3.4.21.25	mature cucumisin-propeptide complex, sitting drop vapor diffusion method, using 0.05 M Bis-Tris buffer (pH 6.5) containing 0.05 M ammonium sulfate and 30% (w/v) pentaerythritol ethoxylate	
3.4.21.25	sitting drop vapor diffusion method, using 0.1 M imidazole buffer (pH 6.5) containing 0.8 M sodium acetate