Literature summary extracted from
van der Kaaij, R.M.; Yuan, X.L.; Franken, A.; Ram, A.F.; Punt, P.J.; van der Maarel, M.J.; Dijkhuizen, L.
Two novel, putatively cell wall-associated and glycosylphosphatidylinositol-anchored alpha-glucanotransferase enzymes of Aspergillus niger (2007), Eukaryot. Cell, 6, 1178-1188.
Cloned(Commentary)
EC Number |
Cloned (Comment) |
Organism |
---|
2.4.1.25 |
genes agtA and agtB, DNA and amino acid sequence determination and analysis, phylogenetic tree, overexpression in Aspergillus niger strain MGG029, subcloning in Escherichia coli |
Aspergillus niger |
Protein Variants
EC Number |
Protein Variants |
Comment |
Organism |
---|
2.4.1.25 |
additional information |
an agtA knockout of Aspergillus niger shows an increased susceptibility towards the cell wall-disrupting compound, phenotypic characterization of CFW hypersensitive DELTAagtA strain and AgtA/AgtB overexpression strains, overview |
Aspergillus niger |
Localization
EC Number |
Localization |
Comment |
Organism |
GeneOntology No. |
Textmining |
---|
2.4.1.25 |
cell wall |
associated |
Aspergillus niger |
5618 |
- |
Organism
EC Number |
Organism |
UniProt |
Comment |
Textmining |
---|
2.4.1.25 |
Aspergillus niger |
- |
strains CBS 513.88, NRRL3122, and N402, isozymes AgtA and AgtB encoded by genes agtA and agtB |
- |
Posttranslational Modification
EC Number |
Posttranslational Modification |
Comment |
Organism |
---|
2.4.1.25 |
glycolipoprotein |
the enzyme is cell wall-associated via glycosylphosphatidylinositol anchoring |
Aspergillus niger |
Substrates and Products (Substrate)
EC Number |
Substrates |
Comment Substrates |
Organism |
Products |
Comment (Products) |
Rev. |
Reac. |
---|
2.4.1.25 |
additional information |
both isozymes AgtA and AgtB show transglycosylation activity on donor substrates with alpha-(1,4)-glycosidic bonds and at least five anhydroglucose units forming alpha-(1,4)-glycosidic bonds. Their reaction products reach a degree of polymerization of at least 30. Maltose and larger maltooligosaccharides are the most efficient acceptor substrates, although AgtA also uses small nigerooligosaccharides containing alpha-(1,3)-glycosidic bonds as acceptor substrate, reaction products, overview. The enzyme also shows hydrolyzing activity with potato starch |
Aspergillus niger |
? |
- |
? |
|
Synonyms
EC Number |
Synonyms |
Comment |
Organism |
---|
2.4.1.25 |
AgtA |
- |
Aspergillus niger |
2.4.1.25 |
AgtB |
- |
Aspergillus niger |
2.4.1.25 |
More |
the enzyme belongs to the alpha-amylase family |
Aspergillus niger |
Temperature Optimum [°C]
EC Number |
Temperature Optimum [°C] |
Temperature Optimum Maximum [°C] |
Comment |
Organism |
---|
2.4.1.25 |
37 |
- |
assay at |
Aspergillus niger |
pH Optimum
EC Number |
pH Optimum Minimum |
pH Optimum Maximum |
Comment |
Organism |
---|
2.4.1.25 |
5.5 |
- |
assay at |
Aspergillus niger |
pH Range
EC Number |
pH Minimum |
pH Maximum |
Comment |
Organism |
---|
2.4.1.25 |
4.2 |
8 |
- |
Aspergillus niger |