Library Faculty/Staff Scholarship and Research
Permanent URI for this collectionhttp://hdl.handle.net/1903/11
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Item Some biological properties of bacterial lipids(1977) Baykousheva, S; Veljanov, DItem Effect of some chemical agents on biological membranes(1977) Baykousheva, SItem Lipid composition of bacterial and stable L forms of Escherichia coli W 1655 F+(1980) Baykousheva, S; Ivanova, E; Gumpert, J; Toshkov, AItem Fatty acid composition of lipids of Escherichia coli W 1655 F+ and its stable protoplast type L-form(1982) Gumpert, J.; Schade, W.; Krebs, D.; Baykousheva, S.; Ivanova, E.; Toshkov, A.The comparative fatty acid analysis of extractable and non-extractable lipids of Escherichia coli W 1655 F+ and its stable protoplast type L-form shows quantitative as well as qualitative differences. From 10 different fatty acids obtained, 16:0, 17:0 and 18:0 were present at about the same quantities in the lipid fractions of the bacterial and L-form. The absence of larger amounts of 12:0, 14:0, and 14:beta-hydroxy fatty acids in the non-extractable L-form lipids reflects the loss of the cell wall in L-form cells. The 16:1 fatty acid was found in L-form lipids, only. This qualitative difference and the 2-3 times higher content of 18:1 in L-form lipids and the 7 times lower content of cyc-19:0 in extractable lipids of the L-form may be interpreted as alterations characteristic of the changed composition of the cytoplasmic membrane in the L-form cells.