Activating Compound | Comment | Organism | Structure |
---|---|---|---|
2-mercaptoethanol | activates 91.2% at 5 mM | Arthrobacter agilis | |
FeCl3 | activates 152.3% at 1 mM | Arthrobacter agilis |
Cloned (Comment) | Organism |
---|---|
gene amy, DNA and amino acid sequence determination and analysis, sequence comparisons, recombinant expression of His6-tagged enzyme in Escherichia coli strain BL21(DE3) | Arthrobacter agilis |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
ammonium persulfate | 54% inhibition at 5 mM | Arthrobacter agilis | |
Ca2+ | 7% inhibition at 1 mM | Arthrobacter agilis | |
Co2+ | 63% inhibition at 1 mM | Arthrobacter agilis | |
Mg2+ | 22% inhibition at 1 mM | Arthrobacter agilis | |
SDS | 39% inhibition at 10% | Arthrobacter agilis | |
Triton X-100 | 45% inhibition at 10% | Arthrobacter agilis | |
Urea | 64.5% inhibition at 1% | Arthrobacter agilis | |
Zn2+ | 36% inhibition at 1 mM | Arthrobacter agilis |
Metals/Ions | Comment | Organism | Structure |
---|---|---|---|
Fe3+ | activates 152% at 1 mM | Arthrobacter agilis | |
K+ | activates 10% at 1 mM | Arthrobacter agilis | |
Na+ | activates 15% at 1 mM | Arthrobacter agilis | |
PMSF | activates 12% at 1 mM | Arthrobacter agilis |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Arthrobacter agilis | alpha-amylases are endo-acting enzymes that randomly cleave the 1,4-alpha-D-glucosidic linkages between adjacent glucose units in linear amylose chains. As a result, they generate dextrins and smaller polymers composed of glucose units | ? | - |
? | |
additional information | Arthrobacter agilis PAMC 27388 | alpha-amylases are endo-acting enzymes that randomly cleave the 1,4-alpha-D-glucosidic linkages between adjacent glucose units in linear amylose chains. As a result, they generate dextrins and smaller polymers composed of glucose units | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Arthrobacter agilis | A0A1D9CEW3 | isolated from seawater in Antarctica King George Island (South Shetland Islands) | - |
Arthrobacter agilis PAMC 27388 | A0A1D9CEW3 | isolated from seawater in Antarctica King George Island (South Shetland Islands) | - |
Purification (Comment) | Organism |
---|---|
recombinant His6-tagged enzyme from Escherichia coli strain BL21(DE3) by nickel affinity chromatography and dialysis | Arthrobacter agilis |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
27.96 | - |
purified recombinant enzyme, pH 7.0, 25°C, substrate soluble starch | Arthrobacter agilis |
60 | - |
purified recombinant enzyme, pH 3.0, 25°C, substrate soluble starch | Arthrobacter agilis |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
hydrolyzed starch + H2O | 0.5-2.0% soluble starch | Arthrobacter agilis | maltose | - |
? | |
hydrolyzed starch + H2O | 0.5-2.0% soluble starch | Arthrobacter agilis PAMC 27388 | maltose | - |
? | |
maltotetraose + H2O | - |
Arthrobacter agilis | 2 maltose | - |
? | |
maltotetraose + H2O | - |
Arthrobacter agilis PAMC 27388 | 2 maltose | - |
? | |
maltotriose + H2O | - |
Arthrobacter agilis | maltose + D-glucose | - |
? | |
maltotriose + H2O | - |
Arthrobacter agilis PAMC 27388 | maltose + D-glucose | - |
? | |
additional information | alpha-amylases are endo-acting enzymes that randomly cleave the 1,4-alpha-D-glucosidic linkages between adjacent glucose units in linear amylose chains. As a result, they generate dextrins and smaller polymers composed of glucose units | Arthrobacter agilis | ? | - |
? | |
additional information | recombinant Arthrobacter agilis alpha-amylase hydrolyzed starch, maltotetraose, and maltotriose, produces maltose as the major end product | Arthrobacter agilis | ? | - |
? | |
additional information | alpha-amylases are endo-acting enzymes that randomly cleave the 1,4-alpha-D-glucosidic linkages between adjacent glucose units in linear amylose chains. As a result, they generate dextrins and smaller polymers composed of glucose units | Arthrobacter agilis PAMC 27388 | ? | - |
? | |
additional information | recombinant Arthrobacter agilis alpha-amylase hydrolyzed starch, maltotetraose, and maltotriose, produces maltose as the major end product | Arthrobacter agilis PAMC 27388 | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
? | x * 80000, recombinant His6-tagged enzyme, SDS-PAGE, x * 79610, sequence calculation | Arthrobacter agilis |
More | the alpha-amylase has an alpha-1,4-glucan-maltose-1-phosphate maltosyltransferase domain (IPR021828) (aa 20-206) and a GH13 family domain (aa 199-574) of glycoside hydrolase (IPR015902) | Arthrobacter agilis |
Synonyms | Comment | Organism |
---|---|---|
1,4-alpha-D-glucan-glucanohydrolase | - |
Arthrobacter agilis |
Amy | - |
Arthrobacter agilis |
cold-adapted alpha-amylase | - |
Arthrobacter agilis |
Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
---|---|---|---|
30 | - |
recombinant enzyme | Arthrobacter agilis |
Temperature Minimum [°C] | Temperature Maximum [°C] | Comment | Organism |
---|---|---|---|
30 | 60 | specific activities of 32, 30, 29, and 30 U/mg at 30, 40, 50, and 60°C, respectively | Arthrobacter agilis |
Temperature Stability Minimum [°C] | Temperature Stability Maximum [°C] | Comment | Organism |
---|---|---|---|
10 | 60 | recombinant enzyme, highly stable at | Arthrobacter agilis |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
3 | - |
recombinant enzyme | Arthrobacter agilis |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
2 | 10 | the alpha-amylase exhibits optimal activity of 60 U/mg at pH 3.0 and retains high specific activity of 50 U/mg at pH 2.0. Enzyme activity declines sharply at pH values above pH 3.0, retaining only about 48-27 U/mg between pH 4.0 and 10.0, respectively | Arthrobacter agilis |
pH Stability | pH Stability Maximum | Comment | Organism |
---|---|---|---|
4 | 9 | recombinant enzyme, retains over 60% of its activity between pH 4.0 and pH 9.0 after incubation for 24 h | Arthrobacter agilis |
Organism | Comment | pI Value Maximum | pI Value |
---|---|---|---|
Arthrobacter agilis | sequence calculation | - |
9.11 |
General Information | Comment | Organism |
---|---|---|
evolution | the alpha-amylase has an alpha-1,4-glucan-maltose-1-phosphate maltosyltransferase domain (IPR021828) (aa 20-206) and a GH13 family domain (aa 199-574) of glycoside hydrolase (IPR015902) | Arthrobacter agilis |