3.4.21.B39	-	
3.4.21.B39	crystallized in complex with leupeptin, sitting drop vapour diffusion method with 0.2 M ammonium sulfate, 0.1 M Mes (pH 5.6) and 30% (w/v) PEG monomethyl ether 500	
3.4.21.B39	crystals were grown by sitting drop vapour diffusion