Activating Compound | Comment | Organism | Structure |
---|---|---|---|
EDTA | - |
Aspergillus niger | |
eserine | - |
Aspergillus niger |
Application | Comment | Organism |
---|---|---|
medicine | cetraxate hydrochloride is a widely used antiulcer agent industrially produced | Aspergillus niger |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Ca2+ | 1.0 mM, 71% relative residual activity | Aspergillus niger | |
Co2+ | 1.0 mM, 68% relative residual activity | Aspergillus niger | |
Cu2+ | 1.0 mM, 72% relative residual activity | Aspergillus niger | |
diisopropyl phosphofluoridate | 9% relative residual activity | Aspergillus niger | |
Fe2+ | 1.0 mM, 81% relative residual activity | Aspergillus niger | |
Hg2+ | 9% relative residual activity | Aspergillus niger | |
Mg2+ | 1.0 mM, 64% relative residual activity | Aspergillus niger | |
Mn2+ | 1.0 mM, 79% relative residual activity | Aspergillus niger | |
Ni2+ | 1.0 mM, 67% relative residual activity | Aspergillus niger | |
o-phenanthroline | 80% relative residual activity | Aspergillus niger | |
Zn2+ | 1.0 mM, 70% relative residual activity | Aspergillus niger |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
4 | - |
benzyl cetraxate | pH 4.5, 30°C | Aspergillus niger |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
35000 | - |
gel filtration | Aspergillus niger |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
cetraxate benzyl ester + H2O | Aspergillus niger | - |
cetraxate + benzyl alcohol | - |
? | |
L-Phe benzyl ester + H2O | Aspergillus niger | - |
benzyl alcohol + L-phenylalanine | - |
? | |
L-Tyr benzyl ester + H2O | Aspergillus niger | - |
benzyl alcohol + L-tyrosine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Aspergillus niger | - |
- |
- |
Purification (Comment) | Organism |
---|---|
partial | Aspergillus niger |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
commercial preparation | Sumizyme AC, Shin-Nippon Chemical Industries Co., Ltd., cellulase activity 2-5 unit/mg | Aspergillus niger | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
additional information | - |
specific activity 791 units/mg | Aspergillus niger |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
benzyl esters of substituted phenyl propanoates + H2O | benzyl esters of aliphatic and aromatic carboxylic acids, benzyl esters of phenylalanine Phe-By and tyrosine Tyr-By are hydrolyzed | Aspergillus niger | benzyl alcohol + substituted phenyl propanoate | - |
? | |
cetraxate benzyl ester + H2O | - |
Aspergillus niger | cetraxate + benzyl alcohol | - |
? | |
L-Phe benzyl ester + H2O | - |
Aspergillus niger | benzyl alcohol + L-phenylalanine | - |
? | |
L-Tyr benzyl ester + H2O | - |
Aspergillus niger | benzyl alcohol + L-tyrosine | - |
? | |
additional information | enzyme shows no cellulase, protease or lipase activity, does not hydrolyze ester groups such as Tyr-Me, Tyr-tert-Bu, 1-Me, 1-iso-Pro and 1 Ph | Aspergillus niger | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
monomer | 1 * 35000, SDS-PAGE | Aspergillus niger |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
40 | - |
debenzylation | Aspergillus niger |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
40 | - |
stable at temperatures below | Aspergillus niger |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
4.5 | - |
for debenzylating substrate | Aspergillus niger |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
4 | 7 | stable in this range | Aspergillus niger |
Organism | Comment | pI Value Maximum | pI Value |
---|---|---|---|
Aspergillus niger | isoelectric focusing, carrier ampholite, pH range from 3.5-10.0 at 200 V for 30 min and 700 V for 90 min | - |
5.3 |