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Biomedical subjects

I Fischer

Publications and source records attributed to I Fischer.

At least 163 records · Page 9Linked to original sources

Phenylephrine interaction with specific red cell receptors.

An investigation of the action of phenylephrine on the transport of sodium across the human cell membrane is reported. The characteristic parameters of drug-receptor interaction -- the maximal response and ED50 -- were calculated based on the conventional dose-response plot and its linear transformations. The results obtained were in good agreement with other experimental findings.

Biological Transport, Active↗

Increased synthesis of abundant poly(A)-containing RNA in a DNA defective mutant of Saccharomyces cerevisiae containing the "killer character".

A Saccharomyces cerevisiae strain which contains both the "killer character" and a ts mutation in the initiation of nuclear DNA synthesis (cdc4) was studied. Incubation of this strain at the restrictive temperature caused a 3--4 fold increase in the relative rate of synthesis of abundant RNA which contains poly(A) and a 2--3-fold increase in the relative rate of synthesis of killer dsRNA. Thus, the amount of killer dsRNA found in these cells seems to be correlated to the amount of abundant poly(A)-RNA.

DNA↗

Abundant species of poly(A)-containing RNA from Saccharomyces cerevisiae.

Hybridization experiments using uniformly labeled poly(A) RNA derived from Saccharomyces cerevisiae strains carrying the "killer character" showed that (1) these molecules appear to be transcribed from repetitive DNA sequences. (2) there are approximately 35 DNA template sequences that are transcribed into poly(A) RNA. It is concluded that under the RNA extraction procedure used, most of the poly (A) RNA represents killer-RNA as judged by the dependence of the kinetic complexity of poly(A) RNA on the genomic complexity of killer-RNA.

Formamides↗