Abstract

A simple and rapid method is described for the analysis of in vitro methylated tRNA. The total radioactivity is first determined after trichloroacetic acid-precipitation and filtration. Then the tRNA is hydrolyzed while still on the filter, and the bases are separated by thin-layer chromatography. This method eliminates the need for duplicate sample preparation, and has proved especially useful when the amount of tRNA and/or tRNA methylase is limited.

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