Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein
碩士 === 國立中央大學 === 生命科學系 === 106 === Abstract Arc1p is a yeast-specific tRNA-binding protein that has ability to form a ternary complex with glutamyl-tRNA synthetase (GluRSc) and methionyl-tRNA synthetase (MetRS) in the cytoplasm. This complex can significantly enhance the aminoacylation efficiency...
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ndltd-TW-106NCU051050172019-05-16T01:16:35Z http://ndltd.ncl.edu.tw/handle/w6qtmj Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein Restu Nugraha 尼古拉 碩士 國立中央大學 生命科學系 106 Abstract Arc1p is a yeast-specific tRNA-binding protein that has ability to form a ternary complex with glutamyl-tRNA synthetase (GluRSc) and methionyl-tRNA synthetase (MetRS) in the cytoplasm. This complex can significantly enhance the aminoacylation efficiency of these two aaRSs to their respective cognate tRNAs. Recently, it was found that Arc1p can be biotinylated via post-translational modification at Lys86 (K86) in the N-domain. We herein studied the effect of K86 mutation on Arc1p’s structure and function. We found that mutation in K86R and K86A dramatically decreased the biotinylation level of Arc1p and altered its secondary structure. However, the mutant Arc1p could effectively rescue the cold-sensitive phenotype of an ARC1- strain, suggesting that biotinylation is dispensable for the rescue activity of Arc1p. Interestingly, K86R was more resistant to protease treatment than the wild-type, while K86A was more sensitive. Keywords: Arc1p, biotinylation, K86A, K86R, mutation. Chien-Chia Wang Widodo 王健家 Widodo 2018 學位論文 ; thesis 47 en_US |
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碩士 === 國立中央大學 === 生命科學系 === 106 === Abstract
Arc1p is a yeast-specific tRNA-binding protein that has ability to form a ternary complex with glutamyl-tRNA synthetase (GluRSc) and methionyl-tRNA synthetase (MetRS) in the cytoplasm. This complex can significantly enhance the aminoacylation efficiency of these two aaRSs to their respective cognate tRNAs. Recently, it was found that Arc1p can be biotinylated via post-translational modification at Lys86 (K86) in the N-domain. We herein studied the effect of K86 mutation on Arc1p’s structure and function. We found that mutation in K86R and K86A dramatically decreased the biotinylation level of Arc1p and altered its secondary structure. However, the mutant Arc1p could effectively rescue the cold-sensitive phenotype of an ARC1- strain, suggesting that biotinylation is dispensable for the rescue activity of Arc1p. Interestingly, K86R was more resistant to protease treatment than the wild-type, while K86A was more sensitive.
Keywords: Arc1p, biotinylation, K86A, K86R, mutation.
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author2 |
Chien-Chia Wang |
author_facet |
Chien-Chia Wang Restu Nugraha 尼古拉 |
author |
Restu Nugraha 尼古拉 |
spellingShingle |
Restu Nugraha 尼古拉 Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein |
author_sort |
Restu Nugraha |
title |
Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein |
title_short |
Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein |
title_full |
Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein |
title_fullStr |
Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein |
title_full_unstemmed |
Effect of Biotinylation on the Structure and Function of a Yeast tRNA-Binding Protein |
title_sort |
effect of biotinylation on the structure and function of a yeast trna-binding protein |
publishDate |
2018 |
url |
http://ndltd.ncl.edu.tw/handle/w6qtmj |
work_keys_str_mv |
AT restunugraha effectofbiotinylationonthestructureandfunctionofayeasttrnabindingprotein AT nígǔlā effectofbiotinylationonthestructureandfunctionofayeasttrnabindingprotein |
_version_ |
1719174372120330240 |