Evidence that hyaluronidase is not involved in tissue invasion of the protozoan parasite Entamoeba histolytica.

Nickel R, Stern R, Leippe M (2000); Infect Immun., 68(5):3053-5.

Two major 'higher molecular mass proteinases' of Entamoeba histolytica are identified as cysteine proteinases 1 and 2. Screening of environmental  DNA libraries for the presence of genes conferring lipolytic activity to Escherichia coli.