Ching W M, Stadtman T C
Proc Natl Acad Sci U S A. 1982 Jan;79(2):374-7. doi: 10.1073/pnas.79.2.374.
Selenium-containing amino acid tRNAs are normal components of several bacterial tRNA populations. In Clostridium sticklandii seleno-nucleotides occur in at least four different tRNA species which account for 5--8% of the total tRNA population. One of these has been isolated in a highly purified form and shown to be an isoaccepting tRNAGlu. Experimental evidence indicates that the presence of the seleno-nucleotide in this tRNAGlu is essential for its acylation with glutamate.
含硒氨基酸转运核糖核酸(tRNA)是几种细菌tRNA群体的正常组成部分。在斯氏梭菌中,硒核苷酸存在于至少四种不同的tRNA种类中,占总tRNA群体的5%-8%。其中一种已被高度纯化分离出来,显示为同功tRNAGlu。实验证据表明,这种tRNAGlu中硒核苷酸的存在对其与谷氨酸的酰化作用至关重要。