EC Number | Cloned (Comment) | Organism |
---|---|---|
3.2.1.4 | CenA, DNA and amino acid sequence determination and analysis, expression of wild-type and mutant enzymes in Escherichia coli strain BL21(DE3), subcloning in Escherichia coli strain DH5alpha | Cellulomonas fimi |
EC Number | Protein Variants | Comment | Organism |
---|---|---|---|
3.2.1.4 | D216C | replacement of Asp with cysteinesulfinate by combination of site-directed mutagenesis and chemical modification, the substituted cysteinyl residue is oxidized to cysteine sulfinic acid with hydrogen peroxide, the resulting protein product retains its native structure, almost inactive mutant | Cellulomonas fimi |
3.2.1.4 | D216N | site-directed mutagenesis, the mutant shows reduced activity and a shift in pH dependence compared to the wild-type enzyme | Cellulomonas fimi |
3.2.1.4 | D252C | site-directed mutagenesis, substitution of the catalytic acid residue Asp252, almost inactive mutant | Cellulomonas fimi |
3.2.1.4 | D392A | site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme | Cellulomonas fimi |
3.2.1.4 | D392C | replacement of Asp with cysteinesulfinate by combination of site-directed mutagenesis and chemical modification, the substituted cysteinyl residue is oxidized to cysteine sulfinic acid with hydrogen peroxide, the resulting protein product retains its native structure. Oxidation of the Asp392Cys mutant enzyme restores 52% of wild-type activity when assessed at pH 7.5. The replacement of Asp392 with cysteine sulfinate induced an acidic shift in the pH profile of the enzyme such that this enzyme derivative is more active than wild-type CenA below pH 5.5 | Cellulomonas fimi |
3.2.1.4 | D392N | site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme | Cellulomonas fimi |
3.2.1.4 | D392S | site-directed mutagenesis, the mutant shows reduced activity compared to the wild-type enzyme | Cellulomonas fimi |
EC Number | Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|---|
3.2.1.4 | extracellular | CenA | Cellulomonas fimi | - |
- |
EC Number | Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
---|---|---|---|---|
3.2.1.4 | 46700 | - |
x * 46700, CenA | Cellulomonas fimi |
EC Number | Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
3.2.1.4 | cellulose + H2O | Cellulomonas fimi | - |
? | - |
? |
EC Number | Organism | UniProt | Comment | Textmining |
---|---|---|---|---|
3.2.1.4 | Cellulomonas fimi | - |
gene cenA | - |
EC Number | Reaction | Comment | Organism | Reaction ID |
---|---|---|---|---|
3.2.1.4 | cellohexaose + H2O = 2 cellotriose | proposed mechanism of action of inverting glycoside hydrolases and structures of catalytic residues, overview. The catalytic base is Asp392, catalytic acid residue is Asp252 | Cellulomonas fimi |
EC Number | Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|---|
3.2.1.4 | carboxymethyl cellulose + H2O | - |
Cellulomonas fimi | ? | - |
? | |
3.2.1.4 | cellulose + H2O | - |
Cellulomonas fimi | ? | - |
? | |
3.2.1.4 | additional information | inverting glycoside hydrolases catalyze bond cleavage using a single-displacement mechanism involving the participation of two acidic amino acid residues positioned opposite each other across the active site cleft or tunnel | Cellulomonas fimi | ? | - |
? |
EC Number | Subunits | Comment | Organism |
---|---|---|---|
3.2.1.4 | ? | x * 46700, CenA | Cellulomonas fimi |
EC Number | Synonyms | Comment | Organism |
---|---|---|---|
3.2.1.4 | cellulase A | - |
Cellulomonas fimi |
3.2.1.4 | CenA | - |
Cellulomonas fimi |
3.2.1.4 | More | cellulase A is an inverting glycoside hydrolase and a member of family 6 of the CAZy database classification system | Cellulomonas fimi |
EC Number | Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|---|
3.2.1.4 | 37 | - |
assay at | Cellulomonas fimi |
EC Number | Turnover Number Minimum [1/s] | Turnover Number Maximum [1/s] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|---|
3.2.1.4 | 0.0013 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D392A | Cellulomonas fimi | |
3.2.1.4 | 0.0051 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D392S | Cellulomonas fimi | |
3.2.1.4 | 0.0059 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D392N | Cellulomonas fimi | |
3.2.1.4 | 0.0073 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D252C | Cellulomonas fimi | |
3.2.1.4 | 0.014 | - |
carboxymethyl cellulose | pH 7.0, 37°C, oxidized mutant D252C | Cellulomonas fimi | |
3.2.1.4 | 0.0146 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D216C | Cellulomonas fimi | |
3.2.1.4 | 0.029 | - |
carboxymethyl cellulose | pH 7.0, 37°C, oxidized mutant D216C | Cellulomonas fimi | |
3.2.1.4 | 0.227 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D216N | Cellulomonas fimi | |
3.2.1.4 | 0.994 | - |
carboxymethyl cellulose | pH 7.0, 37°C, mutant D392C | Cellulomonas fimi | |
3.2.1.4 | 3.57 | - |
carboxymethyl cellulose | pH 7.0, 37°C, oxidized mutant D392C | Cellulomonas fimi | |
3.2.1.4 | 5.81 | - |
carboxymethyl cellulose | pH 7.0, 37°C, H2O2-treated wild-type CenA | Cellulomonas fimi | |
3.2.1.4 | 5.92 | - |
carboxymethyl cellulose | pH 7.0, 37°C, wild-type CenA | Cellulomonas fimi |
EC Number | pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|---|
3.2.1.4 | 7 | 7.5 | wild-type CenA | Cellulomonas fimi |
EC Number | pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|---|
3.2.1.4 | 4 | 9 | profiles of wild-type and mutant D392C and D216N enzymes, overview | Cellulomonas fimi |
EC Number | General Information | Comment | Organism |
---|---|---|---|
3.2.1.4 | metabolism | the complete solubilization of crystalline cellulose requires the concerted and synergistic action of three classes of glycoside hydrolases, cellulase, endoglucanase, EC 3.2.1.4, cellobiohydrolase, EC 3.2.1.74, and beta-glucosidase, EC 3.2.1.21 | Cellulomonas fimi |