DL-threo-3,5-diaminohexanoate | pH 6.7, 24°C | Clostridium sp. | |
16 | - |
NADH | pH 6.6, 24°C, dimeric form of enzyme | Clostridium sp. |