Enzymes
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- Name help_outline ADP-α-D-glucose Identifier CHEBI:57498 Charge -2 Formula C16H23N5O15P2 InChIKeyhelp_outline WFPZSXYXPSUOPY-ROYWQJLOSA-L SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)O[C@H]2O[C@H](CO)[C@@H](O)[C@H](O)[C@H]2O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 10 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline D-glucose 6-phosphate Identifier CHEBI:61548 Charge -2 Formula C6H11O9P InChIKeyhelp_outline NBSCHQHZLSJFNQ-GASJEMHNSA-L SMILEShelp_outline OC1O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 32 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 α,α-trehalose 6-phosphate Identifier CHEBI:58429 (Beilstein: 3744918) help_outline Charge -2 Formula C12H21O14P InChIKeyhelp_outline LABSPYBHMPDTEL-LIZSDCNHSA-L SMILEShelp_outline OC[C@H]1O[C@H](O[C@H]2O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H](O)[C@H]2O)[C@H](O)[C@@H](O)[C@@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 10 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
Cross-references
| RHEA:53880 | RHEA:53881 | RHEA:53882 | RHEA:53883 | |
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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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Allosteric regulation of the partitioning of glucose-1-phosphate between glycogen and trehalose biosynthesis in Mycobacterium tuberculosis.
Asencion Diez M.D., Demonte A.M., Syson K., Arias D.G., Gorelik A., Guerrero S.A., Bornemann S., Iglesias A.A.
<h4>Background</h4>Mycobacterium tuberculosis is a pathogenic prokaryote adapted to survive in hostile environments. In this organism and other Gram-positive actinobacteria, the metabolic pathways of glycogen and trehalose are interconnected.<h4>Results</h4>In this work we show the production, pur ... >> More
<h4>Background</h4>Mycobacterium tuberculosis is a pathogenic prokaryote adapted to survive in hostile environments. In this organism and other Gram-positive actinobacteria, the metabolic pathways of glycogen and trehalose are interconnected.<h4>Results</h4>In this work we show the production, purification and characterization of recombinant enzymes involved in the partitioning of glucose-1-phosphate between glycogen and trehalose in M. tuberculosis H37Rv, namely: ADP-glucose pyrophosphorylase, glycogen synthase, UDP-glucose pyrophosphorylase and trehalose-6-phosphate synthase. The substrate specificity, kinetic parameters and allosteric regulation of each enzyme were determined. ADP-glucose pyrophosphorylase was highly specific for ADP-glucose while trehalose-6-phosphate synthase used not only ADP-glucose but also UDP-glucose, albeit to a lesser extent. ADP-glucose pyrophosphorylase was allosterically activated primarily by phosphoenolpyruvate and glucose-6-phosphate, while the activity of trehalose-6-phosphate synthase was increased up to 2-fold by fructose-6-phosphate. None of the other two enzymes tested exhibited allosteric regulation.<h4>Conclusions</h4>Results give information about how the glucose-1-phosphate/ADP-glucose node is controlled after kinetic and regulatory properties of key enzymes for mycobacteria metabolism.<h4>General significance</h4>This work increases our understanding of oligo and polysaccharides metabolism in M. tuberculosis and reinforces the importance of the interconnection between glycogen and trehalose biosynthesis in this human pathogen. << Less
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Trehalose-phosphate synthase of Mycobacterium tuberculosis. Cloning, expression and properties of the recombinant enzyme.
Pan Y.T., Carroll J.D., Elbein A.D.
The trehalose-phosphate synthase (TPS) of Mycobacterium smegmatis was previously purified to apparent homogeneity and several peptides from the 58 kDa protein were sequenced. Based on that sequence information, the gene for TPS was identified in the Mycobacterium tuberculosis genome, and the gene ... >> More
The trehalose-phosphate synthase (TPS) of Mycobacterium smegmatis was previously purified to apparent homogeneity and several peptides from the 58 kDa protein were sequenced. Based on that sequence information, the gene for TPS was identified in the Mycobacterium tuberculosis genome, and the gene was cloned and expressed in Escherichia coli with a (His)6 tag at the amino terminus. The TPS was expressed in good yield and as active enzyme, and was purified on a metal ion column to give a single band of approximately 58 kDa on SDS/PAGE. Approximately 1.3 mg of purified TPS were obtained from a 1-L culture of E. coli ( approximately 2.3 g cell paste). The purified recombinant enzyme showed a single band of approximately 58 kDa on SDS/PAGE, but a molecular mass of approximately 220 kDa by gel filtration, indicating that the active TPS is probably a tetrameric protein. Like the enzyme originally purified from M. smegmatis, the recombinant enzyme is an unusual glycosyltransferase as it can utilize any of the nucleoside diphosphate glucose derivatives as glucosyl donors, i.e. ADP-glucose, CDP-glucose, GDP-glucose, TDP-glucose and UDP-glucose, with ADP-glucose, GDP-glucose and UDP-glucose being the preferred substrates. These studies prove conclusively that the mycobacterial TPS is indeed responsible for catalyzing the synthesis of trehalose-P from any of the nucleoside diphosphate glucose derivatives. Although the original enzyme from M. smegmatis was greatly stimulated in its utilization of UDP-glucose by polyanions such as heparin, the recombinant enzyme was stimulated only modestly by heparin. The Km for UDP-glucose as the glucosyl donor was approximately 18 mm, and that for GDP-glucose was approximately 16 mm. The enzyme was specific for glucose-6-P as the glucosyl acceptor, and the Km for this substrate was approximately 7 mm when UDP-glucose was the glucosyl donor and approximately 4 mm with GDP-glucose. TPS did not show an absolute requirement for divalent cations, but activity was increased about twofold by 10 mm Mn2+. This recombinant system will be useful for obtaining sufficient amounts of protein for structural studies. TPS should be a valuable target site for chemotherapeutic intervention in tuberculosis. << Less
Eur. J. Biochem. 269:6091-6100(2002) [PubMed] [EuropePMC]
This publication is cited by 5 other entries.
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Trehalose accumulation in mutants of Saccharomyces cerevisiae deleted in the UDPG-dependent trehalose synthase-phosphatase complex.
Ferreira J.C., Thevelein J.M., Hohmann S., Paschoalin V.M., Trugo L.C., Panek A.D.
In Saccharomyces cerevisiae, trehalose-6-phosphate synthase converts uridine-5'-diphosphoglucose and glucose 6-phosphate to trehalose 6-phosphate which is dephosphorylated by trehalose 6-phosphatase to trehalose. These two steps take place within a complex consisting of three proteins: trehalose-6 ... >> More
In Saccharomyces cerevisiae, trehalose-6-phosphate synthase converts uridine-5'-diphosphoglucose and glucose 6-phosphate to trehalose 6-phosphate which is dephosphorylated by trehalose 6-phosphatase to trehalose. These two steps take place within a complex consisting of three proteins: trehalose-6-phosphate synthase encoded by the GGS1/TPS1 (= FDP1, = BYP1, = CIF1) gene, trehalose 6-phosphatase encoded by the TPS2 gene and by a third protein encoded by both the TSL1 and TPS3 genes. Using three different methods for trehalose determination, we observed trehalose accumulation in ggs1/tps1delta, tps2delta and tsl1delta mutants, and in the double mutants ggs1/tps1delta/tps2delta and also in ggs1/tps1delta deleted mutants suppressed for growth on glucose. All these mutants harbor MAL genes. Trehalose synthesis in these mutants is probably performed by the adenosine-5'-diphosphoglucose-dependent trehalose synthase, (ADPG-dependent trehalose synthase) which was detected in all strains tested. It is noteworthy that trehalose accumulation in these mutants was detected only in cells grown on weakly repressive carbon sources such as maltose and galactose or during the transition phase from fermentable to non-fermentable growth on glucose. alpha-Glucosidase activity was always present in high amounts. We also describe an adenosine-diphosphoglucosepyrophosphorylase (ADPG-pyrophosphorylase) activity in Saccharomyces cerevisiae which increased concomitantly with the accumulation of trehalose during the transition phase from fermentable to non-fermentable growth in MAL-constitutive (MAL2-8c) strains. The same was observed when MAL-induced (MAL1) strains were compared during growth on glucose and maltose. These results led us to conclude that maltose-induced trehalose accumulation is independent of the UDPG-dependent trehalose-6-phosphate synthase/phosphatase complex; that the ADPG-dependent trehalose synthase is responsible for maltose-induced trehalose accumulation probably by forming a complex with a specific trehalose-6-phosphatase activity and that ADPG synthesis is activated during trehalose accumulation under these conditions. << Less
Comments
Cited by: "Properties of a trehalose phosphate synthetase from Mycobacterium smegmatis. Activation of the enzyme by polynucleotides and other polyanions." Lapp D., Patterson B.W., Elbein A.D. J. Biol. Chem. 246:4567-4579(1971)