Building Platforms to Genetically Encode New Chemistry
Thesis advisor: Abhishek Chatterjee === Abstract Unnatural amino acid (UAA) incorporation is a powerful tool used by biochemists to discover the nature of protein structure and function. The evolution of orthogonal aminoacyl-tRNA synthetase (aaRS)/tRNA pairs enables site-specific incorporation of U...
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ndltd-BOSTON-oai-dlib.bc.edu-bc-ir_1072922019-05-10T07:36:51Z Building Platforms to Genetically Encode New Chemistry Johnson, Alexander M. Thesis advisor: Abhishek Chatterjee Text thesis 2017 Boston College English electronic application/pdf Abstract Unnatural amino acid (UAA) incorporation is a powerful tool used by biochemists to discover the nature of protein structure and function. The evolution of orthogonal aminoacyl-tRNA synthetase (aaRS)/tRNA pairs enables site-specific incorporation of UAAs proteins inside of living cells. The goal of this study was to further expand the repertoire of genetically encoded unnatural amino acids in E. coli as well as eukaryotes. We first attempted to engineer an aaRS, previously evolved for p-borono-phenylalanine (pBoF), to specifically charge 3-acetyl-p-borono-phenylalanine (AcpBoF). A randomized library of the pBoF-specific synthetases was generated and it was subjected to established selection schemes in a bacterial host. This report also describes the development of a yeast-based selection system to alter the substrate specificity of bacterial leucyl-tRNA synthetase, for genetic code expansion in eukaryotes. Synthetase Evolution Unnatural Amino Acid Yeast Selection Copyright is held by the author, with all rights reserved, unless otherwise noted. Thesis (MS) — Boston College, 2017. Submitted to: Boston College. Graduate School of Arts and Sciences. Discipline: Chemistry. http://hdl.handle.net/2345/bc-ir:107292 |
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Synthetase Evolution Unnatural Amino Acid Yeast Selection |
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Synthetase Evolution Unnatural Amino Acid Yeast Selection Johnson, Alexander M. Building Platforms to Genetically Encode New Chemistry |
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Thesis advisor: Abhishek Chatterjee === Abstract Unnatural amino acid (UAA) incorporation is a powerful tool used by biochemists to discover the nature of protein structure and function. The evolution of orthogonal aminoacyl-tRNA synthetase (aaRS)/tRNA pairs enables site-specific incorporation of UAAs proteins inside of living cells. The goal of this study was to further expand the repertoire of genetically encoded unnatural amino acids in E. coli as well as eukaryotes. We first attempted to engineer an aaRS, previously evolved for p-borono-phenylalanine (pBoF), to specifically charge 3-acetyl-p-borono-phenylalanine (AcpBoF). A randomized library of the pBoF-specific synthetases was generated and it was subjected to established selection schemes in a bacterial host. This report also describes the development of a yeast-based selection system to alter the substrate specificity of bacterial leucyl-tRNA synthetase, for genetic code expansion in eukaryotes. === Thesis (MS) — Boston College, 2017. === Submitted to: Boston College. Graduate School of Arts and Sciences. === Discipline: Chemistry. |
author |
Johnson, Alexander M. |
author_facet |
Johnson, Alexander M. |
author_sort |
Johnson, Alexander M. |
title |
Building Platforms to Genetically Encode New Chemistry |
title_short |
Building Platforms to Genetically Encode New Chemistry |
title_full |
Building Platforms to Genetically Encode New Chemistry |
title_fullStr |
Building Platforms to Genetically Encode New Chemistry |
title_full_unstemmed |
Building Platforms to Genetically Encode New Chemistry |
title_sort |
building platforms to genetically encode new chemistry |
publisher |
Boston College |
publishDate |
2017 |
url |
http://hdl.handle.net/2345/bc-ir:107292 |
work_keys_str_mv |
AT johnsonalexanderm buildingplatformstogeneticallyencodenewchemistry |
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1719079550671912960 |