Published in Zeitschrift für Naturforschung C
From stroma-freed chloroplasts of Antirrhinum majus polypeptides with the apparent molecular weights 44 000, 26 000 and 20 000 were isolated. The antiserum to a polypeptide with the moleculair weight 44 000 inhibits the photoreduction of anthraquinone-2-sulfonate with dichlorophenol indophenol/ascorbate when the concentration of the electron donor ...
Published in Zeitschrift für Naturforschung C
Nine flavonoids were isolated from leaves of Pinus jeffreyi and identified as kaempferol, the 3-glucosides of kaempferol, quercetin, isorhamnetin, laricitrin and syringetin, a 3-glucoside of an A-ring methylated kaempferol derivative, kaempferol-3-(p-coumarylglucoside) and kaempferol-3-(ferulylglucoside). Myricetin-3-rhamnoside was found during a...
Published in Zeitschrift für Naturforschung C
14C-labelled 3,4-dihydroxyphenylalanine (DOPA) was fed to the fruit bodies of Amanita pantherina. About 0.02% of radioactivity was incorporated into stizolobic and stizolobinic acids after 24 hours of the incubation. Radioactive stizolobic acid was crystallized after the addition of the authentic unlabelled material and the specific radioactivity w...
Published in Zeitschrift für Naturforschung C
A hitherto unknown chalkon (2′-hydroxy-4′,6′-dimethoxy-chalkon-4-glucoside) of European mistletoe (Viscum album L.) has been isolated and identified.
Published in Zeitschrift für Naturforschung C
Peroxidases were shown to be responsible for the degradation of flavanones as occuring after application of these substrates to plant cell suspension cultures. - Comparative studies with various flavanones and horseradish peroxidase showed that only 4′-hydroxyflavanones will be catabolized peroxidatically. - Intensive analyses of naringenin (5,7,4′...
Published in Zeitschrift für Naturforschung C
The thiol groups of human blood serum proteins were determined after 24 hours interaction with dithionitrobenzoicacid (DTNB) to an average of 538 ± 60 µmol/l serum. After treatment of the serum with [35S]DTNB , autoradiograms of the protein elpherograms revealed two main peaks: The first with 63% of total activity, in the albumin region, correspond...
Published in Zeitschrift für Naturforschung C
During illumination infiltrated spinach leaf sections show after a short log a linearly increasing 14C-incorporation into membrane lipids from H14CO3-. Isolated intact chloroplasts show this increase only for the neutral lipid fraction (NL). Glyco-and phospholipid accumulation declines in the light. In chloroplast suspensions the increase in conten...
Published in Zeitschrift für Naturforschung C
The cell surface areas of 3T3 and SV40-3T3 cells both for suspended and for flat cells growing on the culture substrate have been determined in dependence on growth density. The surface areas of flat 3T3 and SV40-3T3 cells turn out to be independent of growth density over a wide range. For 3T3 cells the surface area of flat cells com pares well wit...
Published in Zeitschrift für Naturforschung C
Original carbonaceous material of fossile carbon plants from the divisions of the Equisetophyta (Calamariaceae), Lycophyta (Lepidodendraceae, Sigillariaceae), Filicophyta (Filicatae), and Spermatophyta (Pteridospermatae, Cordaitidae) was analyzed by atomic absorption spectroscopy on its content of the trace metals vanadium and nickel. The average V...
Published in Zeitschrift für Naturforschung C
In several series of 581 samples, Higher Fungi, especially from the Boletales and Gasteromycetes, were analyzed by atomic absorption spectroscopy on their content of the trace metal silver. The highest Ag-content was found in the Lycoperdales (max. 50 mg/kg dry matter) and in some species of the genus Boletus (max. 15 mg Ag/kg). The other fungi te...
