... dryweight of softwoods, 15–30% of hardwoods and up to30% of annual graminaceous plants [7,8].Endo-1,4-b-xylanases (EC 3.2.1.8) are O-glycosidehydrolases that catalyze a random hydrolysis of inter-nal ... determination of nonco-valent binding interactions using soft ionization massspectrometry. Int J Mass Spectrom 216, 1–27.54 Heck AJR & van den Heuvel RHH (2004) Investigation of intact protein ... of Chemistry, University of Joensuu, Finland2 Biophysics Division, Petersburg Nuclear Physics Institute, Gatchina, Russia3 Department of Chemistry, Mass Spectrometry Institute, University of...