KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.44 | - |
4-nitrophenyl-beta-D-fucopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus | |
0.67 | - |
4-nitrophenyl-beta-D-glucopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus | |
1.93 | - |
4-nitrophenyl-beta-D-galactopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
54000 | - |
2 * 54000, SDS-PAGE | Caldicellulosiruptor saccharolyticus |
108000 | - |
gel filtration | Caldicellulosiruptor saccharolyticus |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Caldicellulosiruptor saccharolyticus | A4XIG7 | strain DSM 8903 | - |
Purification (Comment) | Organism |
---|---|
heat treatment and His-Trap affinity chromatography | Caldicellulosiruptor saccharolyticus |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
0.08 | - |
crude extract, at 70°C | Caldicellulosiruptor saccharolyticus |
0.28 | - |
after 163fold purification, using 2-nitrophenyl-beta-D-galactopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
0.3 | - |
after 163fold purification, using 2-nitrophenyl-beta-D-glucopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
0.32 | - |
after 163fold purification, using 4-nitrophenyl-beta-D-xylopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
0.75 | - |
after 163fold purification, using 4-nitrophenyl-beta-D-lactopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
1.3 | - |
after 163fold purification, using 4-nitrophenyl-beta-D-cellobioside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
6.1 | - |
after 163fold purification, using 4-nitrophenyl-beta-D-galactopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
6.8 | - |
after 163fold purification, using cellopentaose as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
9.5 | - |
after 163fold purification, using cellotriose as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
10.8 | - |
after 163fold purification, using cellotetraose as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
13 | - |
after 163fold purification, using 4-nitrophenyl-beta-D-glucopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
14.7 | - |
after 163fold purification, using 4-nitrophenyl-beta-D-fucopyranoside as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
16.2 | - |
after 163fold purification, using cellobiose as substrate, at 70°C | Caldicellulosiruptor saccharolyticus |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
2-nitrophenyl beta-D-galactopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 2-nitrophenol + beta-D-galactose | - |
? | |
2-nitrophenyl beta-D-glucopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 2-nitrophenol + D-glucopyranose | - |
? | |
4-nitrophenyl beta-D-cellobioside + H2O | - |
Caldicellulosiruptor saccharolyticus | 4-nitrophenol + cellobiose | - |
? | |
4-nitrophenyl beta-D-fucopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 4-nitrophenol + beta-D-fucose | - |
? | |
4-nitrophenyl beta-D-galactopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 4-nitrophenol + beta-D-galactose | - |
? | |
4-nitrophenyl beta-D-glucopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 4-nitrophenol + D-glucopyranose | - |
? | |
4-nitrophenyl beta-D-lactopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 4-nitrophenol + beta-D-lactose | - |
? | |
4-nitrophenyl beta-D-xylopyranoside + H2O | - |
Caldicellulosiruptor saccharolyticus | 4-nitrophenol + beta-D-xylose | - |
? | |
cellobiose + H2O | - |
Caldicellulosiruptor saccharolyticus | 2 beta-D-glucose | - |
? | |
cellobiose + H2O | highest specific activity | Caldicellulosiruptor saccharolyticus | ? | - |
? | |
cellopentaose + H2O | - |
Caldicellulosiruptor saccharolyticus | ? | - |
? | |
cellotetraose + H2O | - |
Caldicellulosiruptor saccharolyticus | ? | - |
? | |
cellotriose + H2O | - |
Caldicellulosiruptor saccharolyticus | ? | - |
? | |
additional information | cello-oligosaccharides from n equal 2 to 5 as substrates using 4 mM each sugar and 3 units/mg of enzyme are completely hydrolyzed to beta-D-glucose at 70°C within 16 h | Caldicellulosiruptor saccharolyticus | ? | - |
? | |
additional information | the enzyme does not hydrolyze 4-nitrophenyl-alpha-D-glucopyranoside, 4-nitrophenyl-alpha-D-galactopyranoside, 4-nitrophenyl-alpha-L-arabinopyranoside, 4-nitrophenyl-beta-D-maltopyranoside, 4-nitrophenyl-beta-D-mannopyranoside, and 4-nitrophenyl-beta-L-arabinopyranoside | Caldicellulosiruptor saccharolyticus | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
homodimer | 2 * 54000, SDS-PAGE | Caldicellulosiruptor saccharolyticus |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
70 | - |
- |
Caldicellulosiruptor saccharolyticus |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
60 | 80 | the half-lives of the enzyme at 60, 70, and 80°C are 250, 24.3, and 0.4 h | Caldicellulosiruptor saccharolyticus |
Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
82 | - |
4-nitrophenyl-beta-D-galactopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus | |
387 | - |
4-nitrophenyl-beta-D-glucopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus | |
516 | - |
4-nitrophenyl-beta-D-fucopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
5.5 | - |
- |
Caldicellulosiruptor saccharolyticus |
kcat/KM Value [1/mMs-1] | kcat/KM Value Maximum [1/mMs-1] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
42 | - |
4-nitrophenyl-beta-D-galactopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus | |
579 | - |
4-nitrophenyl-beta-D-glucopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus | |
1185 | - |
4-nitrophenyl-beta-D-fucopyranoside | in 50 mM citrate buffer, at pH 5.5 and 70°C | Caldicellulosiruptor saccharolyticus |