Identical Nutritional Requirements of Streptococcus faecium F24 and a Derived Stable L-Phase Variant
نویسندگان
چکیده
منابع مشابه
Inhibition of peptidoglycan biosynthesis at a postcytoplasmic reaction in a stable L-phase variant of Streptococcus faecium.
Cultures of a stable L-phase variant of Streptococcus faecium F24 produced and retained peptidoglycan precursors intracellularly over the entire growth cycle in a chemically defined medium. The identity of the most abundant precursor, UDP N-acetylmuramyl-L-alanyl-D-glutamyl-L-lysyl-D-alanyl-D-alanine (UDP-MurNAc-pentapeptide), was confirmed by demonstrating in vitro the presence of enzymes requ...
متن کاملProposed reproductive cycle for a relatively stable L-phase variant of Streptococcus faecalis.
Based on electron microscopic observations, the reproductive cycle of a relatively stable L-phase variant of Streptococcus faecalis was proposed. The small, dense, nonvesiculated L-form is envisioned as the central (core) element. It was seen to divide and bud rapidly. In addition, the dense forms appeared to be capable of growth and development within vesicles of mature mother forms. When thes...
متن کاملLack of murein in a formamide-insoluble fraction from the stable L-form of Streptococcus faecium.
Formamide-insoluble material was isolated from the L-form of Streptococcus faecium strain F24, but this material was not murein.
متن کاملStreptococcus faecium-derived antibacterial substance antagonistic to Bifidobacteria.
An antagonistic strain of Streptococcus faecium was isolated from human feces, and it displayed a marked inhibition of bifidobacteria on agar plates. In liquid culture this isolate produced an antibacterial substance that can be partially purified by ammonium sulfate precipitation followed by gel filtration and ion-exchange chromatography. Its activity was assayed by the inhibition of growth of...
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Background: Nutritional support of the burn patient is essential to optimize, host immune defenses and to promote prompt wound healing. Furthermore, the increased needs in calorie requirement of burned patients, the composition of proteins, carbohydrates and fats in their diet is important. The purpose of this study was to evaluate energy, macronutrient and micronutrient intake and comparing wi...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1977
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.129.2.1151-1153.1977