3zi4
From Proteopedia
The structure of Beta-phosphoglucomutase Inhibited With Glucose-6-phosphate and Scandium Tetrafluoride
Structural highlights
FunctionPGMB_LACLA Catalyzes the interconversion of D-glucose 1-phosphate (G1P) and D-glucose 6-phosphate (G6P), forming beta-D-glucose 1,6-(bis)phosphate (beta-G16P) as an intermediate. The beta-phosphoglucomutase (Beta-PGM) acts on the beta-C(1) anomer of G1P. Glucose or lactose are used in preference to maltose, which is only utilized after glucose or lactose has been exhausted. It plays a key role in the regulation of the flow of carbohydrate intermediates in glycolysis and the formation of the sugar nucleotide UDP-glucose.[1] [2] Publication Abstract from PubMedEnzymes facilitating the transfer of phosphate groups constitute the most extensive protein families across all kingdoms of life. They make up approximately 10% of the proteins found in the human genome. Understanding the mechanisms by which enzymes catalyze these reactions is essential in characterizing the processes they regulate. Metal fluorides can be used as multifunctional tools to study these enzymes. These ionic species bear the same charge as phosphate and the transferring phosphoryl group and, in addition, allow the enzyme to be trapped in catalytically important states with spectroscopically sensitive atoms interacting directly with active site residues. The ionic nature of these phosphate surrogates also allows their removal and replacement with other analogs. Here, we describe the best practices to obtain these complexes, their use in NMR, X-ray crystallography, cryo-EM, and SAXS and describe a new metal fluoride, scandium tetrafluoride, which has significant anomalous signal using soft X-rays. Metal fluorides-multi-functional tools for the study of phosphoryl transfer enzymes, a practical guide.,Pellegrini E, Juyoux P, von Velsen J, Baxter NJ, Dannatt HRW, Jin Y, Cliff MJ, Waltho JP, Bowler MW Structure. 2024 Jul 22:S0969-2126(24)00270-3. doi: 10.1016/j.str.2024.07.007. PMID:39106858[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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