Sulfur Modifications of the Wobble U34 in tRNAs and their Intracellular Localization in Eukaryotic Cells
Sulfur Modifications of the Wobble U34 in tRNAs and their Intracellular Localization in Eukaryotic Cells
复制标题
tRNA 中 Wobble U34 的硫修饰及其在真核细胞中的细胞内定位
作者:
Y. Nakai;M. Nakai;T. Yano
The wobble uridine (U34) of transfer RNAs (tRNAs) for two-box codon recognition, i.e., tRNALysUUU, tRNAGluUUC, and tRNAGlnUUG, harbor a sulfur- (thio-) and a methyl-derivative structure at the second and fifth positions of U34, respectively. Both modifications are necessary to construct the proper anticodon loop structure and to enable them to exert their functions in translation. Thio-modification of U34 (s2U34) is found in both cytosolic tRNAs (cy-tRNAs) and mitochondrial tRNAs (mt-tRNAs). Although l-cysteine desulfurase is required in both cases, subsequent sulfur transfer pathways to cy-tRNAs and mt-tRNAs are different due to their distinct intracellular locations. The s2U34 formation in cy-tRNAs involves a sulfur delivery system required for the biosynthesis of iron-sulfur (Fe/S) clusters and certain resultant Fe/S proteins. This review addresses presumed sulfur delivery pathways for the s2U34 formation in distinct intracellular locations, especially that for cy-tRNAs in comparison with that for mt-tRNAs.
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影响因子:
2.9
作者:
Schmitz, Jennifer;Chowdhury, Mita Mullick;Leimkuehler, Silke
通讯作者:
Leimkuehler, Silke
影响因子:
64.5
作者:
Nedialkova DD;Leidel SA
通讯作者:
Leidel SA
影响因子:
3.3
作者:
Goehring, AS;Mitchell, DA;Sprague, GF
通讯作者:
Sprague, GF
DOI:
--
发表时间:
2007
期刊:
--
影响因子:
--
作者:
Fatima Cvr;E. Manser;J. Pringle
通讯作者:
Fatima Cvr;E. Manser;J. Pringle
影响因子:
2.9
作者:
Kambampati, R;Lauhon, CT
通讯作者:
Lauhon, CT