3.1.3.21	-20°C, 10 mM Tricine, pH 7.4, 0.2 M NaCl, 2 M glycerol, 2 months	
3.1.3.21	liquid N2, 50 mM Tris, pH 7.5, 5 mM MgSO4, 20 mM NaCl, 5 mM DTT, 0.2% aminoxide WS35, no comment on storage time