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. 1975 Aug;72(8):2950–2954. doi: 10.1073/pnas.72.8.2950

Interaction of elongation factor Tu with 2'(3')-O-aminoacyloligonucleotides derived from the 3' terminus of aminoacyl-tRNA.

D Ringer, S Chládek
PMCID: PMC432896  PMID: 1059085

Abstract

The interaction between Escherichia coli elongation factor-Tu-GTP complex and chemically synthesized 2'(3')-O-aminoacyldinucleoside phosphates with the nucleotide sequence of the 3' terminus of aminoacyl-tRNA (AA-tRNA) has been studied. It was found that C-A-Phe, C-A-Pro, and C-A-Asp interact with EF-Tu-GTP, causing the release of GTP bound to the enzyme. The specificity of this interaction closely resembles that of AA-tRNA since C-A and C-A(Ac-Phe) as well as the corresponding tRNAs are inactive. The 3'-O-aminoacyl derivative C-2'-dA-Phe does not interact with EF-Tu-GTP, whereas the 2'-O-aminoacyl derivative C-3'-dA-Phe is almost as active as the 2'(3')-O-aminoacyl derivative, C-A-Phe. C-A-Phe also interacts with the EF-Tu-GDP complex in a manner similar to its interaction with EF-Tu-GTP. It is concluded that interaction of 2'(3')-O-aminoacyloligonucleotides possessing the sequence of the 3' terminus of AA-tRNA is analogous to the interaction of that terminus with EF-Tu and it is suggested that EF-Tu is specific for 2'-O-AA-tRNA.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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