Purification, crystallization and preliminary X-ray characterization of the human GTP fucose pyrophosphorylase
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Quirk, S., and K. L. Seley-Radtke. “Purification, Crystallization and Preliminary X-Ray Characterization of the Human GTP Fucose Pyrophosphorylase.” Acta Crystallographica Section F: Structural Biology and Crystallization Communications 62, no. 4 (April 1, 2006): 392–94. https://doi.org/10.1107/S1744309106008529.
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Abstract
The human nucleotide-sugar metabolizing enzyme GTP fucose pyrophosphorylase (GFPP) has been purified to homogeneity by an affinity chromatographic procedure that utilizes a novel nucleoside analog. This new purification regime results in a protein preparation that produces significantly better crystals than traditional purification methods. The purified 66.6 kDa monomeric protein has been crystallized via hanging-drop vapor diffusion at 293 K. Crystals of the native enzyme diffract to 2.8 Å and belong to the orthorhombic space group P2₁2₁2₁. There is a single GFPP monomer in the asymmetric unit, giving a Matthews coefficient of 2.38 ų Da⁻¹ and a solvent content of 48.2%. A complete native data set has been collected as a first step in determining the three-dimensional structure of this enzyme.