Cloned (Comment) | Organism |
---|---|
DPE2, phylogenetic analysis | Arabidopsis thaliana |
Protein Variants | Comment | Organism |
---|---|---|
additional information | the glycosyl hydrolase domain alone provides disproportionating activity with a much higher affinity for short maltodextrins than the complete wild-type enzyme, while absence of the carbohydrate binding modules completely abolishes activity with large complex carbohydrates, reflecting the presumed function of DPE2 in vivo | Arabidopsis thaliana |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
cytosol | - |
Arabidopsis thaliana | 5829 | - |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Arabidopsis thaliana | 4-alpha-glucanotransferase is essential for maltose metabolism in photosynthetic leaves | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Arabidopsis thaliana | Q8RXD9 | - |
- |
Reaction | Comment | Organism | Reaction ID |
---|---|---|---|
maltononaose + maltotriose = maltoundecaose + D-glucose | catalytic mechanism and domain structure and function | Arabidopsis thaliana |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | - |
Arabidopsis thaliana | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | 4-alpha-glucanotransferase is essential for maltose metabolism in photosynthetic leaves | Arabidopsis thaliana | ? | - |
? | |
additional information | DPE2 transfers the non-reducing glucosyl unit from maltose to glycogen by a ping-pong mechanism. The forward reaction, i.e. consumption of maltose, is specific for the beta-anomer of maltose, while the reverse reaction, i.e. production of maltose, is not stereospecific for the acceptor glucose | Arabidopsis thaliana | ? | - |
? |
Subunits | Comment | Organism |
---|---|---|
More | DPE2 is a modular protein consisting of a family 77 glycosyl hydrolase domain, similar to DPE1, but unlike DPE1 the domain is interrupted by an insertion of about 150 amino acids as well as an N-terminal extension that consists of two carbohydrate binding modules, domain structure and functiosn, overview | Arabidopsis thaliana |
Synonyms | Comment | Organism |
---|---|---|
DPE2 | - |
Arabidopsis thaliana |