Primary Citation of Related Structures: 3FUA, 4FUA
PubMed Abstract:
The structure of L-fuculose-1-phosphate aldolase in a cubic crystal form has been determined with and without the inhibitor phosphoglycolohydroxamate at 2.4 and 2.7 angstrom (1 angstrom = 0.1 nm) resolution, respectively. This inhibitor mimics the enediolate transition state of the substrate moiety dihydroxyacetone phosphate ...
The structure of L-fuculose-1-phosphate aldolase in a cubic crystal form has been determined with and without the inhibitor phosphoglycolohydroxamate at 2.4 and 2.7 angstrom (1 angstrom = 0.1 nm) resolution, respectively. This inhibitor mimics the enediolate transition state of the substrate moiety dihydroxyacetone phosphate. The structures showed that dihydroxyacetone phosphate ligates the zinc ion of this metal-dependent class II aldolase with its hydroxyl and keto oxygen atoms, shifting Glu73 away from the zinc coordination sphere to a non-polar environment. At this position Glu73 accepts a proton in the initial reaction step, producing the enediolate which is then stabilized by the zinc ion. The other substrate moiety L-lactaldehyde was modeled, because no binding structure is yet available.
Related Citations:
Catalytic Mechanism of the Metal-Dependent Fuculose Aldolase from Escherichia Coli as Derived from the Structure Dreyer, M.K., Schulz, G.E. (1996) J Mol Biol 259: 458
The Spatial Structure of the Class II L-Fuculose-1-Phosphate Aldolase from Escherichia Coli Dreyer, M.K., Schulz, G.E. (1993) J Mol Biol 231: 549
Diastereoselective Enzymatic Aldol Additions: L-Rhamnulose and L-Fuculose 1-Phosphate Aldolases from E.Coli Fessner, W.-D., Sinerius, G., Schneider, A., Dreyer, M., Schulz, G.E., Badia, J., Aguilar, J. (1991) Angew Chem Int Ed Engl 30: 555
Organizational Affiliation:
Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität, Freiburg im Breisgau, Germany.
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