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Balachandran N, Grainger RA, Rob T, Liuni P, Wilson DJ, Junop MS, Berti PJ. Role of Half-of-Sites Reactivity and Inter-Subunit Communications in DAHP Synthase Catalysis and Regulation. Biochemistry 2022; 61:2229-2240. [PMID: 36197914 DOI: 10.1021/acs.biochem.2c00465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
α-Carboxyketose synthases, including 3-deoxy-d-arabinoheptulosonate 7-phosphate synthase (DAHPS), are long-standing targets for inhibition. They are challenging targets to create tight-binding inhibitors against, and inhibitors often display half-of-sites binding and partial inhibition. Half-of-sites inhibition demonstrates the existence of inter-subunit communication in DAHPS. We used X-ray crystallography and spatially resolved hydrogen-deuterium exchange (HDX) to reveal the structural and dynamic bases for inter-subunit communication in Escherichia coli DAHPS(Phe), the isozyme that is feedback-inhibited by phenylalanine. Crystal structures of this homotetrameric (dimer-of-dimers) enzyme are invariant over 91% of its sequence. Three variable loops make up 8% of the sequence and are all involved in inter-subunit contacts across the tight-dimer interface. The structures have pseudo-twofold symmetry indicative of inter-subunit communication across the loose-dimer interface, with the diagonal subunits B and C always having the same conformation as each other, while subunits A and D are variable. Spatially resolved HDX reveals contrasting responses to ligand binding, which, in turn, affect binding of the second substrate, erythrose-4-phosphate (E4P). The N-terminal peptide, M1-E12, and the active site loop that binds E4P, F95-K105, are key parts of the communication network. Inter-subunit communication appears to have a catalytic role in all α-carboxyketose synthase families and a regulatory role in some members.
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Affiliation(s)
| | - Ryan A Grainger
- Department of Biochemistry, Molecular Biology Lab, Western University, London, Ontario N6A 5C1, Canada
| | - Tamanna Rob
- Department of Chemistry, York University, Toronto, Ontario M3J 1P3, Canada
| | - Peter Liuni
- Department of Chemistry, York University, Toronto, Ontario M3J 1P3, Canada
| | - Derek J Wilson
- Department of Chemistry, York University, Toronto, Ontario M3J 1P3, Canada
| | - Murray S Junop
- Department of Biochemistry, Molecular Biology Lab, Western University, London, Ontario N6A 5C1, Canada
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2
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Phenol sensing in nature is modulated via a conformational switch governed by dynamic allostery. J Biol Chem 2022; 298:102399. [PMID: 35988639 PMCID: PMC9556785 DOI: 10.1016/j.jbc.2022.102399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/21/2022] Open
Abstract
The NtrC family of proteins senses external stimuli and accordingly stimulates stress and virulence pathways via activation of associated σ54-dependent RNA polymerases. However, the structural determinants that mediate this activation are not well understood. Here, we establish using computational, structural, biochemical, and biophysical studies that MopR, an NtrC protein, harbors a dynamic bidirectional electrostatic network that connects the phenol pocket to two distal regions, namely the “G-hinge” and the “allosteric linker.” While the G-hinge influences the entry of phenol into the pocket, the allosteric linker passes the signal to the downstream ATPase domain. We show that phenol binding induces a rewiring of the electrostatic connections by eliciting dynamic allostery and demonstrates that perturbation of the core relay residues results in a complete loss of ATPase stimulation. Furthermore, we found a mutation of the G-hinge, ∼20 Å from the phenol pocket, promotes altered flexibility by shifting the pattern of conformational states accessed, leading to a protein with 7-fold enhanced phenol binding ability and enhanced transcriptional activation. Finally, we conducted a global analysis that illustrates that dynamic allostery-driven conserved community networks are universal and evolutionarily conserved across species. Taken together, these results provide insights into the mechanisms of dynamic allostery-mediated conformational changes in NtrC sensor proteins.
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3
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Huynh AT, Nguyen TTN, Villegas CA, Montemorso S, Strauss B, Pearson RA, Graham JG, Oribello J, Suresh R, Lustig B, Wang N. Prediction and confirmation of a switch-like region within the N-terminal domain of hSIRT1. Biochem Biophys Rep 2022; 30:101275. [PMID: 35592613 PMCID: PMC9112024 DOI: 10.1016/j.bbrep.2022.101275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 05/02/2022] [Accepted: 05/04/2022] [Indexed: 11/28/2022] Open
Abstract
Many proteins display conformational changes resulting from allosteric regulation. Often only a few residues are crucial in conveying these structural and functional allosteric changes. These regions that undergo a significant change in structure upon receiving an input signal, such as molecular recognition, are defined as switch-like regions. Identifying these key residues within switch-like regions can help elucidate the mechanism of allosteric regulation and provide guidance for synthetic regulation. In this study, we combine a novel computational workflow with biochemical methods to identify a switch-like region in the N-terminal domain of human SIRT1 (hSIRT1), a lysine deacetylase that plays important roles in regulating cellular pathways. Based on primary sequence, computational methods predicted a region between residues 186-193 in hSIRT1 to exhibit switch-like behavior. Mutations were then introduced in this region and the resulting mutants were tested for allosteric reactions to resveratrol, a known hSIRT1 allosteric regulator. After fine-tuning the mutations based on comparison of known secondary structures, we were able to pinpoint M193 as the residue essential for allosteric regulation, likely by communicating the allosteric signal. Mutation of this residue maintained enzyme activity but abolished allosteric regulation by resveratrol. Our findings suggest a method to predict switch-like regions in allosterically regulated enzymes based on the primary sequence. If further validated, this could be an efficient way to identify key residues in enzymes for therapeutic drug targeting and other applications.
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Affiliation(s)
- Angelina T. Huynh
- Department of Chemistry, San José State University, San José, California, 95192, USA
| | - Thi-Tina N. Nguyen
- Department of Biological Sciences, San José State University, San José, California, 95192, USA
| | - Carina A. Villegas
- Department of Biological Sciences, San José State University, San José, California, 95192, USA
| | - Saira Montemorso
- Department of Chemistry, San José State University, San José, California, 95192, USA
| | - Benjamin Strauss
- Department of Computer Science, San José State University, San José, California, 95192, USA
| | - Richard A. Pearson
- Department of Chemistry, San José State University, San José, California, 95192, USA
| | - Jason G. Graham
- Department of Biomedical, Chemical, and Materials Engineering, San José State University, San José, California, 95192, USA
| | - Jonathan Oribello
- Department of Chemistry, San José State University, San José, California, 95192, USA
| | - Rohit Suresh
- Department of Chemistry, San José State University, San José, California, 95192, USA
| | - Brooke Lustig
- Department of Chemistry, San José State University, San José, California, 95192, USA
| | - Ningkun Wang
- Department of Chemistry, San José State University, San José, California, 95192, USA
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4
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Yokoyama R, de Oliveira MVV, Takeda-Kimura Y, Ishihara H, Alseekh S, Arrivault S, Kukshal V, Jez JM, Stitt M, Fernie AR, Maeda HA. Point mutations that boost aromatic amino acid production and CO 2 assimilation in plants. SCIENCE ADVANCES 2022; 8:eabo3416. [PMID: 35675400 PMCID: PMC9176744 DOI: 10.1126/sciadv.abo3416] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Aromatic compounds having unusual stability provide high-value chemicals and considerable promise for carbon storage. Terrestrial plants can convert atmospheric CO2 into diverse and abundant aromatic compounds. However, it is unclear how plants control the shikimate pathway that connects the photosynthetic carbon fixation with the biosynthesis of aromatic amino acids, the major precursors of plant aromatic natural products. This study identified suppressor of tyra2 (sota) mutations that deregulate the first step in the plant shikimate pathway by alleviating multiple effector-mediated feedback regulation in Arabidopsis thaliana. The sota mutant plants showed hyperaccumulation of aromatic amino acids accompanied by up to a 30% increase in net CO2 assimilation. The identified mutations can be used to enhance plant-based, sustainable conversion of atmospheric CO2 to high-energy and high-value aromatic compounds.
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Affiliation(s)
- Ryo Yokoyama
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
| | | | | | - Hirofumi Ishihara
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Saleh Alseekh
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Stéphanie Arrivault
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Vandna Kukshal
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Joseph M. Jez
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Mark Stitt
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Alisdair R. Fernie
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Hiroshi A. Maeda
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
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5
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Yokoyama R, Kleven B, Gupta A, Wang Y, Maeda HA. 3-Deoxy-D-arabino-heptulosonate 7-phosphate synthase as the gatekeeper of plant aromatic natural product biosynthesis. CURRENT OPINION IN PLANT BIOLOGY 2022; 67:102219. [PMID: 35550985 DOI: 10.1016/j.pbi.2022.102219] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/23/2022] [Accepted: 03/21/2022] [Indexed: 06/15/2023]
Abstract
The shikimate pathway connects the central carbon metabolism with the biosynthesis of aromatic amino acids-l-tyrosine, l-phenylalanine, and l-tryptophan-which play indispensable roles as precursors of numerous aromatic phytochemicals. Despite the importance of the shikimate pathway-derived products for both plant physiology and human society, the regulatory mechanism of the shikimate pathway remains elusive. This review summarizes the recent progress and current understanding on the plant 3-deoxy-D-arabino-heptulosonate 7-phosphate synthase (DAHP synthase or DHS) enzymes that catalyze the committed reaction of the shikimate pathway. We particularly focus on how the DHS activity is regulated in plants in comparison to those of microbes and discuss potential roles of DHS as the critical gatekeeper for the production of plant aromatic compounds.
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Affiliation(s)
- Ryo Yokoyama
- Department of Botany, University of Wisconsin-Madison, Madison, WI, 53705, USA.
| | - Bailey Kleven
- Department of Botany, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Anika Gupta
- Department of Botany, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Yuer Wang
- Department of Botany, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Hiroshi A Maeda
- Department of Botany, University of Wisconsin-Madison, Madison, WI, 53705, USA.
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6
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Chen J, Vishweshwaraiah YL, Dokholyan NV. Design and engineering of allosteric communications in proteins. Curr Opin Struct Biol 2022; 73:102334. [PMID: 35180676 PMCID: PMC8957532 DOI: 10.1016/j.sbi.2022.102334] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/30/2021] [Accepted: 01/05/2022] [Indexed: 01/26/2023]
Abstract
Allostery in proteins plays an important role in regulating protein activities and influencing many biological processes such as gene expression, enzyme catalysis, and cell signaling. The process of allostery takes place when a signal detected at a site on a protein is transmitted via a mechanical pathway to a functional site and, thus, influences its activity. The pathway of allosteric communication consists of amino acids that form a network with covalent and non-covalent bonds. By mutating residues in this allosteric network, protein engineers have successfully established novel allosteric pathways to achieve desired properties in the target protein. In this review, we highlight the most recent and state-of-the-art techniques for allosteric communication engineering. We also discuss the challenges that need to be overcome and future directions for engineering protein allostery.
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Affiliation(s)
- Jiaxing Chen
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA, 17033-0850, USA. https://twitter.com/JiaxingChen18
| | - Yashavantha L Vishweshwaraiah
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA, 17033-0850, USA. https://twitter.com/IAmYashHegde
| | - Nikolay V Dokholyan
- Department of Pharmacology, Penn State College of Medicine, Hershey, PA, 17033-0850, USA; Department of Biochemistry & Molecular Biology, Penn State College of Medicine, Hershey, PA, 17033-0850, USA; Department of Chemistry, Pennsylvania State University, University Park, PA, 16802, USA; Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, 16802, USA.
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7
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Yang Y, Xu Y, Yue Y, Wang H, Cui Y, Pan M, Zhang X, Zhang L, Li H, Xu M, Tang Y, Chen S. Investigate Natural Product Indolmycin and the Synthetically Improved Analogue Toward Antimycobacterial Agents. ACS Chem Biol 2022; 17:39-53. [PMID: 34908399 DOI: 10.1021/acschembio.1c00394] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Indolmycin (IND) is a microbial natural product that selectively inhibits bacterial tryptophanyl-tRNA synthetase (TrpRS). The tryptophan biosynthesis pathway was recently shown to be an important target for developing new antibacterial agents against Mycobacterium tuberculosis (Mtb). We investigated the antibacterial activity of IND against several mycobacterial model strains. A TrpRS biochemical assay was developed to analyze a library of synthetic IND analogues. The 4″-methylated IND compound, Y-13, showed improved anti-Mtb activity with a minimum inhibitory concentration (MIC) of 1.88 μM (∼0.5 μg/mL). The MIC increased significantly when overexpression of TrpRS was induced in the genetically engineered surrogate M. bovis BCG. The cocrystal structure of Mtb TrpRS complexed with IND and ATP has revealed that the amino acid pocket is in a state between the open form of apo protein and the closed complex with the reaction intermediate. In whole-cell-based experiments, we studied the combination effect of Y-13 paired with different antibacterial agents. We evaluated the killing kinetics, the frequency of resistance to INDs, and the mode of resistance of IND-resistant mycobacteria by genome sequencing. The synergistic interaction of Y-13 with the TrpE allosteric inhibitor, indole propionic acid, suggests that prospective IND analogues could shut down tryptophan biosynthesis and protein biosynthesis in pathogens, leading to a new class of antibiotics. Finally, we discuss a strategy to expand the genome mining of antibiotic-producing microbes specifically for antimycobacterial development.
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Affiliation(s)
- Yuhong Yang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yuanyuan Xu
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Yuan Yue
- Ministry of Education Key Laboratory of Protein Sciences, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Heng Wang
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Yumeng Cui
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Miaomiao Pan
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Xi Zhang
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Lin Zhang
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Haitao Li
- Ministry of Education Key Laboratory of Protein Sciences, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Min Xu
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Shawn Chen
- Global Health Drug Discovery Institute, Haidian, Beijing 100192, China
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8
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Timsit Y, Grégoire SP. Towards the Idea of Molecular Brains. Int J Mol Sci 2021; 22:ijms222111868. [PMID: 34769300 PMCID: PMC8584932 DOI: 10.3390/ijms222111868] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/24/2021] [Accepted: 10/28/2021] [Indexed: 02/06/2023] Open
Abstract
How can single cells without nervous systems perform complex behaviours such as habituation, associative learning and decision making, which are considered the hallmark of animals with a brain? Are there molecular systems that underlie cognitive properties equivalent to those of the brain? This review follows the development of the idea of molecular brains from Darwin’s “root brain hypothesis”, through bacterial chemotaxis, to the recent discovery of neuron-like r-protein networks in the ribosome. By combining a structural biology view with a Bayesian brain approach, this review explores the evolutionary labyrinth of information processing systems across scales. Ribosomal protein networks open a window into what were probably the earliest signalling systems to emerge before the radiation of the three kingdoms. While ribosomal networks are characterised by long-lasting interactions between their protein nodes, cell signalling networks are essentially based on transient interactions. As a corollary, while signals propagated in persistent networks may be ephemeral, networks whose interactions are transient constrain signals diffusing into the cytoplasm to be durable in time, such as post-translational modifications of proteins or second messenger synthesis. The duration and nature of the signals, in turn, implies different mechanisms for the integration of multiple signals and decision making. Evolution then reinvented networks with persistent interactions with the development of nervous systems in metazoans. Ribosomal protein networks and simple nervous systems display architectural and functional analogies whose comparison could suggest scale invariance in information processing. At the molecular level, the significant complexification of eukaryotic ribosomal protein networks is associated with a burst in the acquisition of new conserved aromatic amino acids. Knowing that aromatic residues play a critical role in allosteric receptors and channels, this observation suggests a general role of π systems and their interactions with charged amino acids in multiple signal integration and information processing. We think that these findings may provide the molecular basis for designing future computers with organic processors.
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Affiliation(s)
- Youri Timsit
- Aix Marseille Université, Université de Toulon, CNRS, IRD, MIO UM110, 13288 Marseille, France
- Research Federation for the Study of Global Ocean Systems Ecology and Evolution, FR2022/Tara GOSEE, 3 rue Michel-Ange, 75016 Paris, France
- Correspondence:
| | - Sergeant-Perthuis Grégoire
- Institut de Mathématiques de Jussieu—Paris Rive Gauche (IMJ-PRG), UMR 7586, CNRS-Université Paris Diderot, 75013 Paris, France;
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9
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Computational investigations of allostery in aromatic amino acid biosynthetic enzymes. Biochem Soc Trans 2021; 49:415-429. [PMID: 33544132 DOI: 10.1042/bst20200741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 12/22/2022]
Abstract
Allostery, in which binding of ligands to remote sites causes a functional change in the active sites, is a fascinating phenomenon observed in enzymes. Allostery can occur either with or without significant conformational changes in the enzymes, and the molecular basis of its mechanism can be difficult to decipher using only experimental techniques. Computational tools for analyzing enzyme sequences, structures, and dynamics can provide insights into the allosteric mechanism at the atomic level. Combining computational and experimental methods offers a powerful strategy for the study of enzyme allostery. The aromatic amino acid biosynthesis pathway is essential in microorganisms and plants. Multiple enzymes involved in this pathway are sensitive to feedback regulation by pathway end products and are known to use allostery to control their activities. To date, four enzymes in the aromatic amino acid biosynthesis pathway have been computationally investigated for their allosteric mechanisms, including 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase, anthranilate synthase, chorismate mutase, and tryptophan synthase. Here we review the computational studies and findings on the allosteric mechanisms of these four enzymes. Results from these studies demonstrate the capability of computational tools and encourage future computational investigations of allostery in other enzymes of this pathway.
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Fahrig-Kamarauskait J, Würth-Roderer K, Thorbjørnsrud HV, Mailand S, Krengel U, Kast P. Evolving the naturally compromised chorismate mutase from Mycobacterium tuberculosis to top performance. J Biol Chem 2020; 295:17514-17534. [PMID: 33453995 PMCID: PMC7762937 DOI: 10.1074/jbc.ra120.014924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/08/2020] [Indexed: 11/06/2022] Open
Abstract
Chorismate mutase (CM), an essential enzyme at the branch-point of the shikimate pathway, is required for the biosynthesis of phenylalanine and tyrosine in bacteria, archaea, plants, and fungi. MtCM, the CM from Mycobacterium tuberculosis, has less than 1% of the catalytic efficiency of a typical natural CM and requires complex formation with 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase for high activity. To explore the full potential of MtCM for catalyzing its native reaction, we applied diverse iterative cycles of mutagenesis and selection, thereby raising kcat/Km 270-fold to 5 × 105m−1s−1, which is even higher than for the complex. Moreover, the evolutionarily optimized autonomous MtCM, which had 11 of its 90 amino acids exchanged, was stabilized compared with its progenitor, as indicated by a 9 °C increase in melting temperature. The 1.5 Å crystal structure of the top-evolved MtCM variant reveals the molecular underpinnings of this activity boost. Some acquired residues (e.g. Pro52 and Asp55) are conserved in naturally efficient CMs, but most of them lie beyond the active site. Our evolutionary trajectories reached a plateau at the level of the best natural enzymes, suggesting that we have exhausted the potential of MtCM. Taken together, these findings show that the scaffold of MtCM, which naturally evolved for mediocrity to enable inter-enzyme allosteric regulation of the shikimate pathway, is inherently capable of high activity.
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Affiliation(s)
| | | | | | - Susanne Mailand
- Laboratory of Organic Chemistry, ETH Zurich, Zurich, Switzerland
| | - Ute Krengel
- Department of Chemistry, University of Oslo, Oslo, Norway.
| | - Peter Kast
- Laboratory of Organic Chemistry, ETH Zurich, Zurich, Switzerland.
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11
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Diverse allosteric componentry and mechanisms control entry into aromatic metabolite biosynthesis. Curr Opin Struct Biol 2020; 65:159-167. [DOI: 10.1016/j.sbi.2020.06.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/19/2020] [Accepted: 06/24/2020] [Indexed: 02/01/2023]
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