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Khobragade TP, Giri P, Pagar AD, Patil MD, Sarak S, Joo S, Goh Y, Jung S, Yoon H, Yun S, Kwon Y, Yun H. Dual-function transaminases with hybrid nanoflower for the production of value-added chemicals from biobased levulinic acid. Front Bioeng Biotechnol 2023; 11:1280464. [PMID: 38033815 PMCID: PMC10687574 DOI: 10.3389/fbioe.2023.1280464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
The U.S. Department of Energy has listed levulinic acid (LA) as one of the top 12 compounds derived from biomass. LA has gained much attention owing to its conversion into enantiopure 4-aminopentanoic acid through an amination reaction. Herein, we developed a coupled-enzyme recyclable cascade employing two transaminases (TAs) for the synthesis of (S)-4-aminopentanoic acid. TAs were first utilized to convert LA into (S)-4-aminopentanoic acid using (S)-α-Methylbenzylamine [(S)-α-MBA] as an amino donor. The deaminated (S)-α-MBA i.e., acetophenone was recycled back using a second TAs while using isopropyl amine (IPA) amino donor to generate easily removable acetone. Enzymatic reactions were carried out using different systems, with conversions ranging from 30% to 80%. Furthermore, the hybrid nanoflowers (HNF) of the fusion protein were constructed which afforded complete biocatalytic conversion of LA to the desired (S)-4-aminopentanoic acid. The created HNF demonstrated storage stability for over a month and can be reused for up to 7 sequential cycles. A preparative scale reaction (100 mL) achieved the complete conversion with an isolated yield of 62%. Furthermore, the applicability of this recycling system was tested with different β-keto ester substrates, wherein 18%-48% of corresponding β-amino acids were synthesized. Finally, this recycling system was applied for the biosynthesis of pharmaceutical important drug sitagliptin intermediate ((R)-3-amino-4-(2,4,5-triflurophenyl) butanoic acid) with an excellent conversion 82%.
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Affiliation(s)
- Taresh P. Khobragade
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Pritam Giri
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Amol D. Pagar
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Mahesh D. Patil
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing (CIAB), Mohali, Punjab, India
| | - Sharad Sarak
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Sangwoo Joo
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Younghwan Goh
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Seohee Jung
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Hyunseok Yoon
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Subin Yun
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Youkyoung Kwon
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, Seoul, Republic of Korea
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Jeon H, Pagar AD, Kang H, Giri P, Nadarajan SP, Sarak S, Khobragade TP, Lim S, Patil MD, Lee SG, Yun H. Creation of a ( R)-β-Transaminase by Directed Evolution of d-Amino Acid Aminotransferase. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hyunwoo Jeon
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Amol D. Pagar
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Hyeona Kang
- Department of Chemical and Biomolecular Engineering, Pusan National University, 63 Busan Daehak-ro, Beon-gil, Busan 46241, Korea
| | - Pritam Giri
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Saravanan P. Nadarajan
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Sharad Sarak
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Taresh P. Khobragade
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Seonga Lim
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Mahesh D. Patil
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing (CIAB), Sector-81, PO Manauli, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Sun-Gu Lee
- Department of Chemical and Biomolecular Engineering, Pusan National University, 63 Busan Daehak-ro, Beon-gil, Busan 46241, Korea
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
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Pagar AD, Jeon H, Khobragade TP, Sarak S, Giri P, Lim S, Yoo TH, Ko BJ, Yun H. Non-Canonical Amino Acid-Based Engineering of (R)-Amine Transaminase. Front Chem 2022; 10:839636. [PMID: 35295971 PMCID: PMC8918476 DOI: 10.3389/fchem.2022.839636] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/07/2022] [Indexed: 01/07/2023] Open
Abstract
Non-canonical amino acids (ncAAs) have been utilized as an invaluable tool for modulating the active site of the enzymes, probing the complex enzyme mechanisms, improving catalytic activity, and designing new to nature enzymes. Here, we report site-specific incorporation of p-benzoyl phenylalanine (pBpA) to engineer (R)-amine transaminase previously created from d-amino acid aminotransferase scaffold. Replacement of the single Phe88 residue at the active site with pBpA exhibits a significant 15-fold and 8-fold enhancement in activity for 1-phenylpropan-1-amine and benzaldehyde, respectively. Reshaping of the enzyme’s active site afforded an another variant F86A/F88pBpA, with 30% higher thermostability at 55°C without affecting parent enzyme activity. Moreover, various racemic amines were successfully resolved by transaminase variants into (S)-amines with excellent conversions (∼50%) and enantiomeric excess (>99%) using pyruvate as an amino acceptor. Additionally, kinetic resolution of the 1-phenylpropan-1-amine was performed using benzaldehyde as an amino acceptor, which is cheaper than pyruvate. Our results highlight the utility of ncAAs for designing enzymes with enhanced functionality beyond the limit of 20 canonical amino acids.
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Affiliation(s)
- Amol D. Pagar
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
| | - Hyunwoo Jeon
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
| | | | - Sharad Sarak
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
| | - Pritam Giri
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
| | - Seonga Lim
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
| | - Tae Hyeon Yoo
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Byoung Joon Ko
- School of Biopharmaceutical and Medical Sciences, Sungshin Women’s University, Seoul, South Korea
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
- *Correspondence: Hyungdon Yun,
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Giri P, Pagar AD, Patil MD, Yun H. Chemical modification of enzymes to improve biocatalytic performance. Biotechnol Adv 2021; 53:107868. [PMID: 34774927 DOI: 10.1016/j.biotechadv.2021.107868] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 11/02/2021] [Accepted: 11/05/2021] [Indexed: 12/23/2022]
Abstract
Improvement in intrinsic enzymatic features is in many instances a prerequisite for the scalable applicability of many industrially important biocatalysts. To this end, various strategies of chemical modification of enzymes are maturing and now considered as a distinct way to improve biocatalytic properties. Traditional chemical modification methods utilize reactivities of amine, carboxylic, thiol and other side chains originating from canonical amino acids. On the other hand, noncanonical amino acid- mediated 'click' (bioorthogoal) chemistry and dehydroalanine (Dha)-mediated modifications have emerged as an alternate and promising ways to modify enzymes for functional enhancement. This review discusses the applications of various chemical modification tools that have been directed towards the improvement of functional properties and/or stability of diverse array of biocatalysts.
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Affiliation(s)
- Pritam Giri
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Amol D Pagar
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Mahesh D Patil
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing (CIAB), Sector-81, PO Manauli, S.A.S. Nagar, Mohali 140306, Punjab, India
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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Khobragade TP, Sarak S, Pagar AD, Jeon H, Giri P, Yun H. Synthesis of Sitagliptin Intermediate by a Multi-Enzymatic Cascade System Using Lipase and Transaminase With Benzylamine as an Amino Donor. Front Bioeng Biotechnol 2021; 9:757062. [PMID: 34692666 PMCID: PMC8526967 DOI: 10.3389/fbioe.2021.757062] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 09/21/2021] [Indexed: 01/30/2023] Open
Abstract
Herein, we report the development of a multi-enzyme cascade using transaminase (TA), esterase, aldehyde reductase (AHR), and formate dehydrogenase (FDH), using benzylamine as an amino donor to synthesize the industrially important compound sitagliptin intermediate. A panel of 16 TAs was screened using ethyl 3-oxo-4-(2,4,5-trifluorophenyl) butanoate as a substrate (1). Amongst these enzymes, TA from Roseomonas deserti (TARO) was found to be the most suitable, showing the highest activity towards benzylamine (∼70%). The inhibitory effect of benzaldehyde was resolved by using AHR from Synechocystis sp. and FDH from Pseudomonas sp., which catalyzed the conversion of benzaldehyde to benzyl alcohol at the expense of NAD(P)H. Reaction parameters, such as pH, buffer system, and concentration of amino donor, were optimized. A single whole-cell system was developed for co-expressing TARO and esterase, and the promoter engineering strategy was adopted to control the expression level of each biocatalyst. The whole-cell reactions were performed with varying substrate concentrations (10-100 mM), resulting in excellent conversions (ranging from 72 to 91%) into the desired product. Finally, the applicability of this cascade was highlighted on Gram scale, indicating production of 70% of the sitagliptin intermediate with 61% isolated yield. The protocol reported herein may be considered an alternative to existing methods with respect to the use of cheaper amine donors as well as improved synthesis of (R) and (S) enantiomers with the use of non-chiral amino donors.
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Affiliation(s)
| | | | | | | | | | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, Seoul, South Korea
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Khobragade TP, Yu S, Jung H, Patil MD, Sarak S, Pagar AD, Jeon H, Lee S, Giri P, Kim GH, Cho SS, Park SH, Park HJ, Kang HM, Lee SR, Lee MS, Kim JH, Choi IS, Yun H. Promoter engineering-mediated Tuning of esterase and transaminase expression for the chemoenzymatic synthesis of sitagliptin phosphate at the kilogram-scale. Biotechnol Bioeng 2021; 118:3263-3268. [PMID: 33990942 DOI: 10.1002/bit.27819] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/06/2021] [Accepted: 05/09/2021] [Indexed: 12/21/2022]
Abstract
Here, we report a bienzymatic cascade to produce β-amino acids as an intermediate for the synthesis of the leading oral antidiabetic drug, sitagliptin. A whole-cell biotransformation using recombinant Escherichia coli coexpressing a esterase and transaminase were developed, wherein the desired expression level of each enzyme was achieved by promotor engineering. The small-scale reactions (30 ml) performed under optimized conditions at varying amounts of substrate (100-300 mM) resulted in excellent conversions of 82%-95% for the desired product. Finally, a kilogram-scale enzymatic reaction (250 mM substrate, 220 L) was carried out to produce β-amino acid (229 mM). Sitagliptin phosphate was chemically synthesized from β-amino acids with 82% yield and > 99% purity.
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Affiliation(s)
- Taresh P Khobragade
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Seongseon Yu
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Hyunsang Jung
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Mahesh D Patil
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Sharad Sarak
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Amol D Pagar
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Hyunwoo Jeon
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Somin Lee
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Pritam Giri
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
| | - Geon-Hee Kim
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Sung-Su Cho
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Seong-Hwa Park
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Hye-Jung Park
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Heung M Kang
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Sung R Lee
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Myeong S Lee
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Jeong H Kim
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - In S Choi
- CKD Bio Research Institute, Ansan-si, Gyeonggi-do, South Korea
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, Seoul, Gwangjin-gu, South Korea
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Pagar AD, Patil MD, Flood DT, Yoo TH, Dawson PE, Yun H. Recent Advances in Biocatalysis with Chemical Modification and Expanded Amino Acid Alphabet. Chem Rev 2021; 121:6173-6245. [PMID: 33886302 DOI: 10.1021/acs.chemrev.0c01201] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The two main strategies for enzyme engineering, directed evolution and rational design, have found widespread applications in improving the intrinsic activities of proteins. Although numerous advances have been achieved using these ground-breaking methods, the limited chemical diversity of the biopolymers, restricted to the 20 canonical amino acids, hampers creation of novel enzymes that Nature has never made thus far. To address this, much research has been devoted to expanding the protein sequence space via chemical modifications and/or incorporation of noncanonical amino acids (ncAAs). This review provides a balanced discussion and critical evaluation of the applications, recent advances, and technical breakthroughs in biocatalysis for three approaches: (i) chemical modification of cAAs, (ii) incorporation of ncAAs, and (iii) chemical modification of incorporated ncAAs. Furthermore, the applications of these approaches and the result on the functional properties and mechanistic study of the enzymes are extensively reviewed. We also discuss the design of artificial enzymes and directed evolution strategies for enzymes with ncAAs incorporated. Finally, we discuss the current challenges and future perspectives for biocatalysis using the expanded amino acid alphabet.
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Affiliation(s)
- Amol D Pagar
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Mahesh D Patil
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
| | - Dillon T Flood
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Tae Hyeon Yoo
- Department of Molecular Science and Technology, Ajou University, 206 World cup-ro, Yeongtong-gu, Suwon 16499, Korea
| | - Philip E Dawson
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
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Sarak S, Sung S, Jeon H, Patil MD, Khobragade TP, Pagar AD, Dawson PE, Yun H. An Integrated Cofactor/Co-Product Recycling Cascade for the Biosynthesis of Nylon Monomers from Cycloalkylamines. Angew Chem Int Ed Engl 2021; 60:3481-3486. [PMID: 33140477 DOI: 10.1002/anie.202012658] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Indexed: 11/10/2022]
Abstract
We report a highly atom-efficient integrated cofactor/co-product recycling cascade employing cycloalkylamines as multifaceted starting materials for the synthesis of nylon building blocks. Reactions using E. coli whole cells as well as purified enzymes produced excellent conversions ranging from >80 and 95 % into desired ω-amino acids, respectively with varying substrate concentrations. The applicability of this tandem biocatalytic cascade was demonstrated to produce the corresponding lactams by employing engineered biocatalysts. For instance, ϵ-caprolactam, a valuable polymer building block was synthesized with 75 % conversion from 10 mM cyclohexylamine by employing whole-cell biocatalysts. This cascade could be an alternative for bio-based production of ω-amino acids and corresponding lactam compounds.
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Affiliation(s)
- Sharad Sarak
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
| | - Sihyong Sung
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
| | - Hyunwoo Jeon
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
| | - Mahesh D Patil
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
| | - Taresh P Khobragade
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
| | - Amol D Pagar
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
| | - Philip E Dawson
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Hyungdon Yun
- Department of Systems Biotechnology, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 050-29, South Korea
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Sarak S, Sung S, Jeon H, Patil MD, Khobragade TP, Pagar AD, Dawson PE, Yun H. An Integrated Cofactor/Co‐Product Recycling Cascade for the Biosynthesis of Nylon Monomers from Cycloalkylamines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Sharad Sarak
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
| | - Sihyong Sung
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
| | - Hyunwoo Jeon
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
| | - Mahesh D. Patil
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
| | - Taresh P. Khobragade
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
| | - Amol D. Pagar
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
| | - Philip E. Dawson
- Department of Chemistry The Scripps Research Institute 10550 N. Torrey Pines Road La Jolla CA 92037 USA
| | - Hyungdon Yun
- Department of Systems Biotechnology Konkuk University 120 Neungdong-ro, Gwangjin-gu Seoul 050-29 South Korea
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Won Y, Pagar AD, Patil MD, Dawson PE, Yun H. Recent Advances in Enzyme Engineering through Incorporation of Unnatural Amino Acids. BIOTECHNOL BIOPROC E 2019. [DOI: 10.1007/s12257-019-0163-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Won Y, Jeon H, Pagar AD, Patil MD, Nadarajan SP, Flood DT, Dawson PE, Yun H. In vivo biosynthesis of tyrosine analogs and their concurrent incorporation into a residue-specific manner for enzyme engineering. Chem Commun (Camb) 2019; 55:15133-15136. [DOI: 10.1039/c9cc08503c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A cellular system for the in vivo biosynthesis of Tyr-analogs and their concurrent incorporation into target proteins is reported.
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Affiliation(s)
- Yumi Won
- Department of Systems Biotechnology
- Konkuk University
- Gwangjin-gu
- Korea
| | - Hyunwoo Jeon
- Department of Systems Biotechnology
- Konkuk University
- Gwangjin-gu
- Korea
| | - Amol D. Pagar
- Department of Systems Biotechnology
- Konkuk University
- Gwangjin-gu
- Korea
| | - Mahesh D. Patil
- Department of Systems Biotechnology
- Konkuk University
- Gwangjin-gu
- Korea
| | | | - Dillon T. Flood
- Department of Chemistry
- The Scripps Research Institute
- La Jolla
- USA
| | - Philip E. Dawson
- Department of Chemistry
- The Scripps Research Institute
- La Jolla
- USA
| | - Hyungdon Yun
- Department of Systems Biotechnology
- Konkuk University
- Gwangjin-gu
- Korea
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