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. 1993 Feb 11;21(3):413–417. doi: 10.1093/nar/21.3.413

Pleiotrophic effects of point mutations in yeast tRNA(Asp) on the base modification pattern.

J Edqvist 1, K B Stråby 1, H Grosjean 1
PMCID: PMC309133  PMID: 8441654

Abstract

The base-modification pattern has been studied in several synthetic variants of yeast tRNA(Asp) injected into Xenopus laevis oocytes. Certain point mutations in the D-stem and the variable loop of the tRNA led to considerably decreased levels of m1G37, psi 40 and Q34/manQ34 in the anticodon stem or loop and an increased rate of synthesis for m5C49 in the T-stem. The formation of m2G6 in the aminoacyl-stem was not affected in any of the tRNA-variants. Thus, mutations in one part of the tRNA-molecule can have long-range effects on the interactions between another part of the tRNA and the tRNA modifying enzymes.

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Selected References

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