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Kalkreuter E, Shen B. MIO-containing aminomutases for α- to β-amino acids. Trends in Chemistry 2022; 4:91-92. [DOI: 10.1016/j.trechm.2021.09.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Shee PK, Yan H, Walker KD. Intermolecular Amine Transfer to Enantioenriched trans-3-Phenylglycidates by an α/β-Aminomutase to Access Both anti-Phenylserine Isomers. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Prakash K. Shee
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Honggao Yan
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States
| | - Kevin D. Walker
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States
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3
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Zhu L, Yang J, Feng G, Ge F, Li W, Song P, Tao Y, Zhou Z. Investigation into isomerization reaction of phenylalanine aminomutase from Pantoea agglomerans. Enzyme Microb Technol 2020; 132:109428. [PMID: 31731949 DOI: 10.1016/j.enzmictec.2019.109428] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/30/2019] [Accepted: 09/10/2019] [Indexed: 11/23/2022]
Abstract
Phenylalanine aminomutase (PaPAM) from Pantoea agglomerans is a member of the MIO (4-methylene-imidazol-5-one) family of enzymes, which isomerizes α-phenylalanine to β-phenylalanine, and could be used to synthesize unnatural β-arylalanine. However, the mechanism of isomerization reaction is not clear. To investigate the mechanism, the gene (pam), which encodes PaPAM, was first expressed in E.coli, and recombinant PaPAM was prepared using affinity chromatography. Then, 15N-(2S)-α-phenylalanine, (2S)-(3-2H2)-α-phenylalanine and (2S,3S)-[2,3-2H2]-α-phenylalanine were used as substrates to analyze the mechanism of isomerization reaction. The results of MS and NMR showed that the isomerization reaction was performed through the intramolecular exchange of NH2 with pro-3R hydrogen of α-phenylalanine. The PaPAM shuttles the α-NH2 of α-phenylalanine to β site to replace the pro-3R hydrogen. Simultaneously, the pro-3R hydrogen is shifted to α site to produce β-phenylalanine. Furthermore, a key residue, Phe at position 455 in the active site, was determined to control the exchange way using molecular docking and sequence alignment of MIO family enzymes. The results indicated that the key 455 Phe residue is involved in changing the binding orientation of the carboxyl group of the intermediate trans-cinnamic acid to control the NH2-H pair exchange.
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Zhou L, Wang Y, Liu H, Han L, Zhang W, Cui W, Liu Z, Zhou Z. Surface engineering of a Pantoea agglomerans-derived phenylalanine aminomutase for the improvement of (S)-β-phenylalanine biosynthesis. Biochem Biophys Res Commun 2019; 518:204-11. [DOI: 10.1016/j.bbrc.2019.08.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/06/2019] [Indexed: 11/21/2022]
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Lear MJ, Hirai K, Ogawa K, Yamashita S, Hirama M. A convergent total synthesis of the kedarcidin chromophore: 20-years in the making. J Antibiot (Tokyo) 2019; 72:350-63. [PMID: 30911163 DOI: 10.1038/s41429-019-0175-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 02/20/2019] [Accepted: 03/07/2019] [Indexed: 11/09/2022]
Abstract
The kedarcidin chromophore is a formidible target for total synthesis. Herein, we describe a viable synthesis of this highly unstable natural product. This entailed the early introduction and gram-scale synthesis of 2-deoxysugar conjugates of both L-mycarose and L-kedarosamine. Key advances include: (1) stereoselective allenylzinc keto-addition to form an epoxyalkyne; (2) α-selective glycosylations with 2-deoxy thioglycosides (AgPF6/DTBMP) and Schmidt donors (TiCl4); (3) Mitsunobu aryl etherification to install a hindered 1,2-cis-configuration; (4) atropselective and convergent Sonogashira-Shiina cyclization sequence; (5) Ohfune-based amidation protocol for naphthoic acid; (6) Ce(III)-mediated nine-membered enediyne cyclization and ester/mesylate derivatisation; (7) SmI2-based reductive olefination and global HF-deprotection end-game. The longest linear sequence from gram-scale intermediates is 17-steps, and HRMS data of the synthetic natural product was obtained for the first time.
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Attanayake G, Walter T, Walker KD. Understanding Which Residues of the Active Site and Loop Structure of a Tyrosine Aminomutase Define Its Mutase and Lyase Activities. Biochemistry 2018; 57:3503-3514. [PMID: 29757631 DOI: 10.1021/acs.biochem.8b00269] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Site-directed mutations and substrate analogues were used to gain insights into the branch-point reaction of the 3,5-dihydro-5-methylidene-4 H-imidazol-4-one (MIO)-tyrosine aminomutase from Oryza sativa ( OsTAM). Exchanging the active residues of OsTAM (Y125C/N446K) for those in a phenylalanine aminomutase TcPAM altered its substrate specificity from tyrosine to phenylalanine. The aminomutase mechanism of OsTAM surprisingly changed almost exclusively to that of an ammonia lyase making cinnamic acid (>95%) over β-phenylalanine [Walter, T., et al. (2016) Biochemistry 55, 3497-3503]. We hypothesized that the missing electronics or sterics on the aryl ring of the phenylalanine substrate, compared with the sizable electron-donating hydroxyl of the natural tyrosine substrate, influenced the unexpected lyase reactivity of the OsTAM mutant. The double mutant was incubated with 16 α-phenylalanine substituent analogues of varying electronic strengths and sterics. The mutant converted each analogue principally to its acrylate with ∼50% conversion of the p-Br substrate, making only a small amount of the β-amino acid. The inner loop structure over the entrance to the active site was also mutated to assess how the lyase and mutase activities are affected. An OsTAM loop mutant, matching the loop residues of TcPAM, still chiefly made >95% of the acrylate from each substrate. A combined active site:loop mutant was most reactive but remained a lyase, making 10-fold more acrylates than other mutants did. While mutations within the active site changed the substrate specificity of OsTAM, continued exploration is needed to fully understand the interplay among the inner loop, the substrate, and the active site in defining the mutase and lyase activities.
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Affiliation(s)
- Gayanthi Attanayake
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Tyler Walter
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Kevin D Walker
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States.,Department of Biochemistry and Molecular Biology , Michigan State University , East Lansing , Michigan 48824 , United States
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Affiliation(s)
- Fabio Parmeggiani
- School of Chemistry, Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, M1 7DN, Manchester, United Kingdom
| | - Nicholas J. Weise
- School of Chemistry, Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, M1 7DN, Manchester, United Kingdom
| | - Syed T. Ahmed
- School of Chemistry, Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, M1 7DN, Manchester, United Kingdom
| | - Nicholas J. Turner
- School of Chemistry, Manchester
Institute of Biotechnology, University of Manchester, 131 Princess
Street, M1 7DN, Manchester, United Kingdom
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Ahmed ST, Parmeggiani F, Weise NJ, Flitsch SL, Turner NJ. Synthesis of Enantiomerically Pure Ring-Substituted l-Pyridylalanines by Biocatalytic Hydroamination. Org Lett 2016; 18:5468-5471. [DOI: 10.1021/acs.orglett.6b02559] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Syed T. Ahmed
- School of Chemistry, The University of Manchester, Manchester Institute of Biotechnology, 131
Princess Street, M1 7DN Manchester, United Kingdom
| | - Fabio Parmeggiani
- School of Chemistry, The University of Manchester, Manchester Institute of Biotechnology, 131
Princess Street, M1 7DN Manchester, United Kingdom
| | - Nicholas J. Weise
- School of Chemistry, The University of Manchester, Manchester Institute of Biotechnology, 131
Princess Street, M1 7DN Manchester, United Kingdom
| | - Sabine L. Flitsch
- School of Chemistry, The University of Manchester, Manchester Institute of Biotechnology, 131
Princess Street, M1 7DN Manchester, United Kingdom
| | - Nicholas J. Turner
- School of Chemistry, The University of Manchester, Manchester Institute of Biotechnology, 131
Princess Street, M1 7DN Manchester, United Kingdom
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Walter T, Wijewardena D, Walker KD. Mutation of Aryl Binding Pocket Residues Results in an Unexpected Activity Switch in an Oryza sativa Tyrosine Aminomutase. Biochemistry 2016; 55:3497-503. [DOI: 10.1021/acs.biochem.6b00331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tyler Walter
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Devinda Wijewardena
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
| | - Kevin D. Walker
- Department
of Chemistry, Michigan State University, East Lansing, Michigan 48824, United States
- Department
of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, United States
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Heberling MM, Masman MF, Bartsch S, Wybenga GG, Dijkstra BW, Marrink SJ, Janssen DB. Ironing out their differences: dissecting the structural determinants of a phenylalanine aminomutase and ammonia lyase. ACS Chem Biol 2015; 10:989-97. [PMID: 25494407 DOI: 10.1021/cb500794h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Deciphering the structural features that functionally separate ammonia lyases from aminomutases is of interest because it may allow for the engineering of more efficient aminomutases for the synthesis of unnatural amino acids (e.g., β-amino acids). However, this has proved to be a major challenge that involves understanding the factors that influence their activity and regioselectivity differences. Herein, we report evidence of a structural determinant that dictates the activity differences between a phenylalanine ammonia lyase (PAL) and aminomutase (PAM). An inner loop region that closes the active sites of both PAM and PAL was mutated within PAM (PAM residues 77-97) in a stepwise approach to study the effects when the equivalent residue(s) found in the PAL loop were introduced into the PAM loop. Almost all of the single loop mutations triggered a lyase phenotype in PAM. Experimental and computational evidence suggest that the induced lyase features result from inner loop mobility enhancements, which are possibly caused by a 310-helix cluster, flanking α-helices, and hydrophobic interactions. These findings pinpoint the inner loop as a structural determinant of the lyase and mutase activities of PAM.
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Affiliation(s)
- Matthew M. Heberling
- Department
of Biochemistry, Groningen Biomolecular Sciences and Biotechnology
Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Marcelo F. Masman
- Department
of Biochemistry, Groningen Biomolecular Sciences and Biotechnology
Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Sebastian Bartsch
- Department
of Biochemistry, Groningen Biomolecular Sciences and Biotechnology
Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | | | | | | | - Dick B. Janssen
- Department
of Biochemistry, Groningen Biomolecular Sciences and Biotechnology
Institute, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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Li J, Xie Z, Wang M, Ai G, Chen Y. Identification and analysis of the paulomycin biosynthetic gene cluster and titer improvement of the paulomycins in Streptomyces paulus NRRL 8115. PLoS One 2015; 10:e0120542. [PMID: 25822496 PMCID: PMC4425429 DOI: 10.1371/journal.pone.0120542] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 01/26/2015] [Indexed: 11/30/2022] Open
Abstract
The paulomycins are a group of glycosylated compounds featuring a unique paulic
acid moiety. To locate their biosynthetic gene clusters, the genomes of two
paulomycin producers, Streptomyces paulus NRRL 8115 and
Streptomyces sp. YN86, were sequenced. The paulomycin
biosynthetic gene clusters were defined by comparative analyses of the two
genomes together with the genome of the third paulomycin producer
Streptomyces albus J1074. Subsequently, the identity of the
paulomycin biosynthetic gene cluster was confirmed by inactivation of two genes
involved in biosynthesis of the paulomycose branched chain
(pau11) and the ring A moiety (pau18) in
Streptomyces paulus NRRL 8115. After determining the gene
cluster boundaries, a convergent biosynthetic model was proposed for paulomycin
based on the deduced functions of the pau genes. Finally, a
paulomycin high-producing strain was constructed by expressing an
activator-encoding gene (pau13) in S.
paulus, setting the stage for future investigations.
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Affiliation(s)
- Jine Li
- State Key Laboratory of Microbial Resources, Institute of
Microbiology, Chinese Academy of Sciences (CAS), Beijing, 100101, P. R.
China
| | - Zhoujie Xie
- State Key Laboratory of Microbial Resources, Institute of
Microbiology, Chinese Academy of Sciences (CAS), Beijing, 100101, P. R.
China
| | - Min Wang
- State Key Laboratory of Microbial Resources, Institute of
Microbiology, Chinese Academy of Sciences (CAS), Beijing, 100101, P. R.
China
| | - Guomin Ai
- State Key Laboratory of Microbial Resources, Institute of
Microbiology, Chinese Academy of Sciences (CAS), Beijing, 100101, P. R.
China
| | - Yihua Chen
- State Key Laboratory of Microbial Resources, Institute of
Microbiology, Chinese Academy of Sciences (CAS), Beijing, 100101, P. R.
China
- * E-mail:
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Ratnayake ND, Liu N, Kuhn LA, Walker KD. Ring-Substituted α-Arylalanines for Probing Substituent Effects on the Isomerization Reaction Catalyzed by an Aminomutase. ACS Catal 2014. [DOI: 10.1021/cs500474s] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Nishanka Dilini Ratnayake
- Department of Chemistry, ‡Department of Biochemistry and Molecular Biology, and §Computer Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Nan Liu
- Department of Chemistry, ‡Department of Biochemistry and Molecular Biology, and §Computer Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Leslie A. Kuhn
- Department of Chemistry, ‡Department of Biochemistry and Molecular Biology, and §Computer Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
| | - Kevin D. Walker
- Department of Chemistry, ‡Department of Biochemistry and Molecular Biology, and §Computer Science & Engineering, Michigan State University, East Lansing, Michigan 48824, United States
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Abstract
β-Amino acids are unique components involved in a wide variety of natural products such as anticancer agents taxol, bleomycin, cytotoxic microcystin, enediyne compound C-1027 chromophore, nucleoside antibiotic blasticidin S, and macrolactam antibiotic vicenistatin. The biosynthesis and incorporation mechanisms are reviewed.
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Affiliation(s)
- Fumitaka Kudo
- Department of Chemistry
- Tokyo Institute of Technology
- Tokyo 152-8551, Japan
| | - Akimasa Miyanaga
- Department of Chemistry
- Tokyo Institute of Technology
- Tokyo 152-8551, Japan
| | - Tadashi Eguchi
- Department of Chemistry and Materials Science
- Tokyo Institute of Technology
- Tokyo 152-8551, Japan
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Amagai K, Takaku R, Kudo F, Eguchi T. A Unique Amino Transfer Mechanism for Constructing the β-Amino Fatty Acid Starter Unit in the Biosynthesis of the Macrolactam Antibiotic Cremimycin. Chembiochem 2013; 14:1998-2006. [DOI: 10.1002/cbic.201300370] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Indexed: 11/06/2022]
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