Biomedical subjects
U Singer
Publications and source records attributed to U Singer.
Induction of autolysis in Bacillus subtilis by ochratoxin A.
Ochratoxin A (OTA) added during the exponential growth phase at a concentration higher than 12 microgram/ml caused autolysis of Bacillus subtilis. Optical density of cultures decreased, and at higher concentrations the cultures became sterile. Optimum OTA-induced lysis was about pH 5. At concentrations below 10 microgram/ml, protein synthesis was inhibited more strongly than RNA synthesis. Cell wall synthesis was also strongly inhibited. A fraction extracted from the lysates had the property of a lysis inhibitor. The relevance of this fraction in respect to autolysis is discussed.
Bacillus subtilis↗
[On the metabolism of the heart in high-performance athletes. The behavior of the arteriocoronary venous differences of amino acids and ammonia at rest, during and after bodily work].
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Amino Acids↗