3.2.1.177	crystallographic structures of both the apo enzyme and the trapped covalent 5-fluoro-beta-xylosyl-enzyme intermediate, together with docking studies with the XXXG heptasaccharide the importance of a PA14 domain insert in the recognition of longer oligosaccharides by extension of the active-site pocket	
3.2.1.177	hanging drop method, 2.2 A resolution structure