Enzymes
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Reaction participants Show >> << Hide
- Name help_outline ITP Identifier CHEBI:61402 Charge -4 Formula C10H11N4O14P3 InChIKeyhelp_outline HAEJPQIATWHALX-KQYNXXCUSA-J SMILEShelp_outline O[C@@H]1[C@@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)O[C@H]([C@@H]1O)n1cnc2c1nc[nH]c2=O 2D coordinates Mol file for the small molecule Search links Involved in 11 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline pyruvate Identifier CHEBI:15361 (Beilstein: 3587721; CAS: 57-60-3) help_outline Charge -1 Formula C3H3O3 InChIKeyhelp_outline LCTONWCANYUPML-UHFFFAOYSA-M SMILEShelp_outline CC(=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 215 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 9,431 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline IDP Identifier CHEBI:58280 (Beilstein: 5786306) help_outline Charge -3 Formula C10H11N4O11P2 InChIKeyhelp_outline JPXZQMKKFWMMGK-KQYNXXCUSA-K SMILEShelp_outline O[C@@H]1[C@@H](COP([O-])(=O)OP([O-])([O-])=O)O[C@H]([C@@H]1O)n1cnc2c1nc[nH]c2=O 2D coordinates Mol file for the small molecule Search links Involved in 9 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline phosphoenolpyruvate Identifier CHEBI:58702 (Beilstein: 3951723) help_outline Charge -3 Formula C3H2O6P InChIKeyhelp_outline DTBNBXWJWCWCIK-UHFFFAOYSA-K SMILEShelp_outline [O-]C(=O)C(=C)OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 39 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:56956 | RHEA:56957 | RHEA:56958 | RHEA:56959 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Related reactions help_outline
More general form(s) of this reaction
Publications
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Purification and characterization of cytosolic pyruvate kinase from banana fruit.
Turner W.L., Plaxton W.C.
Cytosolic pyruvate kinase (PK(c)) from ripened banana (Musa cavendishii L.) fruits has been purified 543-fold to electrophoretic homogeneity and a final specific activity of 59.7 micromol of pyruvate produced/min per mg of protein. SDS/PAGE and gel-filtration FPLC of the final preparation indicate ... >> More
Cytosolic pyruvate kinase (PK(c)) from ripened banana (Musa cavendishii L.) fruits has been purified 543-fold to electrophoretic homogeneity and a final specific activity of 59.7 micromol of pyruvate produced/min per mg of protein. SDS/PAGE and gel-filtration FPLC of the final preparation indicated that this enzyme exists as a 240 kDa homotetramer composed of subunits of 57 kDa. Although the enzyme displayed a pH optimum of 6.9, optimal efficiency in substrate utilization [in terms of V(max)/K(m) for phosphoenolpyruvate (PEP) or ADP] was equivalent at pH 6.9 and 7.5. PK(c) activity was absolutely dependent upon the presence of a bivalent and a univalent cation, with Mg(2+) and K(+) respectively fulfilling this requirement. Hyperbolic saturation kinetics were observed for the binding of PEP, ADP, Mg(2+) and K(+) (K(m) values of 0.098, 0.12, 0.27 and 0.91 mM respectively). Although the enzyme utilized UDP, IDP, GDP and CDP as alternative nucleotides, ADP was the preferred substrate. L-Glutamate and MgATP were the most effective inhibitors, whereas L-aspartate functioned as an activator by reversing the inhibition of PK(c) by L-glutamate. The allosteric features of banana PK(c) are compared with those of banana PEP carboxylase [Law and Plaxton (1995) Biochem. J. 307, 807-816]. A model is presented which highlights the roles of cytosolic pH, MgATP, L-glutamate and L-aspartate in the co-ordinate control of the PEP branchpoint in ripening bananas. << Less
Biochem J 352:875-882(2000) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.
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Enzymic synthesis of guanosine and cytidine triphosphates: a note on the nucleotide specificity of the pyruvate phosphokinase reaction.
STROMINGER J.L.
Biochim Biophys Acta 16:616-618(1955) [PubMed] [EuropePMC]
This publication is cited by 5 other entries.
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Fluorokinase and pyruvic kinase.
TIETZ A., OCHOA S.
Arch Biochem Biophys 78:477-493(1958) [PubMed] [EuropePMC]
This publication is cited by 5 other entries.
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Enzymatic phosphorylation of adenosine and 2,6-diaminopurine riboside.
KORNBERG A., PRICER W.E. Jr.
J Biol Chem 193:481-495(1951) [PubMed] [EuropePMC]
This publication is cited by 6 other entries.