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Zeng H, Cheng M, Liu J, Hu C, Lin S, Cui R, Li H, Ye W, Wang L, Huang W. Pyrimirhodomyrtone inhibits Staphylococcus aureus by affecting the activity of NagA. Biochem Pharmacol 2023; 210:115455. [PMID: 36780990 DOI: 10.1016/j.bcp.2023.115455] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
The epidemic of methicillin-resistant Staphylococcus aureus (MRSA) infections has created a critical health threat. The drug resistance of MRSA makes the development of drugs with new modes of action particularly urgent. In this study, we found that a natural product derivative pyrimirhodomyrtone (PRM) exerted antibacterial activity against S. aureus, including MRSA, both in vitro and in vivo. Genetic and biochemical studies revealed the interaction between PRM and N-acetylglucosamine-6-phosphate deacetylase (NagA) and the inhibitory effect of PRM on its deacetylation activity. We also found that PRM causes depolarization and destroys the integrity of the cell membrane. The elucidation of the antibacterial mechanism will inspire the subsequent development of new anti-MRSA drugs based on PRM.
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Affiliation(s)
- Huan Zeng
- Center for Bioactive Natural Molecules and Innovative Drugs Research, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, China; Shenzhen Institute of Respiratory Diseases, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, China
| | - Minjing Cheng
- Center for Bioactive Natural Molecules and Innovative Drugs Research, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, China
| | - Jingyi Liu
- Department of Microbiology and Biochemical Pharmacy, National Engineering Research Center of Immunological Products, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Chunxia Hu
- Shenzhen Institute of Respiratory Diseases, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, China
| | - Shilin Lin
- Center for Bioactive Natural Molecules and Innovative Drugs Research, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, China
| | - Ruiqin Cui
- Shenzhen Institute of Respiratory Diseases, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, China
| | - Haibo Li
- Department of Microbiology and Biochemical Pharmacy, National Engineering Research Center of Immunological Products, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Wencai Ye
- Center for Bioactive Natural Molecules and Innovative Drugs Research, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, China.
| | - Lei Wang
- Center for Bioactive Natural Molecules and Innovative Drugs Research, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 511443, Guangdong, China.
| | - Wei Huang
- Shenzhen Institute of Respiratory Diseases, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, China; Department of Clinical Microbiology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, China.
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Davies JS, Coombes D, Horne CR, Pearce FG, Friemann R, North RA, Dobson RCJ. Functional and solution structure studies of amino sugar deacetylase and deaminase enzymes from Staphylococcus aureus. FEBS Lett 2018; 593:52-66. [PMID: 30411345 DOI: 10.1002/1873-3468.13289] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 09/24/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 12/13/2022]
Abstract
N-Acetylglucosamine-6-phosphate deacetylase (NagA) and glucosamine-6-phosphate deaminase (NagB) are branch point enzymes that direct amino sugars into different pathways. For Staphylococcus aureus NagA, analytical ultracentrifugation and small-angle X-ray scattering data demonstrate that it is an asymmetric dimer in solution. Initial rate experiments show hysteresis, which may be related to pathway regulation, and kinetic parameters similar to other bacterial isozymes. The enzyme binds two Zn2+ ions and is not substrate inhibited, unlike the Escherichia coli isozyme. S. aureus NagB adopts a novel dimeric structure in solution and shows kinetic parameters comparable to other Gram-positive isozymes. In summary, these functional data and solution structures are of use for understanding amino sugar metabolism in S. aureus, and will inform the design of inhibitory molecules.
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Affiliation(s)
- James S Davies
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - David Coombes
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Christopher R Horne
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - F Grant Pearce
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Rosmarie Friemann
- Department of Chemistry and Molecular Biology, University of Gothenburg, Sweden.,Centre for Antibiotic Resistance Research (CARe) at University of Gothenburg, Sweden
| | - Rachel A North
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.,Department of Chemistry and Molecular Biology, University of Gothenburg, Sweden
| | - Renwick C J Dobson
- Biomolecular Interaction Centre and School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.,Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Vic., Australia
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Afzal M, Shafeeq S, Manzoor I, Henriques-Normark B, Kuipers OP. N-acetylglucosamine-Mediated Expression of nagA and nagB in Streptococcus pneumoniae. Front Cell Infect Microbiol 2016; 6:158. [PMID: 27900287 PMCID: PMC5110562 DOI: 10.3389/fcimb.2016.00158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Accepted: 11/02/2016] [Indexed: 11/13/2022] Open
Abstract
In this study, we have explored the transcriptomic response of Streptococcus pneumoniae D39 to N-acetylglucosamine (NAG). Transcriptome comparison of S. pneumoniae D39 wild-type grown in chemically defined medium (CDM) in the presence of 0.5% NAG to that grown in the presence of 0.5% glucose revealed elevated expression of many genes/operons, including nagA, nagB, manLMN, and nanP. We have further confirmed the NAG-dependent expression of nagA, nagB, manLMN, and nanP by β-galactosidase assays. nagA, nagB and glmS are putatively regulated by a transcriptional regulator NagR. We predicted the operator site of NagR (dre site) in PnagA, PnagB, and PglmS, which was further confirmed by mutating the predicted dre site in the respective promoters (nagA, nagB, and glmS). Growth comparison of ΔnagA, ΔnagB, and ΔglmS with the D39 wild-type demonstrates that nagA and nagB are essential for S. pneumoniae D39 to grow in the presence of NAG as a sole carbon source. Furthermore, deletion of ccpA shows that CcpA has no effect on the expression of nagA, nagB, and glmS in the presence of NAG in S. pneumoniae.
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Affiliation(s)
- Muhammad Afzal
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of GroningenGroningen, Netherlands; Department of Bioinformatics and Biotechnology, Government College UniversityFaisalabad, Pakistan
| | - Sulman Shafeeq
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet Stockholm, Sweden
| | - Irfan Manzoor
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of GroningenGroningen, Netherlands; Department of Bioinformatics and Biotechnology, Government College UniversityFaisalabad, Pakistan
| | | | - Oscar P Kuipers
- Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen Groningen, Netherlands
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Lee HH, Jung ST. Overexpression, crystallization and preliminary X-ray crystallographic analysis of β-N-acetylglucosaminidase from Thermotoga maritima encoded by the Tm0809 gene. Acta Crystallogr Sect F Struct Biol Cryst Commun 2013; 69:115-7. [PMID: 23385748 PMCID: PMC3564609 DOI: 10.1107/s1744309112049020] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Accepted: 11/29/2012] [Indexed: 11/10/2022]
Abstract
β-N-acetylglucosaminidase (NagA) protein hs a chitin-degrading activity and chitin is one of the most abundant polymers in nature. NagA contains a family 3 glycoside (GH3)-type N-terminal domain and a unique C-terminal domain. The structurally uncharacterized C-terminal domain of NagA may be involved in substrate specificity. To provide a structural basis for the substrate specificity of NagA, structural analysis of NagA from Thermotoga maritima encoded by the Tm0809 gene was initiated. NagA from T. maritima has been overexpressed in Escherichia coli and crystallized at 296 K using ammonium sulfate as a precipitant. Crystals of T. maritima NagA diffracted to 3.80 Å resolution and belonged to the monoclinic space group C2, with unit-cell parameters a = 231.15, b = 133.62, c = 140.88 Å, β = 89.97°. The crystallization of selenomethionyl-substituted protein is in progress to solve the crystal structure of T. maritima NagA.
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Affiliation(s)
- Hyung Ho Lee
- Department of Bio and Nano Chemistry, Kookmin University, Seoul 136-702, Republic of Korea.
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