Abstract
The cell surface has been isolated from uninucleate, freshwater, phagocytic amoebae by a new procedure. Several criteria were employed to demonstrate purity of the cell surface fraction. All morphological components of the tripartite surface were present in the isolated surface and the weight of the isolated surface was quantitatively accounted for by the components analyzed. Chemical analyses showed the presence of lipid, protein, and carbohydrate. Mannose was the predominant neutral sugar. Analyses for three different strains of Amoeba were similar. Phosphate was found to be the major anionic group in the cell surface material. Sulfate, uronic acid, sialic acid, muramic acid, and nonamidated glutamic acid and aspartic acid were absent. Evidence is presented suggesting that the phosphate is associated with an unidentified nonreducing polyol.
MeSH Terms
Acid Phosphatase/analysis
Amino Acids/analysis
Amoeba/analysis,cytology
Animals
Calcium/analysis
Cell Membrane/analysis
Centrifugation, Density Gradient
Chromatography, Gel
Glycoside Hydrolases/analysis
Hexosamines/analysis
Histocytochemistry
Lipids/analysis
Microscopy, Electron
Microscopy, Phase-Contrast
Monosaccharides/analysis
Neuraminic Acids/analysis
Phosphates/analysis
Pronase
Proteins/analysis
RNA/analysis
Species Specificity
Succinate Dehydrogenase/analysis
Chemicals
Amino Acids
Hexosamines
Lipids
Monosaccharides
Neuraminic Acids
Phosphates
Proteins
RNA
Succinate Dehydrogenase
Acid Phosphatase
Glycoside Hydrolases
Pronase
Calcium
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Allen H J
Ault C
Winzler R J
Danielli J F
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