| Literature DB >> 16082779 |
W M Ching1, A J Wittwer, L Tsai, T C Stadtman.
Abstract
Naturally occurring seleno-tRNAs from Methanococcus vannielii account for 13-20% of the total tRNA population. Two different selenium-modified nucleosides were detected in these seleno-tRNAs. Of the total selenium incorporated, about 60% is present in 5-methylaminomethyl-2-selenouridine, and the other 40% occurs in a second selenonucleoside with spectral characteristics typical of a derivative of 2-selenouridine. The 5-methylaminomethyl-2-selenouridine was found in the seleno-tRNA species present in the early fractions of a linear salt gradient elution profile from a reversed-phase chromatographic system 5 (RPC-5) column, whereas the second selenonucleoside occurred in the tRNA species eluted late in the profile.Entities:
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Year: 1984 PMID: 16082779 PMCID: PMC344609 DOI: 10.1073/pnas.81.1.57
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205