Enzymes
| UniProtKB help_outline | 3 proteins |
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- Name help_outline (2R)-3-phospho-glyceroyl phosphate Identifier CHEBI:57604 Charge -4 Formula C3H4O10P2 InChIKeyhelp_outline LJQLQCAXBUHEAZ-UWTATZPHSA-J SMILEShelp_outline O[C@H](COP([O-])([O-])=O)C(=O)OP([O-])([O-])=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 α-D-glucose 6-phosphate Identifier CHEBI:58225 Charge -2 Formula C6H11O9P InChIKeyhelp_outline NBSCHQHZLSJFNQ-DVKNGEFBSA-L SMILEShelp_outline O[C@H]1O[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 7 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline (2R)-3-phosphoglycerate Identifier CHEBI:58272 Charge -3 Formula C3H4O7P InChIKeyhelp_outline OSJPPGNTCRNQQC-UWTATZPHSA-K SMILEShelp_outline O[C@H](COP([O-])([O-])=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 24 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline α-D-glucose 1,6-bisphosphate Identifier CHEBI:58392 Charge -4 Formula C6H10O12P2 InChIKeyhelp_outline RWHOZGRAXYWRNX-VFUOTHLCSA-J SMILEShelp_outline O[C@H]1[C@H](O)[C@@H](COP([O-])([O-])=O)O[C@H](OP([O-])([O-])=O)[C@@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 5 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:70911 | RHEA:70912 | RHEA:70913 | RHEA:70914 | |
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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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Molecular identification of mammalian phosphopentomutase and glucose-1,6-bisphosphate synthase, two members of the alpha-D-phosphohexomutase family.
Maliekal P., Sokolova T., Vertommen D., Veiga-da-Cunha M., Van Schaftingen E.
The molecular identity of mammalian phosphopentomutase has not yet been established unequivocally. That of glucose-1,6-bisphosphate synthase, the enzyme that synthesizes a cofactor for phosphomutases and putative regulator of glycolysis, is completely unknown. In the present work, we have purified ... >> More
The molecular identity of mammalian phosphopentomutase has not yet been established unequivocally. That of glucose-1,6-bisphosphate synthase, the enzyme that synthesizes a cofactor for phosphomutases and putative regulator of glycolysis, is completely unknown. In the present work, we have purified phosphopentomutase from human erythrocytes and found it to copurify with a 68-kDa polypeptide that was identified by mass spectrometry as phosphoglucomutase 2 (PGM2), a protein of the alpha-d-phosphohexomutase family and sharing about 20% identity with mammalian phosphoglucomutase 1. Data base searches indicated that vertebrate genomes contained, in addition to PGM2, a homologue (PGM2L1, for PGM2-like 1) sharing about 60% sequence identity with this protein. Both PGM2 and PGM2L1 were overexpressed in Escherichia coli, purified, and their properties were studied. Using catalytic efficiency as a criterion, PGM2 acted more than 10-fold better as a phosphopentomutase (both on deoxyribose 1-phosphate and on ribose 1-phosphate) than as a phosphoglucomutase. PGM2L1 showed only low (<5%) phosphopentomutase and phosphoglucomutase activities compared with PGM2, but was about 5-20-fold better than the latter enzyme in catalyzing the 1,3-bisphosphoglycerate-dependent synthesis of glucose 1,6-bisphosphate and other aldose-bisphosphates. Furthermore, quantitative real-time PCR analysis indicated that PGM2L1 was mainly expressed in brain where glucose-1,6-bisphosphate synthase activity was previously shown to be particularly high. We conclude that mammalian phosphopentomutase and glucose-1,6-bisphosphate synthase correspond to two closely related proteins, PGM2 and PGM2L1, encoded by two genes that separated early in vertebrate evolution. << Less
J. Biol. Chem. 282:31844-31851(2007) [PubMed] [EuropePMC]
This publication is cited by 7 other entries.