A0A6A4PKU8 · A0A6A4PKU8_LUPAL
- ProteinPyrophosphate--fructose 6-phosphate 1-phosphotransferase subunit beta
- GenePFP-BETA
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids570 (go to sequence)
- Protein existenceInferred from homology
- Annotation score4/5
Function
function
Catalytic subunit of pyrophosphate--fructose 6-phosphate 1-phosphotransferase. 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.
Catalytic activity
- beta-D-fructose 6-phosphate + diphosphate = beta-D-fructose 1,6-bisphosphate + H+ + phosphate
Cofactor
Activity regulation
Allosterically activated by fructose 2,6-bisphosphate.
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 | 108 | diphosphate (UniProtKB | ChEBI) | ||||
Sequence: G | ||||||
Binding site | 202 | Mg2+ (UniProtKB | ChEBI); catalytic | ||||
Sequence: D | ||||||
Site | 203 | 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 | 229 | Important for catalytic activity; stabilizes the transition state when the phosphoryl donor is PPi | ||||
Sequence: K | ||||||
Binding site | 230-232 | substrate | ||||
Sequence: TID | ||||||
Active site | 232 | Proton acceptor | ||||
Sequence: D | ||||||
Binding site | 269-270 | substrate; ligand shared between dimeric partners | ||||
Sequence: KY | ||||||
Binding site | 277-279 | substrate | ||||
Sequence: MGR | ||||||
Binding site | 338 | substrate | ||||
Sequence: E | ||||||
Binding site | 443-446 | 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 | photosynthesis | |
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 subunit beta
- EC number
- Short namesPFP
- Alternative names
Gene names
Organism names
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Fabales > Fabaceae > Papilionoideae > 50 kb inversion clade > genistoids sensu lato > core genistoids > Genisteae > Lupinus
Accessions
- Primary accessionA0A6A4PKU8
Proteomes
Subcellular Location
Interaction
Subunit
Tetramer of two alpha (regulatory) and two beta (catalytic) chains.
Structure
Family & Domains
Features
Showing features for region, domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Region | 1-21 | Disordered | ||||
Sequence: MPQRQQKKLKMAPSFPTNGGF | ||||||
Domain | 100-465 | Phosphofructokinase | ||||
Sequence: KIGVVLSGGQAPGGHNVIAGIFDYMQDLAKGSILYGFRGGPAGIMNCKYLELTSHYIYPYRNQGGFDIIRSGRDKIETPDQFKQAEETVQKLDLDGLVVIGGDDSNTNACLLAEYFRSKNIKTHVIGCPKTIDGDLKCKEVPTSFGFDTACKIYAEMIGNVMIDARSTGKYYHFVRLMGRAASHITLECALQTHPNITIIGEEVAAKKLTLKNVTDYIVDIICKRAEVNYRYGVILIPEGLIDFIPEAQHLIVELNEIMASCSVDEGGLWKKKLTDQSLKLFEFLPQAIKEQLMLERDPHGNVQVAKIETEKMLIQMVETELEKRKHEGTYQAVFRGQSHFFGYEGRCGLPTNFDSTYCYALGYGA |
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
- Length570
- Mass (Da)62,964
- Last updated2020-06-17 v1
- Checksum93C5E20639968082
Keywords
- Technical term