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Amala M, Nagarajan H, Ahila M, Nachiappan M, Veerapandiyan M, Vetrivel U, Jeyakanthan J. Unveiling the intricacies of allosteric regulation in aspartate kinase from the Wolbachia endosymbiont of Brugia Malayi: Mechanistic and therapeutic insights. Int J Biol Macromol 2024; 267:131326. [PMID: 38569988 DOI: 10.1016/j.ijbiomac.2024.131326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 03/04/2024] [Accepted: 03/31/2024] [Indexed: 04/05/2024]
Abstract
Aspartate kinase (AK), an enzyme from the Wolbachia endosymbiont of Brugia malayi (WBm), plays a pivotal role in the bacterial cell wall and amino acid biosynthesis, rendering it an attractive candidate for therapeutic intervention. Allosteric inhibition of aspartate kinase is a prevalent mode of regulation across microorganisms and plants, often modulated by end products such as lysine, threonine, methionine, or meso-diaminopimelate. The intricate and diverse nature of microbial allosteric regulation underscores the need for rigorous investigation. This study employs a combined experimental and computational approach to decipher the allosteric regulation of WBmAK. Molecular Dynamics (MD) simulations elucidate that ATP (cofactor) and ASP (substrate) binding induce a closed conformation, promoting enzymatic activity. In contrast, the binding of lysine (allosteric inhibitor) leads to enzyme inactivation and an open conformation. The enzymatic assay demonstrates the optimal activity of WBmAK at 28 °C and a pH of 8.0. Notably, the allosteric inhibition study highlights lysine as a more potent inhibitor compared to threonine. Importantly, this investigation sheds light on the allosteric mechanism governing WBmAK and imparts novel insights into structure-based drug discovery, paving the way for the development of effective inhibitors against filarial pathogens.
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Affiliation(s)
- Mathimaran Amala
- Structural Biology and Biocomputing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630004, Tamil Nadu, India
| | - Hemavathy Nagarajan
- Structural Biology and Biocomputing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630004, Tamil Nadu, India
| | - Mathimaran Ahila
- Structural Biology and Biocomputing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630004, Tamil Nadu, India
| | - Mutharasappan Nachiappan
- Structural and Computational Biology Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), Aruna Asaf Ali Road, New Delhi 110 067, India
| | - Malaisamy Veerapandiyan
- Structural Biology and Biocomputing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630004, Tamil Nadu, India
| | - Umashankar Vetrivel
- Virology & Biotechnology/Bioinformatics Division, ICMR-National Institute for Research in Tuberculosis, Chennai, Tamil Nadu 600 031, India
| | - Jeyaraman Jeyakanthan
- Structural Biology and Biocomputing Lab, Department of Bioinformatics, Alagappa University, Karaikudi 630004, Tamil Nadu, India.
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Isogai S, Nishimura A, Inoue A, Sonohara S, Tsugukuni T, Okada T, Takagi H. Functional analysis of feedback inhibition-insensitive aspartate kinase identified in a threonine-accumulating mutant of Saccharomyces cerevisiae. Appl Environ Microbiol 2024; 90:e0015524. [PMID: 38456673 PMCID: PMC11022571 DOI: 10.1128/aem.00155-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 02/15/2024] [Indexed: 03/09/2024] Open
Abstract
Humans and mammals need to ingest essential amino acids (EAAs) for protein synthesis. In addition to their importance as nutrients, EAAs are involved in brain homeostasis. However, elderly people are unable to efficiently consume EAAs from their daily diet due to reduced appetite and variations in the contents of EAAs in foods. On the other hand, strains of the yeast Saccharomyces cerevisiae that accumulate EAAs would enable elderly people to intakegest adequate amounts of EAAs and thus might slow down the neurodegenerative process, contributing to the extension of their healthy lifespan. In this study, we isolated a mutant (strain HNV-5) that accumulates threonine, an EAA, derived from a diploid laboratory yeast by conventional mutagenesis. Strain HNV-5 carries a novel mutation in the HOM3 gene encoding the Ala462Thr variant of aspartate kinase (AK). Enzymatic analysis revealed that the Ala462Thr substitution significantly decreased the sensitivity of AK activity to threonine feedback inhibition even in the presence of 50 mM threonine. Interestingly, Ala462Thr substitution did not affect the catalytic ability of Hom3, in contrast to previously reported amino acid substitutions that resulted in reduced sensitivity to threonine feedback inhibition. Furthermore, yeast cells expressing the Ala462Thr variant showed an approximately threefold increase in intracellular threonine content compared to that of the wild-type Hom3. These findings will be useful for the development of threonine-accumulating yeast strains that may improve the quality of life in elderly people.IMPORTANCEFor humans and mammals, essential amino acids (EAAs) play an important role in maintaining brain function. Therefore, increasing the intake of EAAs by using strains of the yeast Saccharomyces cerevisiae that accumulate EAAs may inhibit neurodegeneration in elderly people and thus contribute to extending healthy lifespan and improving their quality of life. Threonine, an EAA, is synthesized from aspartate. Aspartate kinase (AK) catalyzes the first step in threonine biosynthesis and is subject to allosteric regulation by threonine. Here, we isolated a threonine-accumulating mutant of S. cerevisiae by conventional mutagenesis and identified a mutant gene encoding a novel variant of AK. In contrast to previously isolated variants, the Hom3 variant exhibited AK activity that was insensitive to feedback inhibition by threonine but retained its catalytic ability. This resulted in increased production of threonine in yeast. These findings open up the possibility for the rational design of AK to increase threonine productivity in yeast.
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Affiliation(s)
- Shota Isogai
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
| | - Akira Nishimura
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
| | - Akiko Inoue
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
| | - Shino Sonohara
- Plant Bio Business Unit, Musashi Seimitsu Industry Co., Ltd., Toyohashi, Aichi, Japan
| | - Takashi Tsugukuni
- Plant Bio Business Unit, Musashi Seimitsu Industry Co., Ltd., Toyohashi, Aichi, Japan
| | - Tomoyuki Okada
- Plant Bio Business Unit, Musashi Seimitsu Industry Co., Ltd., Toyohashi, Aichi, Japan
| | - Hiroshi Takagi
- Institute for Research Initiative, Nara Institute of Science and Technology, Takayama, Nara, Japan
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Chen Z, Fu Y, Liu S, Huang X, Kong X, Mao Z, Hu N, Zhang F, Han C. Characterization of aspartokinase double mutants using a combination of experiments and simulations. Heliyon 2023; 9:e13133. [PMID: 36747545 PMCID: PMC9898291 DOI: 10.1016/j.heliyon.2023.e13133] [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: 08/06/2022] [Revised: 01/14/2023] [Accepted: 01/18/2023] [Indexed: 01/29/2023] Open
Abstract
Aspartokinase (AK) is synergistically suppressed by Thr and Lys in the Corynebacterium metabolic pathway. Site-directed mutations can significantly improve AK inhibition. Our previous studies confirmed that sites 379 and 380 were important sites affecting enzyme activity, so we further screen the double mutants with excellent enzymatic properties from sites 379 and 380, and discuss the difference of enzyme activity between the double mutants and single mutants. Here, a double mutant, T379L/A380 M, with improved enzyme activity (2.74-fold) was obtained. Enzymatic property experiments showed that the optimum temperature of T379L/A380 M increased from 26 °C (recombinant Escherichia coli; WT-AK) to 45 °C and that the optimal pH decreased from 8.0 (WT-AK) to 7.5. Further, the half-life decreased from 4.5 to 3.32 h. These enzymatic properties were better than other mutant strains. Inhibition was diminished with low concentrations of Lys, and Lys + Thr presented an activating role. Subsequently, the reasons for the improved AK enzyme activity were illustrated with microscale thermophoresis (MST) experiments and molecular dynamic (MD) simulation by measuring ligand affinity and AK conformational changes. MST showed that the affinity between T379L/A380 M and Lys decreased, but the affinity between T379L/A380 M and Asp increased, promoting T379L/A380 M enzyme activity. MD experiments showed that T379L/A380 M enhanced the Asp-ATP affinity and catalyzed the transfer of residues S192 and D193 to Asp, promoting T379L/A380 M enzyme activity. However, the mutation did not cause fluctuations in the substrate Asp and ATP pockets. This might be why the enzyme activity was inferior to that of the single mutants (T379L and A380 M).
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Affiliation(s)
- Zhijie Chen
- School of Pharmaceutical Sciences, Tsinghua University, 100084, Beijing, China
| | - Yu Fu
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Shimeng Liu
- Jiaxing Xinbeilai Biotechnology Co., Ltd, China
| | - Xinyu Huang
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Xiaoting Kong
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Zhaojie Mao
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Ning Hu
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
| | - Fengxiang Zhang
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
- Corresponding author.
| | - Caijing Han
- School of Public Health, Weifang Medical University, Weifang, 261053, Shandong, China
- Corresponding author.
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Qi Y, Wang H, Chen X, Wei G, Tao S, Fan M. Altered Metabolic Strategies: Elaborate Mechanisms Adopted by Oenococcus oeni in Response to Acid Stress. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:2906-2918. [PMID: 33587641 DOI: 10.1021/acs.jafc.0c07599] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Oenococcus oeni plays a key role in inducing malolactic fermentation in wine. Acid stress is often encountered under wine conditions. However, the lack of systematic studies of acid resistance mechanisms limits the downstream fermentation applications. In this study, the acid responses of O. oeni were investigated by combining transcriptome, metabolome, and genome-scale metabolic modeling approaches. Metabolite profiling highlighted the decreased abundance of nucleotides under acid stress. The gene-metabolite bipartite network showed negative correlations between nucleotides and genes involved in ribosome assembly, translation, and post-translational processes, suggesting that stringent response could be activated under acid stress. Genome-scale metabolic modeling revealed marked flux rerouting, including reallocation of pyruvate, attenuation of glycolysis, utilization of carbon sources other than glucose, and enhancement of nucleotide salvage and the arginine deiminase pathway. This study provided novel insights into the acid responses of O. oeni, which will be useful for designing strategies to address acid stress in wine malolactic fermentation.
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Affiliation(s)
- Yiman Qi
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hao Wang
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
- Bioinformatics Center, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiangdan Chen
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
- Bioinformatics Center, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Gehong Wei
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shiheng Tao
- College of Life Sciences and State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
- Bioinformatics Center, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mingtao Fan
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
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Liu X, Han C, Fang L, Fan Z, Wang Y, Gao X, Shi J, Min W. Mechanism of the feedback-inhibition resistance in aspartate kinase of Corynebacterium pekinense: from experiment to MD simulations. RSC Adv 2020; 11:30-38. [PMID: 35423034 PMCID: PMC8690038 DOI: 10.1039/d0ra09153g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/14/2020] [Indexed: 11/21/2022] Open
Abstract
In microorganisms and plants, aspartate kinase (AK) is the initial committed enzyme of the biosynthesis of the aspartate acid family amino acids and is inhibited by end products. In the paper, we mutated the key allosteric regulatory site A380 around the binding site of the Lys inhibitor in Corynebacterium pekinense AK (CpAK). A single-mutant A380C was obtained with 12.35-fold higher enzyme activity through high-throughput screening. On this basis, T379 as another key allosteric regulatory site was further modified, and the double-mutant T379N/A380C with 22.79-fold higher enzyme activity was obtained. Molecular dynamics (MD) simulations were used to investigate the mechanism of allosteric inhibition by Lys. The results indicated that the binding of Lys with CpAK resulted in conformational changes and a larger distance between the phosphorus atom of ATP and the oxygen atom of Asp, which was detrimental for the catalytic reaction. However, the mutation of allosteric sites opens the "switch" of allosteric regulation and can prevent the conformational transformation. Some key residues such as G168, R203, and D193 play an important role in maintaining the substrate binding with CpAK and further enhance the enzyme activity.
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Affiliation(s)
- Xiaoting Liu
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
| | - Caijing Han
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
- School of Public Health, Weifang Medical University Weifang 261042 Shandong China
| | - Li Fang
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
| | - Zhanqing Fan
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
| | - Yanan Wang
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
| | - Xin Gao
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
| | - Junhua Shi
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
| | - Weihong Min
- College of Food Science and Engineering, National Engineering Laboratory of Wheat and Corn Deep Processing, Jilin Agricultural University Changchun 130118 Jilin People's Republic of China +86-431-8451-7235 +86-139-4491-9697
- National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 Jilin China
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Han C, Liu S, Liu C, Xie X, Fang L, Min W. The mutant T379L of novel aspartokinase from Corynebacterium pekinense: A combined experimental and molecular dynamics simulation study. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gao Y, Han C, Liu C, Wang J, Zhao L, Fang L, Min W. Enzymatic characterization and molecular mechanism of a novel aspartokinase mutant M372I/T379W from Corynebacterium pekinense. RSC Adv 2019; 9:21344-21354. [PMID: 35521304 PMCID: PMC9066179 DOI: 10.1039/c9ra03293b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 07/03/2019] [Indexed: 02/01/2023] Open
Abstract
A novel aspartokinase mutant M372I/T379W from Corynebacterium pekinense was constructed by using site-directed mutagenesis. The enzyme was then purified, characterized, and its molecular mechanism was comprehensively analyzed. Compared with wild-type AK, the catalytic activity of M372I/T379W AK was 16.51 fold higher and the optimum temperature increased from 28 to 35 °C. The thermostability of M372I/T379W AK was significantly improved. Microscale thermophoresis analysis indicated that M372I/T379W AK not only weakened the inhibitory effect of Lys, but also had stronger binding force with Asp. Molecular dynamics simulation showed that mutations M372I and T379W could regulate the activity of CpAK through affecting the flexibility of Asp and ATP binding pocket residues and the hydrogen bond between CpAK and Asp. In addition, mutations could affect the relative position of protein domains. The width of the Asp binding pocket entrance gate Arg169-Ala60 of M372I/T379W AK was greater than that in wild-type AK and the CpAK switched from T-state to R-state, which promoted the binding of the enzyme to Asp and improving the catalytic efficiency of this enzyme. These results explain the molecular mechanism of M372I/T379W AK, which will greatly facilitate the rational design of more aspartokinase mutants, with have potential applications in aspartic acid metabolism.
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Affiliation(s)
- Yunna Gao
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
| | - Caijing Han
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
| | - Chunlei Liu
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
| | - Ji Wang
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
| | - Lan Zhao
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
| | - Li Fang
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
| | - Weihong Min
- College of Food Science and Engineering, Jilin Agricultural University Changchun 130118 China +86-138-4486-2551.,National Engineering Laboratory of Wheat and Corn Deep Processing Changchun 130118 China +86-139-4491-9697
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Construction of Novel Aspartokinase Mutant A380I and Its Characterization by Molecular Dynamics Simulation. Molecules 2018; 23:molecules23123379. [PMID: 30572676 PMCID: PMC6321352 DOI: 10.3390/molecules23123379] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/15/2018] [Accepted: 12/17/2018] [Indexed: 02/01/2023] Open
Abstract
In this study, a novel monomer aspartokinase (AK) from Corynebacterium pekinense was identified, and its monomer model was constructed. Site 380 was identified by homologous sequencing and monomer model comparison as the key site which was conserved and located around the binding site of the inhibitor Lys. Furthermore, the mutant A380I with enzyme activity 11.32-fold higher than wild type AK (WT-AK), was obtained by site-directed mutagenesis and high throughput screening. In the mutant A380I, the optimal temperature was raised from 26 °C (WT-AK) to 28 °C, the optimal pH remained unchanged at 8.0, and the half-life was prolonged from 4.5 h (WT-AK) to 6.0 h, indicating enhanced thermal stability. The inhibition of A380I was weakened at various inhibitor concentrations and even activated at certain inhibitor concentrations (10 mM of Lys, 5 mM or 10 mM of Lys + Thr, 10 mM of Lys + Met, 5 mM of Lys + Thr + Met). Molecular dynamics simulation results indicated that the occupancy rate of hydrogen bond between A380I and ATP was enhanced, the effect of Lys (inhibitor) on the protein was weakened, and the angle between Ser281-Tyre358 and Asp359-Gly427 was increased after mutation, leading to an open conformation (R-state) that favored the binding of substrate.
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Liu L, Li T, Peng CT, Sun CZ, Li CC, Xiao QJ, He LH, Wang NY, Song YJ, Zhu YB, Li H, Kang M, Tang H, Xiong X, Bao R. Structural characterization of a Δ 3, Δ 2-enoyl-CoA isomerase from Pseudomonas aeruginosa: implications for its involvement in unsaturated fatty acid metabolism. J Biomol Struct Dyn 2018; 37:2695-2702. [PMID: 30052139 DOI: 10.1080/07391102.2018.1495102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Gene PA4980 from Pseudomonas aeruginosa encodes a putative enoyl-coenzyme A hydratase/isomerase that is associated with the function of the biofilm dispersion-inducing signal molecule cis-2-decenoic acid. To elucidate the role of PA4980 in cis-2-decenoic acid biosynthesis, we reported the crystal structure of its protein product at 2.39 Å. The structural analysis and substrate binding prediction suggest that it acts as a monofunctional enoyl-coenzyme A isomerase, implicating an alternative pathway of the cis-2-decenoic acid synthesis.
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Affiliation(s)
- Li Liu
- a Department of Dermatology , Affiliated Hospital, Southwest Medical University , Luzhou , China.,b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Tao Li
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Cui-Ting Peng
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Chang-Zhen Sun
- e Drug Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Chinese Medicine Hospital , Southwest Medical University , Luzhou , China
| | - Chang-Cheng Li
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Qing-Jie Xiao
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Li-Hui He
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Ning-Yu Wang
- c School of Life Science and Engineering , Southwest Jiaotong University , Chengdu , P.R. China
| | - Ying-Jie Song
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Yi-Bo Zhu
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Hong Li
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Mei Kang
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Hong Tang
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Xia Xiong
- a Department of Dermatology , Affiliated Hospital, Southwest Medical University , Luzhou , China
| | - Rui Bao
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China.,d State Key Laboratory of Biotherapy and Cancer Center and Healthy Food Evaluation Research Center , Sichuan University , Chengdu , P.R. China
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