Enzymes
| UniProtKB help_outline | 27 proteins |
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- Name help_outline β-D-fructose 6-phosphate Identifier CHEBI:57634 (Beilstein: 6422468) help_outline Charge -2 Formula C6H11O9P InChIKeyhelp_outline BGWGXPAPYGQALX-ARQDHWQXSA-L SMILEShelp_outline OC[C@@]1(O)O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 18 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ATP Identifier CHEBI:30616 (Beilstein: 3581767) help_outline Charge -4 Formula C10H12N5O13P3 InChIKeyhelp_outline ZKHQWZAMYRWXGA-KQYNXXCUSA-J SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,301 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline β-D-fructose 2,6-bisphosphate Identifier CHEBI:58579 (Beilstein: 4213776) help_outline Charge -4 Formula C6H10O12P2 InChIKeyhelp_outline YXWOAJXNVLXPMU-ZXXMMSQZSA-J SMILEShelp_outline OC[C@]1(O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@@H]1O)OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ADP Identifier CHEBI:456216 (Beilstein: 3783669) help_outline Charge -3 Formula C10H12N5O10P2 InChIKeyhelp_outline XTWYTFMLZFPYCI-KQYNXXCUSA-K SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 854 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:15653 | RHEA:15654 | RHEA:15655 | RHEA:15656 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Phosphofructokinase 2: the enzyme that forms fructose 2,6-bisphosphate from fructose 6-phosphate and ATP.
Van Schaftingen E., Hers H.G.
Biochem Biophys Res Commun 101:1078-1084(1981) [PubMed] [EuropePMC]
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N-terminal truncation affects the kinetics and structure of fructose-6-phosphate 2-kinase/fructose-2,6-bisphosphatase from Arabidopsis thaliana.
Villadsen D., Nielsen T.H.
The enzyme fructose-6-phosphate 2-kinase (F6P,2K; 6-phosphofructo-2-kinase)/fructose-2,6-bisphosphatase (F26BPase) catalyses the formation and degradation of the regulatory metabolite fructose 2,6-bisphosphate. A cDNA encoding the bifunctional plant enzyme isolated from Arabidopsis thaliana (AtF2K ... >> More
The enzyme fructose-6-phosphate 2-kinase (F6P,2K; 6-phosphofructo-2-kinase)/fructose-2,6-bisphosphatase (F26BPase) catalyses the formation and degradation of the regulatory metabolite fructose 2,6-bisphosphate. A cDNA encoding the bifunctional plant enzyme isolated from Arabidopsis thaliana (AtF2KP) was expressed in yeast, and the substrate affinities and allosteric properties of the affinity-purified enzyme were characterized. In addition to the known regulators 3-phosphoglycerate, dihydroxyacetone phosphate, fructose 6-phosphate and P(i), several metabolites were identified as important new effectors. PP(i), phosphoenolpyruvate and 2-phosphoglycerate strongly inhibited F6P,2K activity, whereas fructose 1,6-bisphosphate and 6-phosphogluconate inhibited F26BPase activity. Furthermore, pyruvate was an activator of F6P,2K and an inhibitor of F26BPase. Both kinase and phosphatase activities were rapidly inactivated by mild heat treatment (42 degrees C, 10 min), but the presence of phosphate protected both enzyme activities from inactivation. In addition to the catalytic regions, the Arabidopsis enzyme comprises a 345-amino-acid N-terminus of unknown function. The role of this region was examined by the expression of a series of N-terminally truncated enzymes. The full-length and truncated enzymes were analysed by gel-filtration chromatography. The full-length enzyme was eluted as a homotetramer, whereas the truncated enzymes were eluted as monomers. Deletion of the N-terminus decreased the kinase/phosphatase activity ratio by 4-fold, and decreased the affinity for the substrate fructose 6-phosphate. The data show that the N-terminus is important both for subunit assembly and for defining the kinetic properties of the enzyme. << Less
Biochem. J. 359:591-597(2001) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.