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The structure of glutaredoxin 1 from P. falciparum has been determined at atomic resolution and its unique structural features have been dissected.

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The crystal structure of the serine acetyl-xylooligosaccharide esterase from G. stearothermophilus (Axe2) has been determined by SAD techniques, allowing full structural analysis of the selenomethionine derivative Axe2-Se (at 1.70 Å resolution), the wild type Axe2-WT (1.85 Å) and the catalytic mutant Axe2-S15A (1.90 Å). The structures show that the enzyme forms a unique octameric torus built of two staggered cyclic tetramers, with four pairs of catalytic triads facing the central cavity. This octameric torus is further confirmed by gel-filtration, TEM and SAXS results.
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