"Distinct tRNA modifications in the thermo-acidophilic archaeon, Thermoplasma acidophilum."

Tomikawa C, Ohira T, Inoue Y, Kawamura T, Yamagishi A, Suzuki T, Hori H...



Published 2013-11-01 in FEBS Lett volume 587 .

Pubmed ID: 24076028
DOI identifier: -

Abstract:
Thermoplasma acidophilum is a thermo-acidophilic archaeon. We purified tRNA(Leu) (UAG) from T. acidophilum using a solid-phase DNA probe method and determined the RNA sequence after determining via nucleoside analysis and m(7)G-specific aniline cleavage because it has been reported that T. acidophilum tRNA contains m(7)G, which is generally not found in archaeal tRNAs. RNA sequencing and liquid chromatography-mass spectrometry revealed that the m(7)G modification exists at a novel position 49. Furthermore, we found several distinct modifications, which have not previously been found in archaeal tRNA, such as 4-thiouridine9, archaeosine13 and 5-carbamoylmethyuridine34. The related tRNA modification enzymes and their genes are discussed.


Last modification of this entry: May 15, 2014