The cell-wall lipids of cells of tetracycline-sensitive and tetracycline-resistant strains of streptococcus pyogenes

Autor:	F.E. Norrington, A.M. James
Rok vydání:	1970
Předmět:	Tetracycline Biophysics Biology medicine.disease_cause Biochemistry Microbiology Cell wall chemistry.chemical_compound Endocrinology chemistry Unsaponifiable Long period Saponifiable lipid Streptococcus pyogenes medicine lipids (amino acids peptides and proteins) medicine.drug
Zdroj:	Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism. 218:269-277
ISSN:	0005-2760
DOI:	10.1016/0005-2760(70)90145-1
Popis:	1. 1. A comparison of the total solvent-extractable cell-wall lipid and surface lipid of a range of laboratory and recently isolated strains of Streptococcus pyogenes has been made. 2. 2. Strains of S. pyogenes which are sensitive to tetracycline have 4–6% (w/w) cell-wall lipid and no detectable surface lipid. Strains resistant to tetracycline have up to 3 times as much extractable lipid and also possess a considerable amount of surface lipid. 3. 3. Naturally occurring, tetracycline-resistant cells have a greater proportion of unsaponifiable lipid than the corresponding tetracycline-sensitive cells. 4. 4. Tetracycline-sensitive cells isolated before about 1935 and subcultured for a long period have a smaller proportion of saponifiable lipid than recently isolated strains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f5c375802ea4d882551658efeae1b0a https://doi.org/10.1016/0005-2760(70)90145-1 Zobrazit plný text záznamu