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RNA甲基化与真核生物RNA生物合成的调控:CHO细胞中低甲基化tRNA的加工与利用

RNA methylation and control of eukaryotic RNA biosynthesis: processing and utilization of undermethylated tRNAs in CHO cells.

作者信息

Amalric F, Bachellerie J P, Caboche M

出版信息

Nucleic Acids Res. 1977 Dec;4(12):4357-70. doi: 10.1093/nar/4.12.4357.

Abstract

The role of RNA methylations in the control of tRNA production and utilization for protein biosynthesis has been investigated through a study of the effects in vivo of cycloleucine a specific and potent inhibitor of S adenosyl-methionine mediated methylation. During the cycloleucine treatment, the rate of appearance of newly synthetized tRNAs into the cytoplasm is markedly reduced (about 50%). These molecules are extensively (more than 90%) undermethylated and are integrated into polysomes, but at a slower rate than normally methylated tRNAs.

摘要

通过研究环亮氨酸(一种特异性强效的S-腺苷甲硫氨酸介导甲基化抑制剂)在体内的作用,人们对RNA甲基化在控制用于蛋白质生物合成的tRNA产生和利用中的作用进行了研究。在环亮氨酸处理期间,新合成的tRNA进入细胞质的速率显著降低(约50%)。这些分子甲基化程度极低(超过90%),并整合到多核糖体中,但速率比正常甲基化的tRNA慢。

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