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. 1978 Dec;5(12):4837–4853. doi: 10.1093/nar/5.12.4837

Participation of X47-fluorescamine modified E. coli tRNAs in in vitro protein biosynthesis.

M Sprinzl, H G Faulhammer
PMCID: PMC342792  PMID: 370780

Abstract

The reaction of fluorescamine with primary amino groups of tRNAs was investigated. The reagent was attached under mild conditions to the 3'-end of tRNAPhe-C-C-A(3'NH) from yeast and to the minor nucleoside x in E. coli tRNAArg, tRNALys, tRNAMet, tRNAIle and tRNAPhe. The primary aliphatic amino groups of these tRNAs react specifically so that the fluorescamine dye is not attached to the amino groups of the nucleobases. E. coli tRNA species modified on the minor nucleoside X47 can all be aminoacylated. An involvement of the minor modified nucleoside X47 in the tRNA: synthetase interaction is detected. Native tRNALys-C-C-A from E. coli can be phenylalanylated by phenylalanyl-tRNA synthetase from yeast, whereas this is not the case for fluorescamine treated tRNALys-C-C-A(XF47). Pre-tRNAPhe-C-C-A(XF47) forms a ternary complex with the elongation factor Tu:GTP from E. coli, binds enzymatically to the ribosomal A-site and is active in poly U dependent poly Phe synthesis. Fluorescamine-labelled E. coli tRNAs provide new substrates for the study of protein biosynthesis by spectroscopic methods.

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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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