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Evidence for a common siderophore transport system but different siderophore receptors in Neurospora crassa
The existence of a common siderophile transport system but the presence of different siderophore receptors in N. crassa is proposed, which concludes that the ferrichrome receptor is lambda-cis specific from the inability to take up the synthetic enantiomers, enantio-ferrichrome and enantIO-ferricrocin, possessing a delta- cis configuration about the iron center. Expand
(S)-3-p-methoxyphenyl-3-acetylaminopropan-1-ol, a new metabolite of an actinomycete
(S)-3-p-methoxyphenyl-3-acetamidopropan-1-ol was isolated from cultures of an actinomycete (Streptomyces michiganensis). Its structural determination by spectroscopic means and its synthesis areExpand
[Metabolic products of microorganisms, 149. Lysolipin I, a new antibiotic from streptomyces violaceoniger (author's transl)].
From the cultures of Streptomyces violaceoniger, strain Tü 96, two new lipophilic antibiotics, Lysolipin I and Lysolips X were isolated, both of which are active against Gram-positive and Gram-negative bacteria. Expand
Metabolic products of microorganisms. 200 Isolation and characterization of niphithricins A, B, and elaiophylin, antibiotics produced by Streptomyces violaceoniger.
Fermentations of Streptomyces violaceoniger TU 905 produce the antifungal antibiotics niphithricins A, B, elaiophylin and nigericin, characterized as new macrolide antibiotics, and the previously unknown structure of elaiophile was determined to be a macrodiolide. Expand
The structure of tryptanthrin
Eine Röntgenstrukturanalyse des Antibioticums Tryptanthrin ergab die Strukturformel I. Tryptanthrin erwies sich als identisch mit synthetischem 6,12-Dihydro-6,12-dioxoindolo-[2,1-b]-chinazolin.
Mechanism of alkali cation transport in bulk membranes using macrotetrolide antibiotics.
A carrier relay mechanism accounting for all experimental results is proposed since exchange of ligands is shown to occur during the transport of potassium ions in a potential gradient across a bulk membrane containing macrotetrolide antibiotics. Expand
Isolation and structural elucidation of naphthomycins B and C.
Two new ansamycin antibiotics, the naphthomycins B and C, were isolated from two different strains of Streptomyces and differ not only by the presence of an additional methyl group at C (2), but also in the configuration of some of the double bonds. Expand
Metabolites of microorganisms. 247. Phenazines from Streptomyces antibioticus, strain Tü 2706.
From a strain of Streptomyces antibioticus seven yellow phenazines were isolated, one of them with compound DC-86-Y (saphenic acid), and unsubstituted phenazine, which was isolated for the first time from a microorganism. Expand