Complexes of the enzyme phosphomannomutase/phosphoglucomutase with a slow substrate and an inhibitor.Regni, C., Shackelford, G.S., Beamer, L.J.
(2006) Acta Crystallogr Sect F Struct Biol Cryst Commun 62: 722-726
- PubMed: 16880541
- DOI: https://doi.org/10.1107/S1744309106025887
- Primary Citation of Related Structures:
- PubMed Abstract:
Two complexes of the enzyme phosphomannomutase/phosphoglucomutase (PMM/PGM) from Pseudomonas aeruginosa with a slow substrate and with an inhibitor have been characterized by X-ray crystallography. Both ligands induce an interdomain rearrangement in the enzyme that creates a highly buried active site. Comparisons with enzyme-substrate complexes show that the inhibitor xylose 1-phosphate utilizes many of the previously observed enzyme-ligand interactions. In contrast, analysis of the ribose 1-phosphate complex reveals a combination of new and conserved enzyme-ligand interactions for binding. The ability of PMM/PGM to accommodate these two pentose phosphosugars in its active site may be relevant for future efforts towards inhibitor design.
Department of Structural Biology, St Jude Children's Research Hospital, 332 North Lauderdale M/S 311, Memphis, TN 38105, USA.