A ribonuclease-resistant region of 5S RNA and its relation to the RNA binding sites of proteins L18 and L25

Abstract
An RNA fragment, constituting three subfragments of nucleotide sequences 1–11, 69–87 and 89–120, is the most ribonuclease-resistant part of the native 5S RNA of Escherichia coli, at 0°C. A smaller fragment of nucleotide sequence 69–87 and 90–110 is ribonuclease-resistant at 25°.