1bq3

SACCHAROMYCES CEREVISIAE PHOSPHOGLYCERATE MUTASE IN COMPLEX WITH INOSITOL HEXAKISPHOSPHATE

spinqualitylabelsall models 1bq3, resolution 2.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1bq3 is a 4 chain structure with sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.7Å Ligands: IHP, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PMG1_YEAST Interconversion of 3- and 2-phosphoglycerate with 2,3-bisphosphoglycerate as the primer of the reaction. Can also Catalyze the reaction of EC 5.4.2.4 (synthase) and EC 3.1.3.13 (phosphatase), but with a reduced activity. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The effects that the inhibitors inositol hexakisphosphate and benzene tri-, tetra- and hexacarboxylates have on the phosphoglycerate mutases from Saccharomyces cerevisiae and Schizosaccharomyces pombe have been determined. Their Kivalues have been calculated, and the ability of the inhibitors to protect the enzymes against limited proteolysis investigated. These biochemical data have been placed in a structural context by the solution of the crystal structures of S. cerevisiae phosphoglycerate mutase soaked with inositol hexakisphosphate or benzene hexacarboxylate. These large polyanionic compounds bind to the enzyme so as to block the entrance to the active-site cleft. They form multiple interactions with the enzyme, consistent with their low Kivalues, and afford good protection against limited proteolysis of the C-terminal region by thermolysin. The inositol compound is more efficacious because of its greater number of negative charges. The S. pombe phosphoglycerate mutase that is inherently lacking a comparable C-terminal region has higher Kivalues for the compounds tested. Moreover, the S. pombe enzyme is less sensititive to proteolysis, and the presence or absence of the inhibitor molecules has little effect on susceptibility to proteolysis. Polyanionic inhibitors of phosphoglycerate mutase: combined structural and biochemical analysis.,Rigden DJ, Walter RA, Phillips SE, Fothergill-Gilmore LA J Mol Biol. 1999 Jun 18;289(4):691-9. PMID:10369755 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Phosphoglycerate mutase 3D structures

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