Structure–specificity relationships of an intracellular xylanase from Geobacillus stearothermophilus

The crystal structure of the intracellular xylanase (IXT6) from G. stearothermophilus T-6 has been determined and refined at 1.45 Å resolution, revealing interesting structural differences around the active site of IXT6 in comparison with the homologous extracellular xylanase (XT6) from the same bacterium.