Title: The naturally occurring N6-threonyl adenine in anticodon loop of Schizosaccharomyces pombe tRNAi causes formation of a unique U-turn motif
Authors: Lescrinier, Eveline
Nauwelaerts, Koen
Zanier, Katia
Poesen, Koen
Sattler, Michael
Herdewijn, Piet # ×
Issue Date: Jun-2006
Publisher: Oxford univ press
Series Title: Nucleic acids research vol:34 issue:10 pages:2878-86
Abstract: Modified nucleosides play an important role in structure and function of tRNA. We have determined the solution structure of the anticodon stem-loop (ASL) of initiator tRNA of Schizosaccharomyces pombe. The incorporation of N6-threonylcarbamoyladenosine at the position 3' to the anticodon triplet (t6A37) results in the formation of a U-turn motif and enhances stacking interactions within the loop and stem regions (i.e. between A35 and t6A37) by bulging out U36. This conformation was not observed in a crystal structure of tRNAi including the same modification in its anticodon loop, nor in the solution structure of the unmodified ASL. A t6A modification also occurs in the well studied anti-stem-loop of lys-tRNA(UUU). A comparison of this stem-loop with our structure demonstrates different effects of the modification depending on the loop sequence.
ISSN: 0305-1048
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Medicinal Chemistry (Rega Institute)
Vesalius Research Centre (-)
× corresponding author
# (joint) last author

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