Inhibitors | Comment | Organism | Structure |
---|---|---|---|
2-acetamido-2-deoxy-D-galactono(1-4)lactone | complete inhibition with 100 mM | Helicella ericetorum | |
D-mannose | 75% inhibition with 100 mM | Helicella ericetorum | |
Fe3+ | concentration of 10 mM results in 85% inhibition | Helicella ericetorum | |
Hg2+ | concentration of 10 mM results in 97% inhibition | Helicella ericetorum | |
N-acetyl-beta-D-glucosaminolactone | complete inhibition with 100 mM | Helicella ericetorum | |
N-acetyl-D-galactosamine | 80% inhibition with 100 mM | Helicella ericetorum | |
N-acetyl-D-glucosamine | 80% inhibition with 100 mM | Helicella ericetorum | |
Sodium acetate | concentration of 10 mM results in 20% inhibition | Helicella ericetorum |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.19 | - |
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside | - |
Helicella ericetorum | |
0.43 | - |
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside | - |
Helicella ericetorum |
Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|
118000 | 147000 | gel filtration Sephadex G-200 | Helicella ericetorum |
120000 | 145000 | gel filtration Sephadex G-100 | Helicella ericetorum |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
N-acetyl-beta-D-hexosaminides + H2O | Helicella ericetorum | - |
N-acetyl-D-hexosamines | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Helicella ericetorum | - |
Müller | - |
Helicella ericetorum Muller | - |
Müller | - |
Purification (Comment) | Organism |
---|---|
330fold | Helicella ericetorum |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
(N-acetyl-D-glucosamine)4 + 3 H2O = 4 2-(acetylamino)-2-deoxy-beta-D-glucopyranose | same active site for N-glucosaminidase and N-galactosaminidase activities | Helicella ericetorum | |
(N-acetyl-D-glucosamine)4 + 3 H2O = 4 2-(acetylamino)-2-deoxy-beta-D-glucopyranose | endo-type reaction | Helicella ericetorum |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
digestive gland | - |
Helicella ericetorum | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
7.8 | - |
substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside | Helicella ericetorum |
33 | - |
substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside | Helicella ericetorum |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
chitin + H2O | - |
Helicella ericetorum | N-acetylglucosamine | - |
? | |
chitin + H2O | - |
Helicella ericetorum Muller | N-acetylglucosamine | - |
? | |
chondroitin 4-sulfate + H2O | - |
Helicella ericetorum | N-acetylgalactosamine + ? | - |
? | |
hyaluronic acid + H2O | - |
Helicella ericetorum | N-acetylglucosamine + ? | - |
? | |
hyaluronic acid + H2O | - |
Helicella ericetorum Muller | N-acetylglucosamine + ? | - |
? | |
N-acetyl-beta-D-hexosaminides + H2O | - |
Helicella ericetorum | N-acetyl-D-hexosamines | - |
? | |
ovalbumin + H2O | - |
Helicella ericetorum | N-acetylglucosamine + ? | - |
? | |
ovalbumin + H2O | - |
Helicella ericetorum Muller | N-acetylglucosamine + ? | - |
? | |
ovomucoid + H2O | - |
Helicella ericetorum | N-acetylglucosamine + ? | - |
? | |
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside + H2O | - |
Helicella ericetorum | 2-acetamido-2-deoxy-D-galactose + p-nitrophenol | - |
? | |
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside + H2O | - |
Helicella ericetorum Muller | 2-acetamido-2-deoxy-D-galactose + p-nitrophenol | - |
? | |
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside + H2O | - |
Helicella ericetorum | 2-acetamido-2-deoxy-D-glucose + p-nitrophenol | - |
? | |
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside + H2O | - |
Helicella ericetorum Muller | 2-acetamido-2-deoxy-D-glucose + p-nitrophenol | - |
? |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
50 | - |
stable for 100 min | Helicella ericetorum |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
4.5 | - |
substrate: p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside and -glucopyranoside | Helicella ericetorum |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
3.3 | - |
50% of activity are lost | Helicella ericetorum |
3.8 | 4.6 | at 37°C stable for 2 hours | Helicella ericetorum |
6.3 | - |
50% of activity are lost | Helicella ericetorum |