A comparative study of the 5S rRNAs from plant seeds

Summary 1. It has been established that the method of isolating ribosomes by precipitation with ethanol in the presence of Mg²⁺ can be used in the isolation of ribosomes from the seeds of other plants. The isolated 5S rRNAs have the same electrophoretic mobility, while the 5S rRNAs from plants differ sharply from the 5S rRNAs of yeast in electrophoretic mobility which is apparently due to differences in their secondary and tertiary structures.2. In the sprouting of cotton seeds, the amount of total rRNAs first increases (two-day shoots) and then falls (seven-day shoots).Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 56–59, January–February, 1979.