EC Number | Cloned (Comment) | Organism |
---|---|---|
5.3.1.4 | expressed in Escherichia coli BL21(DE3) cells | Limosilactobacillus fermentum |
EC Number | Crystallization (Comment) | Organism |
---|---|---|
5.3.1.4 | sitting drop vapor diffusion method, using either 0.1 M Bis-Tris (pH 6.0), 25% (w/v) PEGMME5000, or 0.1 M Bis-Tris (pH 6.4 or 6.6), 23% (w/v) PEG3350, 0.2 or 0.3 M NaCl | Limosilactobacillus fermentum |
EC Number | Protein Variants | Comment | Organism |
---|---|---|---|
5.3.1.4 | D268E | the mutant shows 58% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D268K | the mutant shows 48% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D268K/D269K | the mutant shows 65% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D268K/D269K/D299K | the mutant with 115% activity compared to the wild type enzyme exhibits significant optimum pH shifts (from 6.5 to 5.0) and enhancement of pH stability (half-life time increased from 30 to 62 h at pH 6.0). With the addition of borate, D-galactose is isomerized into D-tagatose by this mutant at pH 5.0, resulting in a high conversion rate of 62% | Limosilactobacillus fermentum |
5.3.1.4 | D268K/D299K | the mutant shows 42% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D268R | the mutant shows 88% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D269E | the mutant shows 62% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D269K | the mutant shows 130% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D269K/D299K | the mutant shows 84% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D269R | the mutant shows 88% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D299E | the mutant shows 109% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D299K | the mutant shows 90% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
5.3.1.4 | D299R | the mutant shows 68% activity compared to the wild type enzyme | Limosilactobacillus fermentum |
EC Number | KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
5.3.1.4 | 46 | - |
D-galactose | mutant enzyme D268K/D269K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 51 | - |
D-galactose | mutant enzyme D268K/D269K/D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 55 | - |
D-galactose | mutant enzyme D269K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 56 | - |
D-galactose | mutant enzyme D268K/D269K/D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 56 | - |
D-galactose | mutant enzyme D269K/D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 61 | - |
D-galactose | mutant enzyme D269K/D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 63 | - |
D-galactose | wild type enzyme, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 74 | - |
D-galactose | mutant enzyme D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 78 | - |
D-galactose | mutant enzyme D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 82 | - |
D-galactose | mutant enzyme D299R, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 84 | - |
D-galactose | mutant enzyme D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 84 | - |
D-galactose | mutant enzyme D299R, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 93 | - |
D-galactose | mutant enzyme D299R, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 94 | - |
D-galactose | mutant enzyme D268K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 94 | - |
D-galactose | mutant enzyme D269K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 96 | - |
D-galactose | mutant enzyme D269K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 108 | - |
D-galactose | mutant enzyme D269K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 116 | - |
D-galactose | wild type enzyme, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 117 | - |
D-galactose | mutant enzyme D268K/D269K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 125 | - |
D-galactose | mutant enzyme D268K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 129 | - |
D-galactose | mutant enzyme D268K/D269K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 137 | - |
D-galactose | mutant enzyme D268K/D269K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 166 | - |
D-galactose | mutant enzyme D268K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 201 | - |
D-galactose | mutant enzyme D268K/D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 246 | - |
D-galactose | mutant enzyme D268K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 287 | - |
D-galactose | mutant enzyme D268K/D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum |
EC Number | Metals/Ions | Comment | Organism | Structure |
---|---|---|---|---|
5.3.1.4 | Mn2+ | required | Limosilactobacillus fermentum |
EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|---|
5.3.1.4 | 55000 | - |
6 * 55000, SDS-PAGE | Limosilactobacillus fermentum |
EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
5.3.1.4 | L-arabinose | Limosilactobacillus fermentum | - |
L-ribulose | - |
? | |
5.3.1.4 | L-arabinose | Limosilactobacillus fermentum CGMCC2921 | - |
L-ribulose | - |
? |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
5.3.1.4 | Limosilactobacillus fermentum | D9ILD9 | - |
- |
5.3.1.4 | Limosilactobacillus fermentum CGMCC2921 | D9ILD9 | - |
- |
EC Number | Purification (Comment) | Organism |
---|---|---|
5.3.1.4 | nickel-affinity column chromatography and Source 15Q column chromatography | Limosilactobacillus fermentum |
EC Number | Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|---|
5.3.1.4 | 1 | 2 | mutant enzyme D299E, at pH 7.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 4.6 | - |
mutant enzyme D268K/D299K, at pH 5.5-6.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 5.3 | - |
mutant enzyme D268K, at pH 6.5-7.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 6.4 | - |
mutant enzyme D268E, at pH 6.5-7.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 6.8 | - |
mutant enzyme D268E, at pH 7.5 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 7.1 | - |
mutant enzyme D268K/D269K, at pH 5.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 7.5 | - |
mutant enzyme D299R, at pH 5.0-5.5 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 9.2 | - |
mutant enzyme D269K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 9.7 | - |
mutant enzyme D268R, at pH 5.5 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 9.7 | - |
mutant enzyme D269R, at pH 6.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 9.9 | - |
mutant enzyme D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 11 | - |
wild type enzyme, at pH 6.5 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 12.7 | - |
mutant enzyme D268K/D269K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum |
5.3.1.4 | 14.3 | - |
mutant enzyme D269K, at pH 5.0-5.5 and 65°C | Limosilactobacillus fermentum |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
5.3.1.4 | D-galactose | - |
Limosilactobacillus fermentum | D-tagatose | 39% conversion after 48 h at pH 6.0 and 65°C | ? | |
5.3.1.4 | D-galactose | - |
Limosilactobacillus fermentum CGMCC2921 | D-tagatose | 39% conversion after 48 h at pH 6.0 and 65°C | ? | |
5.3.1.4 | L-arabinose | - |
Limosilactobacillus fermentum | L-ribulose | - |
? | |
5.3.1.4 | L-arabinose | - |
Limosilactobacillus fermentum CGMCC2921 | L-ribulose | - |
? |
EC Number | Subunits | Comment | Organism |
---|---|---|---|
5.3.1.4 | homohexamer | 6 * 55000, SDS-PAGE | Limosilactobacillus fermentum |
EC Number | Synonyms | Comment | Organism |
---|---|---|---|
5.3.1.4 | L-AI | - |
Limosilactobacillus fermentum |
EC Number | Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|---|
5.3.1.4 | 60 | - |
the wild type shows a half-life time of 36 h at pH 5.0 and 60°C | Limosilactobacillus fermentum |
EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|---|
5.3.1.4 | 6.5 | - |
- |
Limosilactobacillus fermentum |
EC Number | pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|---|
5.3.1.4 | 4 | 6 | the wild type shows half-life times of 8 h, 16 h and 36 h at pH values of 4.0, 5.0 and 6.0, respectively | Limosilactobacillus fermentum |
EC Number | kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
5.3.1.4 | 0.02 | - |
D-galactose | wild type enzyme, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.035 | - |
D-galactose | mutant enzyme D268K/D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.05 | - |
D-galactose | mutant enzyme D268K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.055 | - |
D-galactose | mutant enzyme D268K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.057 | - |
D-galactose | mutant enzyme D268K/D269K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.065 | - |
D-galactose | mutant enzyme D268K/D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.067 | - |
D-galactose | mutant enzyme D268K/D269K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.07 | - |
D-galactose | mutant enzyme D268K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.078 | - |
D-galactose | mutant enzyme D268K/D269K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.09 | - |
D-galactose | mutant enzyme D268K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.1 | - |
D-galactose | mutant enzyme D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.103 | - |
D-galactose | mutant enzyme D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.105 | - |
D-galactose | mutant enzyme D269K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.108 | - |
D-galactose | mutant enzyme D268K/D269K/D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.108 | - |
D-galactose | mutant enzyme D299R, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.113 | - |
D-galactose | mutant enzyme D268K/D269K/D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.113 | - |
D-galactose | mutant enzyme D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.117 | - |
D-galactose | mutant enzyme D269K/D299K, at pH 4.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.118 | - |
D-galactose | mutant enzyme D299R, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.12 | - |
D-galactose | mutant enzyme D268K/D269K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.127 | - |
D-galactose | mutant enzyme D299R, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.13 | - |
D-galactose | wild type enzyme, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.135 | - |
D-galactose | mutant enzyme D269K/D299K, at pH 6.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.152 | - |
D-galactose | mutant enzyme D269K/D299K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.165 | - |
D-galactose | mutant enzyme D269K, at pH 5.0 and 65°C | Limosilactobacillus fermentum | |
5.3.1.4 | 0.173 | - |
D-galactose | mutant enzyme D269K, at pH 6.0 and 65°C | Limosilactobacillus fermentum |