Endo-xylanases are essential in degrading hemicellulose of various lignocellulosic substrates. Hemicellulose degradation by Geobacillus spp. is facilitated by the hemicellulose utilization (HUS) locus that is present in most strains belonging to this genus. | Biochemical characterization of the xylan hydrolysis profile of the extracellular endoxylanase from Geobacillus thermodenitrificans T12