Decryptification of acid phosphatase in Geotrichum sp. arthrospores was accomplished using acetone or dimethyl sulfoxide treatment. Both dimethyl sulfoxide and acetone irreversibly destroyed the integrity of the spore membranes without solubilizing acid phosphatase.

Rhodospirillum rubrum and Rhodopseudomonas capsulata were able to grow anaerobically in the dark either by a strict mixed-acid fermentation of sugars or, in the presence of an appropriate electron acceptor, by an energy-linked anaerobic respiration. Both species fermented fructose without the addition of accessory oxidants, but required the initial presence of bicarbonate before fermentative gr...

Application of dimethyl sulfoxide to proliferating L8 myoblasts (an established cell line of rat skeletal muscle) for 72 hr completely prevented fusion and induction of creatine phosphokinase (EC 2.7.3.2) activity (an indicator of muscle differentiation). The growth pattern changed from the usual sheets of randomly oriented cells to flattened, whorled monolayers of elongated fibroblast-like cel...

A 1H NMR study of urocanic acid dissolved in water/dimethyl sulfoxide mixtures together with potentiometric determinations of its two successive acidities in the same solutions reveal that a proton is transferred from the imidazolium ring to the carboxylate group when the amount of dimethyl sulfoxide is increased. An analysis of the potentiometric data by means of the classical Hammett linear r...

Friend murine erythroleukemia cells underwent apparently normal erythropoiesis when treated with dimethyl sulfoxide. One of the earliest events associated with this induction was a decrease in ouabain sensitive 86Rb+ uptake, an assay of the plasma membrane Na,K(ATPase). Ammonium vanadate (10 microM) blocked differentiation of these cells without affecting cell viability. Vanadium was taken up b...

The i.m. injection of dimethyl sulfoxide prior to the infection of quail with Rous sarcoma virus strain 0 and of mice with Moloney sarcoma virus resulted in increased virus titers, decreased incubation time to tumors and, in the case of Moloney sarcoma virus, decreased spontaneous regressions. Dimethyl sulfoxide administered at the time of or after infection was without effect. This compound al...

The sulfur K-edge X-ray absorption near edge spectra (XANES) of the hexakis(dimethyl sulfoxide) solvated trivalent group 13 ions, Al, Ga, In and Tl, in the solid state show larger splitting and different intensity distribution of the main sulfur 1s electronic excitations than for the uncoordinated dimethyl sulfoxide molecule. The transitions have been interpreted by density functional calculati...

The i.m. injection of dimethyl sulfoxide prior to the infection of quail with Rous sarcoma virus strain 0 and of mice with Moloney sarcoma virus resulted in increased virus titers, decreased incubation time to tumors and, in the case of Moloney sarcoma virus, decreased spontaneous regressions. Dimethyl sulfoxide administered at the time of or after infection was without effect. This compound al...