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Der Einfluß von organischen Säuren des Citrat‐ und Glyoxylatzyklus sowie einiger Aminosäuren auf die Aktivität des Malatenzyms aus Acinetobacter calcoaceticus wird untersucht. Von den eingesetzten Verbindungen hemmen nur Oxalacetat und Glyoxylat das Enzym deutlich.
The dermatophyte Microsporum gypseum was grown on human hair in a mineral medium. Filtrates of cultures of various age were chromatographed on Sephadex gels and further characterized by chemical analysis and thin‐layer chromatography. The products of keratin decomposition were separated into two...
Cells of Saccharomyces carlsbergensis contain proteins assembling to crystals and bundles of tubules (tb) in the cyto‐ and karyoplasm by osmotic shock with hypertonic solutions. The cellular concentration of these proteins is regulated by oxygen pressure during growth. In cells grown at optimal...
The temperature‐sensitive DNA polymerase mutator mutants A58 and L98 of T4 are less inhibited by 3′‐Fluorothymidine than the T4 wild type and the antimutator mutant CB121, in consequence of the assumed differences between the polymerase‐associated exonuclease activities. This interpretation is...
When resting cell suspensions of the anaerobic P. shermanii were brought to an oxygen concentration of 0.64 μmoles/ml, acid formation was completely inhibited. The cells started to respire on the propionic acid previously accumulated during anaerobiosis. Glucose consumption was concomitantly...
Manganoxydierende Bakterien der Pseudomonas manganoxidans‐Gruppe wurden weiter untersucht. Die Bedingungen der Manganoxydation in Abhängigkeit von pH, Eh, Licht. O2‐Konzentration, von Mn(II)‐Verbindungen und ‐Konzentrationen, von P‐Verbindungen und organischen C + N‐Quellen wurden ermittelt.
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