Abstract
We have found that Lupinus luteus 5S ribosomal RNA is post-transcriptionally modified at its 3' end by addition of pG catalysed by HeLa cells extract. This extra nucleotide is not encoded within Lupinus luteus 5S rRNA gene. A similar reaction has been previously observed for eukaryotic histidine tRNAs. However an additional guanosine residue was ligated post-transcriptionally at the 5' end of that tRNA.
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