Title
Structural analysis and demonstration of the 29 kDa antigen of pathogenic Entamoeba histolytica as the major accessible free thiol‐containing surface protein
Document Type
Article
Publication Date
1-1-1993
Abstract
The 29 kDa protein of pathogenic Entamoeba histolytica is a cysteine‐rich surface antigen which we recently characterized by cDNA sequencing and by using monoclonal antibodies which differentiated between pathogenic and non‐pathogenic clinical isolates. To determine the structure and biochemical attributes of this protein, a repertoire of immunologcal techniques using monoclonal antibodies, and radiolabelling were employed. We demonstrated that the 29 kDa protein forms a 60 kDa dimer and a high‐molecular‐mass oligomer(s) on the surface of the organism through disulphide bonds, and is the major accessible free thiol‐containing surface protein of E. histolytica. The deduced amino acid sequence encoding the 29 kDa protein was found to share a common amino acid domain with sequences reported for Helicobacter pylori, Salmonella typhimurium, MER5 gene expressed in murine erythroleukemia cells, Clostridium pasteurianum, and a Bacillus spp. Copyright © 1993, Wiley Blackwell. All rights reserved
Publication Source (Journal or Book title)
Molecular Microbiology
First Page
755
Last Page
763
Recommended Citation
Flores, B., Batzer, M., Stein, M., Petersen, C., Diedrich, D., & Torian, B. (1993). Structural analysis and demonstration of the 29 kDa antigen of pathogenic Entamoeba histolytica as the major accessible free thiol‐containing surface protein. Molecular Microbiology, 7 (5), 755-763. https://doi.org/10.1111/j.1365-2958.1993.tb01166.x