Enzymes
| UniProtKB help_outline | 1 proteins |
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- Name help_outline (R)-glycerate Identifier CHEBI:16659 Charge -1 Formula C3H5O4 InChIKeyhelp_outline RBNPOMFGQQGHHO-UWTATZPHSA-M SMILEShelp_outline OC[C@@H](O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 22 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 1,284 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline (2R)-2-phosphoglycerate Identifier CHEBI:58289 Charge -3 Formula C3H4O7P InChIKeyhelp_outline GXIURPTVHJPJLF-UWTATZPHSA-K SMILEShelp_outline OC[C@@H](OP([O-])([O-])=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 6 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 841 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 9,521 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:27377 | RHEA:27378 | RHEA:27379 | RHEA:27380 | |
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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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A MOFRL family glycerate kinase from the thermophilic crenarchaeon, Sulfolobus tokodaii, with unique enzymatic properties.
Liu B., Wu L., Liu T., Hong Y., Shen Y., Ni J.
A glycerate kinase gene (ST2037) from the hyperthermophilic crenarchaeon Sulfolobus tokodaii was cloned and expressed in Escherichia coli. The purified homodimeric protein (45 kDa) specifically catalyzed the formation of 2-phosphoglycerate with D-glycerate as substrate. The thermostable enzyme dis ... >> More
A glycerate kinase gene (ST2037) from the hyperthermophilic crenarchaeon Sulfolobus tokodaii was cloned and expressed in Escherichia coli. The purified homodimeric protein (45 kDa) specifically catalyzed the formation of 2-phosphoglycerate with D-glycerate as substrate. The thermostable enzyme displayed maximum activity (over 20 min) at 90 degrees C and pH 4.5. The maximal activity was in the presence of Co(2+). The MOFRL family glycerate kinase used AMP as phosphate donor with maximal activity towards GTP. These characteristics of the enzyme suggested its potential in the catalytic production of 2-phosphoglycerate. << Less
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A unique highly thermostable 2-phosphoglycerate forming glycerate kinase from the hyperthermophilic archaeon Pyrococcus horikoshii: gene cloning, expression and characterization.
Liu B., Hong Y., Wu L., Li Z., Ni J., Sheng D., Shen Y.
A glycerate kinase (GK) gene (PH0495) from the hyperthermophilic archaeon Pyrococcus horikoshii, was cloned and expressed in Escherichia coli. The recombinant protein was purified to homogeneity by affinity chromatography and ion exchange chromatography. The enzyme was likely a homodimer based on ... >> More
A glycerate kinase (GK) gene (PH0495) from the hyperthermophilic archaeon Pyrococcus horikoshii, was cloned and expressed in Escherichia coli. The recombinant protein was purified to homogeneity by affinity chromatography and ion exchange chromatography. The enzyme was likely a homodimer based on SDS-PAGE (47 kDa) and gel filtration chromatography (100 kDa) analysis. A radioisotope-labeling examination method was initially used for the enzymatic activity detection, and the enzyme (GK(ph)) was found to catalyze the formation of 2-phosphoglycerate using D: -glycerate as the substrate. The enzyme exhibited unique phosphoryl donor specificity with maximal activity towards pyrophosphate. The temperature and pH optima of the enzyme were 45 degrees C and 7.0, respectively, and about half of the maximal activity remained at 100 degrees C. The enzyme was highly thermostable with almost no loss of activity at 90 degrees C for 12 h. Based on sequence alignment and structural comparison it was assigned to group I of the trichotomy of GKs. << Less
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Characterization of glycerate kinase (2-phosphoglycerate forming), a key enzyme of the nonphosphorylative Entner-Doudoroff pathway, from the thermoacidophilic euryarchaeon Picrophilus torridus.
Reher M., Bott M., Schonheit P.
Picrophilus torridus has been shown to degrade glucose via a nonphosphorylative Entner-Doudoroff (ED) pathway. Here we report the characterization of a key enzyme of this pathway, glycerate kinase (2-phosphoglycerate forming). The enzyme was purified 5,100-fold to homogeneity. The 95 kDa homodimer ... >> More
Picrophilus torridus has been shown to degrade glucose via a nonphosphorylative Entner-Doudoroff (ED) pathway. Here we report the characterization of a key enzyme of this pathway, glycerate kinase (2-phosphoglycerate forming). The enzyme was purified 5,100-fold to homogeneity. The 95 kDa homodimeric protein catalyzed the ATP-dependent phosphorylation of glycerate specifically to 2-phosphoglycerate. The enzyme showed highest activity at 60 degrees C and pH 7.3, with ATP as phosphoryl donor and Mg(2+) as divalent cation. By MALDI-TOF analysis, ORF Pto1442 was identified in the genome of P. torridus as the encoding gene, designated gck. Homologs with high sequence identity were identified in the genomes of the archaea Thermoplasma and Sulfolobus spp. and Thermoproteus tenax, for which the operation of nonphosphorylative ED pathways, involving 2-phosphoglycerate forming glycerate kinases, has been proposed. << Less
FEMS Microbiol. Lett. 259:113-119(2006) [PubMed] [EuropePMC]