Turnover of Phospholipids in an Unsaturated Fatty Acid Auxotroph of Escherichia coli
AUTOR(ES)
Crowfoot, Peter D.
RESUMO
The membrane phospholipids of an unsaturated fatty acid auxotroph of Escherichia coli were found to undergo turnover. These phospholipids were excreted into the culture medium, and were replaced in the cell with newly synthesized phospholipids. Phospholipids of growing cells supplemented with elaidic acid underwent rapid turnover, while those of cells supplemented with oleate, or cis-vaccenate plus palmitoleate, underwent slow turnover. Starvation for required amino acids stimulated this turnover in the latter two cases. Protein was also lost from growing cells. However, after amino acid starvation this loss ceased while phospholipid turnover continued. Electron micrographs of growing cells indicated that large pieces of membrane-like material were separating from the cell surface.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=251577Documentos Relacionados
- Effects of Unsaturated Fatty Acids on the Morphogenesis of an Unsaturated Fatty Acid Auxotroph of Escherichia coli
- Growth in High Osmotic Medium of an Unsaturated Fatty Acid Auxotroph of Escherichia coli K-121
- CONTROL OF FATTY ACID COMPOSITION IN PHOSPHOLIPIDS OF Escherichia coli: RESPONSE TO FATTY ACID SUPPLEMENTS IN A FATTY ACID AUXOTROPH*
- Influence of unsaturated fatty acid membrane component on sensitivity of an Escherichia coli fatty acid auxotroph to conditions of nutrient depletion.
- Fatty Acid Replacements in a Fatty Acid Auxotroph of Escherichia coli
