Modification of the amino acid acceptor stem of E. coli tRNAfMet by ligation of chemically synthesized ribooligonucleotides
Year: 1985
Type: article
Abstract: The single-stranded region of the amino acid acceptor stem corresponding to the 3'-end of E. coli tRNAMetf was replaced by ligation of chemically synthesized ribooligonucleotides, in order to change the length of the single-stranded CCA terminus. The chemically synthesized ribooligomers, CCA, ACCA, AACCA and CAACCA, were ligated to nuclease-treated E. coli tRNAMetf, which lacked the ACCA sequence at the 3'-end. The methionine acceptor activities of these modified tRNAs were examined using E. coli methionyl-tRNA synthetase. Ligation of the chemically synthesized pentamer (AACCA) to the acceptor terminus restored the methionine acceptor activity, whereas ligation of the hexamer (CAACCA) or trimer (CCA) to the acceptor terminus did not Modification of the acceptor terminus had no effect on the formylation of accepted methionine.
Source: FEBS Letters
Institution: The University of Osaka
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W2011836451