Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology.

Marta Ferreira Amaral, Laura Frigotto, Christopher G. Ullman, Guy Hermans, Anna V. Hine

Research output: Contribution to conferenceAbstract

Abstract

ProxiMAX randomization technology (Colibra) is a defined saturation mutagenesis process that delivers precision control of both identity and relative ratio of amino acids at specified locations within a protein library. The process is non-degenerate, meaning that encoded DNA libraries are as small as is physically possible. Since no constraints are imposed by the genetic code, ProxiMAX can encode all 20 or any desired subsets of amino acids with ease. Moreover, its use of a maximum of 20 codons in saturated positions, without sequence restraints, means that many codons remain available to encode additional, unnatural amino acids (UAAs). Incorporation of UAAs is particularly relevant in expanding engineered protein repertoires. Ultimately, we aim to combine ProxiMAX with an in vitro transcription/translation system to design and express synthetic protein libraries containing multiple UAAs simultaneously. We have employed ProxiMAX randomisation to encode 18 natural amino acids (excluding Cys andMet) in various, putative amino acid-binding locations of an E. coli alanyl-tRNA synthetase. Two variant libraries, each lacking any amino acid editing function, have been created. Our poster will describe the synthesis of those libraries, each encoding >107 novel variant proteins, their composition, quality and our progress towards screening and deconvolution of the libraries to discover novel synthetases, with an initial focus on specificity for D-amino acids.
Original languageEnglish
Publication statusUnpublished - 23 Sep 2018
Event27th tRNA conference: tRNA at the crossroad. - Strasbourg, France
Duration: 23 Sep 201827 Sep 2018

Conference

Conference27th tRNA conference: tRNA at the crossroad.
CountryFrance
CityStrasbourg
Period23/09/1827/09/18

Fingerprint

Synthetic Biology
Amino Acyl-tRNA Synthetases
Amino Acids
Random Allocation
Codon
Libraries
Alanine-tRNA Ligase
Proteins
Genetic Code
Posters
Ligases
Gene Library
Mutagenesis
Escherichia coli
Technology

Cite this

Ferreira Amaral, M., Frigotto, L., Ullman, C. G., Hermans, G., & Hine, A. V. (2018). Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology.. Abstract from 27th tRNA conference: tRNA at the crossroad., Strasbourg, France.
Ferreira Amaral, Marta ; Frigotto, Laura ; Ullman, Christopher G. ; Hermans, Guy ; Hine, Anna V. / Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology. Abstract from 27th tRNA conference: tRNA at the crossroad., Strasbourg, France.
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title = "Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology.",
abstract = "ProxiMAX randomization technology (Colibra) is a defined saturation mutagenesis process that delivers precision control of both identity and relative ratio of amino acids at specified locations within a protein library. The process is non-degenerate, meaning that encoded DNA libraries are as small as is physically possible. Since no constraints are imposed by the genetic code, ProxiMAX can encode all 20 or any desired subsets of amino acids with ease. Moreover, its use of a maximum of 20 codons in saturated positions, without sequence restraints, means that many codons remain available to encode additional, unnatural amino acids (UAAs). Incorporation of UAAs is particularly relevant in expanding engineered protein repertoires. Ultimately, we aim to combine ProxiMAX with an in vitro transcription/translation system to design and express synthetic protein libraries containing multiple UAAs simultaneously. We have employed ProxiMAX randomisation to encode 18 natural amino acids (excluding Cys andMet) in various, putative amino acid-binding locations of an E. coli alanyl-tRNA synthetase. Two variant libraries, each lacking any amino acid editing function, have been created. Our poster will describe the synthesis of those libraries, each encoding >107 novel variant proteins, their composition, quality and our progress towards screening and deconvolution of the libraries to discover novel synthetases, with an initial focus on specificity for D-amino acids.",
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Ferreira Amaral, M, Frigotto, L, Ullman, CG, Hermans, G & Hine, AV 2018, 'Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology.' 27th tRNA conference: tRNA at the crossroad., Strasbourg, France, 23/09/18 - 27/09/18, .

Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology. / Ferreira Amaral, Marta; Frigotto, Laura; Ullman, Christopher G.; Hermans, Guy; Hine, Anna V.

2018. Abstract from 27th tRNA conference: tRNA at the crossroad., Strasbourg, France.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology.

AU - Ferreira Amaral, Marta

AU - Frigotto, Laura

AU - Ullman, Christopher G.

AU - Hermans, Guy

AU - Hine, Anna V.

PY - 2018/9/23

Y1 - 2018/9/23

N2 - ProxiMAX randomization technology (Colibra) is a defined saturation mutagenesis process that delivers precision control of both identity and relative ratio of amino acids at specified locations within a protein library. The process is non-degenerate, meaning that encoded DNA libraries are as small as is physically possible. Since no constraints are imposed by the genetic code, ProxiMAX can encode all 20 or any desired subsets of amino acids with ease. Moreover, its use of a maximum of 20 codons in saturated positions, without sequence restraints, means that many codons remain available to encode additional, unnatural amino acids (UAAs). Incorporation of UAAs is particularly relevant in expanding engineered protein repertoires. Ultimately, we aim to combine ProxiMAX with an in vitro transcription/translation system to design and express synthetic protein libraries containing multiple UAAs simultaneously. We have employed ProxiMAX randomisation to encode 18 natural amino acids (excluding Cys andMet) in various, putative amino acid-binding locations of an E. coli alanyl-tRNA synthetase. Two variant libraries, each lacking any amino acid editing function, have been created. Our poster will describe the synthesis of those libraries, each encoding >107 novel variant proteins, their composition, quality and our progress towards screening and deconvolution of the libraries to discover novel synthetases, with an initial focus on specificity for D-amino acids.

AB - ProxiMAX randomization technology (Colibra) is a defined saturation mutagenesis process that delivers precision control of both identity and relative ratio of amino acids at specified locations within a protein library. The process is non-degenerate, meaning that encoded DNA libraries are as small as is physically possible. Since no constraints are imposed by the genetic code, ProxiMAX can encode all 20 or any desired subsets of amino acids with ease. Moreover, its use of a maximum of 20 codons in saturated positions, without sequence restraints, means that many codons remain available to encode additional, unnatural amino acids (UAAs). Incorporation of UAAs is particularly relevant in expanding engineered protein repertoires. Ultimately, we aim to combine ProxiMAX with an in vitro transcription/translation system to design and express synthetic protein libraries containing multiple UAAs simultaneously. We have employed ProxiMAX randomisation to encode 18 natural amino acids (excluding Cys andMet) in various, putative amino acid-binding locations of an E. coli alanyl-tRNA synthetase. Two variant libraries, each lacking any amino acid editing function, have been created. Our poster will describe the synthesis of those libraries, each encoding >107 novel variant proteins, their composition, quality and our progress towards screening and deconvolution of the libraries to discover novel synthetases, with an initial focus on specificity for D-amino acids.

UR - https://trna2018.sciencesconf.org/

M3 - Abstract

ER -

Ferreira Amaral M, Frigotto L, Ullman CG, Hermans G, Hine AV. Aminoacyl-tRNA Synthetases: Investigations of Specificity for Application in ProxiMAX / Synthetic Biology.. 2018. Abstract from 27th tRNA conference: tRNA at the crossroad., Strasbourg, France.