A0A7S4QIE5 · A0A7S4QIE5_9DINO
- ProteinPyrophosphate--fructose 6-phosphate 1-phosphotransferase
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids1194 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Catalyzes the phosphorylation of D-fructose 6-phosphate, the first committing step of glycolysis. Uses inorganic phosphate (PPi) as phosphoryl donor instead of ATP like common ATP-dependent phosphofructokinases (ATP-PFKs), which renders the reaction reversible, and can thus function both in glycolysis and gluconeogenesis. Consistently, PPi-PFK can replace the enzymes of both the forward (ATP-PFK) and reverse (fructose-bisphosphatase (FBPase)) reactions.
Catalytic activity
- beta-D-fructose 6-phosphate + diphosphate = beta-D-fructose 1,6-bisphosphate + H+ + phosphate
Cofactor
Activity regulation
Non-allosteric.
Pathway
Carbohydrate degradation; glycolysis; D-glyceraldehyde 3-phosphate and glycerone phosphate from D-glucose: step 3/4.
Features
Showing features for binding site, site, active site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 95 | diphosphate (UniProtKB | ChEBI) | ||||
Sequence: G | ||||||
Binding site | 189 | Mg2+ (UniProtKB | ChEBI); catalytic | ||||
Sequence: D | ||||||
Site | 190 | Important for catalytic activity and substrate specificity; stabilizes the transition state when the phosphoryl donor is PPi; prevents ATP from binding by mimicking the alpha-phosphate group of ATP | ||||
Sequence: D | ||||||
Site | 216 | Important for catalytic activity; stabilizes the transition state when the phosphoryl donor is PPi | ||||
Sequence: K | ||||||
Binding site | 217-219 | substrate | ||||
Sequence: TID | ||||||
Active site | 219 | Proton acceptor | ||||
Sequence: D | ||||||
Binding site | 257-258 | substrate; ligand shared between dimeric partners | ||||
Sequence: KY | ||||||
Binding site | 265-267 | substrate | ||||
Sequence: MGR | ||||||
Binding site | 326 | substrate | ||||
Sequence: E | ||||||
Binding site | 432-435 | substrate | ||||
Sequence: YEGR |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Molecular Function | 6-phosphofructokinase activity | |
Molecular Function | ATP binding | |
Molecular Function | diphosphate-fructose-6-phosphate 1-phosphotransferase activity | |
Molecular Function | metal ion binding | |
Biological Process | fructose 6-phosphate metabolic process | |
Biological Process | response to glucose |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended namePyrophosphate--fructose 6-phosphate 1-phosphotransferase
- EC number
- Alternative names
Gene names
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Sar > Alveolata > Dinophyceae > Gonyaulacales > Pyrocystaceae > Alexandrium
Accessions
- Primary accessionA0A7S4QIE5
Subcellular Location
Interaction
Subunit
Homodimer or monomer.
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 87-457 | Phosphofructokinase | ||||
Sequence: KVGVVLSGGQAPGGHNVIAGIFDSVKEWHPDSTMIGFLDGPHGIFSGNFVEITGEIMDGFRNTGGFDMLGSGRHKIETEEQFQNSMAVCKAIDLDGLVVIGGDDSNTNGAVLAEYFKANGCKTRVVGAPKTIDGDLKCPPHIPVSFGFDTACKTFAALVGNVAVDALSAQKYYHLVRLMGRSASNIALEVALLTRPNVCLLGEEVSRDKKSLKDITVDLADMIEERSKMGKDYGVIVLPEGLIEFIPEFNSLISEINDKISSPDVQPTEEAVMAALSPENADSFRYLPPFIRAQLLLDRDPHGNVQVAKIETEKLLAATVVAELEERRKKGSYTGHFSPQFHSYGYEGRAGLPTVFDAAYCYALGATAANL | ||||||
Domain | 662-908 | Phosphofructokinase | ||||
Sequence: VGVVFCGRQAPGCHDLVCGLVDMLHNSGNKVIGFVGGTQGLFTKQCVGLTPELCKAYAGTGGLELLGRTVDRIGSEEETAKVAKACQDLDLAGLVLVGGARTNTDAAYLAESFRSKGVKTAVVGVPCGIEGSMVNEFVEASLGFDSAAKTMAQLVGNTAVDGSSARKYYYFMKLMDGSATGGKLPTSHVALEAALQTKPNLLLLTEEVDEKRLSLREVVKEVADVVAQRAKDGKNFGTILVAEGLLA |
Sequence similarities
Belongs to the phosphofructokinase type A (PFKA) family. PPi-dependent PFK group II subfamily. Clade 'Long' sub-subfamily.
Family and domain databases
Sequence
- Sequence statusComplete
- Length1,194
- Mass (Da)129,709
- Last updated2021-06-02 v1
- Checksum7E4689B2BCBF2CB7