2.3.3.14	enzyme is very unstable in crude and protamine sulphate-treated desalted extracts	488145	
2.3.3.14	freezing and thawing results in 50% loss of activity	488145	
2.3.3.14	the purified enzyme can be stabilized using a combination of guanidine hydrochloride, alpha-cyclodextrin and ammonium sulfate	660793