Respiration of Bdellovibrio bacteriovorus Strain 109J and Its Energy Substrates for Intraperiplasmic Growth
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چکیده
منابع مشابه
Respiration of Bdellovibrio bacteriovorus strain 109J and its energy substrates for intraperiplasmic growth.
Measurements of oxidation rates, respiratory quotients (RQ), and release of (14)CO(2) from uniformly labeled substrates showed that glutamate, alpha-ketoglutarate, and synthetic and natural amino acid mixtures are oxidized by suspensions of Bdellovibrio bacteriovorus strain 109J. The oxidation of these substrates largely suppress the endogenous respiration of the Bdellovibrio cells and may or m...
متن کاملIntraperiplasmic growth of Bdellovibrio bacteriovorus 109J: attachment of long-chain fatty acids to escherichia coli peptidoglycan.
During the initial stages of intraperiplasmic growth of Bdellovibrio bacteriovorus on Escherichia coli, the peptidoglycan of the E. coli becomes acylated with long-chain fatty acids, primarily palmitic acid (60%) and oleic acid (20%). The attachment of the fatty acids to the peptidoglycan involves a carboxylic-ester bond, i.e., they were removed by treatment with alkaline hydroxylamine. Their l...
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Symbiosis-independent (Sin) mutants were isolated from the symbiosis-dependent and symbiosis-competent (Sdcomp+) Bdellovibrio bacteriovorus 109J. Independently isolated Sin mutants were examined for their symbiosis competence and most were found to be comp+. Bdellovibrios comp- were selected from the Sincomp+ mutants. The Sincomp+ bdellovibrios are always at a selective disadvantage, either aga...
متن کاملOccurrence of phosphonosphingolipids in Bdellovibrio bacteriovorus strain UKi2.
The major phospholipids of two strains of Bdellovibrio bacteriovorus were characterized. Both strain UKi1, which is obligately saprophytic, and strain UKi2, which is facultatively parasitic, contained phosphatidylethanolamine and phosphatidylglycerol as their major glycerophosphatides. A branched, 15-carbon fatty acid is the major component of these alkali-labile lipids. Absent from UKi1 but pr...
متن کاملHeat shock-induced axenic growth of Bdellovibrio bacteriovorus.
The bdellovibrios are obligately predatory bacteria that attack other gram-negative bacteria. They grow only in the periplasmic space of prey unless they mutate to forms that can grow axenically. A culture medium that promoted enhanced growth of prey-independent bdellovibrios was developed. The ability of this medium to support the growth of prey-dependent bdellovibrios was tested under transcr...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1973
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.113.3.1280-1288.1973