The surface and cytoplasmic membranes of Entamoeba invadens (rodhain 1934)—II. Polypeptide and phospholipid composition
| Autor: | J. Mclaughlin, E. Meerovitch |
|---|---|
| Rok vydání: | 1975 |
| Předmět: |
Ceramide
Physiology Phospholipid Biology Biochemistry Entamoeba invadens Entamoeba chemistry.chemical_compound Animals Amino Acids Threonine Molecular Biology Phospholipids Alanine chemistry.chemical_classification Cell Membrane General Medicine Molecular biology Peptide Fragments Amino acid Molecular Weight Membrane chemistry Electrophoresis Polyacrylamide Gel Leucine Peptides |
| Zdroj: | Comparative Biochemistry and Physiology Part B: Comparative Biochemistry. 52:487-497 |
| ISSN: | 0305-0491 |
| Popis: | 1. 1. Entamoeba invadens membranes contain from 9 (surface membrane) to 16 (Lv fraction-a cytoplasmic membrane) polypeptides with molecular weight ranging from 70,000- 2. 2. The surface membrane protein contains four unblocked NH2-terminal amino acids (glutamic acid, glycine, alanine, leucine); the Lv membranes contain in addition threonine and serine. 3. 3. The total amino acid content of both cell membranes is similar, glutamic and aspartic acids representing 25 μmoles % of the total. 4. 4. Ethanolamine-containing phospholipids predominate in both membrane fractions being identified as ceramide ethanolaminephosphate (14%) and phosphatidyl ethanolamine (16%). Ceramide aminoethyl-phosphonate was tentatively identified being 17·5% of surface membrane phospholipid. |
| Databáze: | OpenAIRE |
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