SELENOCYSTEYL-TRANSFER RNA OCCURS IN THE DIATOM THALASSIOSIRA AND IN THE CILIATE TETRAHYMENA

被引:30
作者
HATFIELD, DL
LEE, BJ
PRICE, NM
STADTMAN, TC
机构
[1] MIT,DEPT CIVIL ENGN,RALPH M PARSONS LAB,CAMBRIDGE,MA 02139
[2] NHLBI,BIOCHEM LAB,BETHESDA,MD 20892
关键词
D O I
10.1111/j.1365-2958.1991.tb01891.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Selenocysteyl-tRNAs that decode UGA were identified previously in animal and bacterial cells and the genes for these tRNAs have been shown to be widespread in animals and eubacteria. In the present study, we identify a selenocysteyl-tRNA that codes for UGA in Thalassiosira pseudonana, which is a diatom, and in Tetrahymena borealis, which is a ciliate. The fact that these very diverse unicellular organisms also contain a selenocysteyl-tRNA suggests that selenocysteine-containing proteins and the use of UGA as a codon for selenocysteine are widespread, if not ubiquitous, in nature.
引用
收藏
页码:1183 / 1186
页数:4
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