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4 citations found for Stubbs, A.
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research papers
Crystal structures of the H. pylori methylthioadenosine nucleosidase (MTAN) HpyMqnB have been solved in native and complexed forms, shedding light on substrate binding and the reaction mechanism.
research papers
The structure of a fungal α-L-arabinofuranosidase has been determined using sulfur SAD data collected in vacuo using beamline I23 at Diamond Light Source. Complexes with L-arabinose, an iminosugar and two covalent inhibitors confirm the identity of the catalytic nucleophile and provide a detailed map of enzyme–substrate interactions that are conserved between bacteria and fungi.
research communications
The three-dimensional structure of a fungal arabinofuranosidase from CAZY family GH62 has been solved at 1.25 Å resolution in complex with the bespoke arabinofuranosidase inhibitor AraDNJ, shedding light on the activity of this catalyst in the enzymatic deconstruction of arabinoxylans.
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In the asymmetric unit of the title salt, C14H18N2O2+·2CF3O3S−, the components are linked by two N—H
O and one C—HO hydrogen bonds. The dipyridinium salt demonstrates a skew conformation based upon C—O—C—C torsion angles of 61.5 (3) and 15.1 (4)°. A C—O—C angle of 119.3 (2)° and C—O bond distances of 1.364 (3) and 1.389 (3) Å are consistent with other dipyridyl ethers. The planes of the pyridyl rings exhibit a twist angle of 67.89 (8)°. One of the trifluoromethanesulfonate ions shows disorder of the F atoms [in a 0.52 (7):0.48 (7) occupancy ratio] and an O atom [0.64 (8):0.36 (8) occupancy ratio]. In the crystal, the components are linked by C—HO interactions, which form chains along [101].
O and one C—HO hydrogen bonds. The dipyridinium salt demonstrates a skew conformation based upon C—O—C—C torsion angles of 61.5 (3) and 15.1 (4)°. A C—O—C angle of 119.3 (2)° and C—O bond distances of 1.364 (3) and 1.389 (3) Å are consistent with other dipyridyl ethers. The planes of the pyridyl rings exhibit a twist angle of 67.89 (8)°. One of the trifluoromethanesulfonate ions shows disorder of the F atoms [in a 0.52 (7):0.48 (7) occupancy ratio] and an O atom [0.64 (8):0.36 (8) occupancy ratio]. In the crystal, the components are linked by C—HO interactions, which form chains along [101].
