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Bouymajane A, Filali FR, Moujane S, Majdoub YOE, Otzen P, Channaoui S, Ed-Dra A, Bouddine T, Sellam K, Boughrous AA, Miceli N, Altemimi AB, Cacciola F. Phenolic Compound, Antioxidant, Antibacterial, and In Silico Studies of Extracts from the Aerial Parts of Lactuca saligna L. Molecules 2024; 29:596. [PMID: 38338341 PMCID: PMC10856452 DOI: 10.3390/molecules29030596] [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: 12/19/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Medicinal plants are considered a major source for discovering novel effective drugs. To our knowledge, no studies have reported the chemical composition and biological activities of Moroccan Lactuca saligna extracts. In this context, this study aims to characterize the polyphenolic compounds distributed in hydro-methanolic extracts of L. saligna and evaluate their antioxidant and antibacterial activities; in addition, in silico analysis based on molecular docking and ADMET was performed to predict the antibacterial activity of the identified phenolic compounds. Our results showed the identification of 29 among 30 detected phenolic compounds with an abundance of dicaffeoyltartaric acid, luteolin 7-glucoronide, 3,5-di-O-caffeoylquinic acid, and 5-caffeoylquinic acid with 472.77, 224.30, 196.79, and 171.74 mg/kg of dried extract, respectively. Additionally, antioxidant activity assessed by DPPH scavenging activity, ferric reducing antioxidant power (FRAP) assay, and ferrous ion-chelating (FIC) assay showed interesting antioxidant activity. Moreover, the results showed remarkable antibacterial activity against Escherichia coli, Salmonella typhimurium, Pseudomonas aeruginosa, Enterococcus faecalis, Staphylococcus aureus, and Listeria monocytogenes with minimum inhibitory concentrations between 1.30 ± 0.31 and 10.41 ± 0.23 mg/mL. Furthermore, in silico analysis identified three compounds, including Apigenin 7-O-glucuronide, Quercetin-3-O-glucuronide, and 3-p-Coumaroylquinic acid as potent candidates for developing new antibacterial agents with acceptable pharmacokinetic properties. Hence, L. saligna can be considered a source of phytochemical compounds with remarkable activities, while further in vitro and in vivo studies are required to explore the main biological activities of this plant.
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Affiliation(s)
- Aziz Bouymajane
- Biology, Environment and Health Team, Faculty of Sciences and Technologies, Moulay Ismail University, Meknes 50070, Morocco
- Team of Microbiology and Health, Laboratory of Chemistry-Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, Meknes 50070, Morocco
| | - Fouzia Rhazi Filali
- Team of Microbiology and Health, Laboratory of Chemistry-Biology Applied to the Environment, Faculty of Sciences, Moulay Ismail University, Meknes 50070, Morocco
| | - Soumia Moujane
- Biochemistry of Natural Substances, Faculty of Science and Techniques, Moulay Ismail University, Errachdia 50003, Morocco
| | - Yassine Oulad El Majdoub
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
| | - Philipp Otzen
- Institute of Anorganic and Analytical Chemistry, University of Münster, Corrensstraße 48, 48149 Münster, Germany
| | - Souhail Channaoui
- Oasis System Research Unit, Regional Center of Agricultural Research of Errachidia, National Institute of Agricultural Research, P.O. Box 415, Rabat 10090, Morocco
| | - Abdelaziz Ed-Dra
- Laboratory of Engineering and Applied Technologies, Higher School of Technology, M’ghila Campus, Sultan Moulay Slimane University, Beni Mellal 23000, Morocco
| | - Toufik Bouddine
- Bioactive Molecules, Health and Biotechnology, Centre of Technology and Transformation, Faculty of Sciences, Moulay Ismail University, Meknes 50070, Morocco
| | - Khalid Sellam
- Biology, Environment and Health Team, Faculty of Sciences and Technologies, Moulay Ismail University, Meknes 50070, Morocco
| | - Ali Ait Boughrous
- Biology, Environment and Health Team, Faculty of Sciences and Technologies, Moulay Ismail University, Meknes 50070, Morocco
| | - Natalizia Miceli
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98168 Messina, Italy
| | - Ammar B. Altemimi
- Food Science Department, College of Agriculture, University of Basrah, Basrah 61004, Iraq
| | - Francesco Cacciola
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, 98125 Messina, Italy
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Aberuagba A, Joel EB, Bello AJ, Igunnu A, Malomo SO, Olorunniji FJ. Thermophilic PHP Protein Tyrosine Phosphatases (Cap8C and Wzb) from Mesophilic Bacteria. Int J Mol Sci 2024; 25:1262. [PMID: 38279261 PMCID: PMC10816263 DOI: 10.3390/ijms25021262] [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: 10/29/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024] Open
Abstract
Protein tyrosine phosphatases (PTPs) of the polymerase and histidinol phosphatase (PHP) superfamily with characteristic phosphatase activity dependent on divalent metal ions are found in many Gram-positive bacteria. Although members of this family are co-purified with metal ions, they still require the exogenous supply of metal ions for full activation. However, the specific roles these metal ions play during catalysis are yet to be well understood. Here, we report the metal ion requirement for phosphatase activities of S. aureus Cap8C and L. rhamnosus Wzb. AlphaFold-predicted structures of the two PTPs suggest that they are members of the PHP family. Like other PHP phosphatases, the two enzymes have a catalytic preference for Mn2+, Co2+ and Ni2+ ions. Cap8C and Wzb show an unusual thermophilic property with optimum activities over 75 °C. Consistent with this model, the activity-temperature profiles of the two enzymes are dependent on the divalent metal ion activating the enzyme.
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Affiliation(s)
- Adepeju Aberuagba
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK; (A.A.); (E.B.J.); (A.J.B.)
| | - Enoch B. Joel
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK; (A.A.); (E.B.J.); (A.J.B.)
- Department of Biochemistry, Faculty of Basic Medical Sciences, University of Jos, Jos 930003, Nigeria
| | - Adebayo J. Bello
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK; (A.A.); (E.B.J.); (A.J.B.)
| | - Adedoyin Igunnu
- Department of Biochemistry, Faculty of Life Sciences, University of Ilorin, Ilorin 234031, Nigeria; (A.I.); (S.O.M.)
| | - Sylvia O. Malomo
- Department of Biochemistry, Faculty of Life Sciences, University of Ilorin, Ilorin 234031, Nigeria; (A.I.); (S.O.M.)
| | - Femi J. Olorunniji
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK; (A.A.); (E.B.J.); (A.J.B.)
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3
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Pedrosa-Silva F, Venancio TM. Comparative Genomics Reveals Novel Species and Insights into the Biotechnological Potential, Virulence, and Resistance of Alcaligenes. Genes (Basel) 2023; 14:1783. [PMID: 37761923 PMCID: PMC10530903 DOI: 10.3390/genes14091783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/06/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Alcaligenes is a cosmopolitan bacterial genus that exhibits diverse properties which are beneficial to plants. However, the genomic versatility of Alcaligenes has also been associated with the ability to cause opportunistic infections in humans, raising concerns about the safety of these microorganisms in biotechnological applications. Here, we report an in-depth comparative analysis of Alcaligenes species using all publicly available genomes to investigate genes associated with species, biotechnological potential, virulence, and resistance to multiple antibiotics. Phylogenomic analysis revealed that Alcaligenes consists of at least seven species, including three novel species. Pan-GWAS analysis uncovered 389 species-associated genes, including cold shock proteins (e.g., cspA) and aquaporins (e.g., aqpZ) found exclusively in the water-isolated species, Alcaligenes aquatilis. Functional annotation of plant-growth-promoting traits revealed enrichment of genes for auxin biosynthesis, siderophores, and organic acids. Genes involved in xenobiotic degradation and toxic metal tolerance were also identified. Virulome and resistome profiles provide insights into selective pressures exerted in clinical settings. Taken together, the results presented here provide the grounds for more detailed clinical and ecological studies of the genus Alcaligenes.
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Affiliation(s)
| | - Thiago M. Venancio
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes 28013-602, Brazil;
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Edet UO, Nwaokorie FO, Mbim EN, Asanga EE, Agbor YO, Okoroiwu HU, Edet BO, Umoafia N, Nkang A. Evaluation of Annona muricata extract against Staphylococcus aureus isolate and in-silico activity of bioactive compounds against Capsular protein (Cap5O). BMC Complement Med Ther 2022; 22:192. [PMID: 35854286 PMCID: PMC9297590 DOI: 10.1186/s12906-022-03672-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/11/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Staphylococcus aureus has prevailed against the majority of antibiotics currently in clinical use, making it a significant global public health problem. As a safer alternative, bioactive compounds have been explored. Annona muricata has been shown to possess antimicrobial activity. However, there are few reports on the molecular activity of A. muricata bioactive compounds against S. aureus. Thus, this study was aimed at evaluating the antimicrobial activity of its crude extract as well as investigating the potential of its bioactive compounds against the Cap5O capsular polysaccharides (CPS) of S. aureus via molecular docking.
Methods
Collection of plant leaves, preparation of extracts, anti-nutrient analysis, phytochemical screening via crude method and gas chromatography-mass spectrophotometer (GC-MS), isolation and characterization of S. aureus and the antimicrobial activity test were all done using standard protocols. Molecular docking was done using the MCULE online tool with emphasis on docking scores, toxicity, and other properties.
Results
Crude screening of the extracts showed the presence of polyphenols, hydroxyanthraquinones, reducing compounds, flavonoids, saponins, glycosides, alkaloids, anthraquinones, phlobatannins and tannins in different concentrations. Anti-nutrient analysis showed the presence of allowable levels of evaluated anti-nutrients. GC-MS revealed a total of twenty-nine (29) bioactive compounds, out of which only 4 (13.80%) docked without toxicity and these were bicyclo[4.1.0]heptan-2-one 6-methyl, trichloromethane, carbonic acid 2-dimethylaminoethyl propyl ester, and 1-methyl-4-phenyl-5-thioxo-1,2,4-triazolidin-3-one on either the NAD-binding or C-terminal substrate binding domain of Cap5O.
Conclusion
Results obtained show that Cap5O could be a potential drug target for multi-drug resistant S. aureus, however, further studies aimed at evaluating these bioactive compounds individually and in combination are highly needed.
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Lamont RJ, Miller DP. Tyrosine Kinases and Phosphatases: Enablers of the Porphyromonas gingivalis Lifestyle. FRONTIERS IN ORAL HEALTH 2022; 3:835586. [PMID: 35224543 PMCID: PMC8863745 DOI: 10.3389/froh.2022.835586] [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: 12/14/2021] [Accepted: 01/17/2022] [Indexed: 11/17/2022] Open
Abstract
Tyrosine phosphorylation modifies the functionality of bacterial proteins and forms the basis of a versatile and tunable signal transduction system. The integrated action of tyrosine kinases and phosphatases controls bacterial processes important for metabolism and virulence. Porphyromonas gingivalis, a keystone pathogen in periodontal disease, possesses an extensive phosphotyrosine signaling network. The phosphorylation reaction is catalyzed by a bacterial tyrosine (BY) kinase, Ptk1, and a Ubiquitous bacterial Kinase UbK1. Dephosphorylation is mediated by a low-molecular-weight phosphatase, Ltp1 and a polymerase and histidinol phosphatase, Php1. Phosphotyrosine signaling controls exopolysaccharide production, gingipain activity, oxidative stress responses and synergistic community development with Streptococcus gordonii. Additionally, Ltp1 is secreted extracellularly and can be delivered inside gingival epithelial cells where it can override host cell signaling and readjust cellular physiology. The landscape of coordinated tyrosine kinase and phosphatase activity thus underlies the adaptive responses of P. gingivalis to both the polymicrobial environment of bacterial communities and the intracellular environment of gingival epithelial cells.
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Affiliation(s)
- Richard J. Lamont
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, United States
- *Correspondence: Richard J. Lamont
| | - Daniel P. Miller
- Department of Microbiology and Immunology, Virginia Commonwealth University Richmond, Richmond, VA, United States
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Denis-Quanquin S, Bartocci A, Szczepaniak F, Riobé F, Maury O, Dumont E, Giraud N. Capturing the dynamic association between a tris-dipicolinate lanthanide complex and a decapeptide: a combined paramagnetic NMR and molecular dynamics exploration. Phys Chem Chem Phys 2021; 23:11224-11232. [PMID: 34010374 DOI: 10.1039/d0cp06570f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the realm of biomolecules, peptides can present a large diversity of structures. Our study sheds new light on the structural interplay between a tris-dipicolinate lanthanide probe and a decapeptide SASYKTLPRG. Although a rather trivial, electrostatically driven interaction was expected, the combination of paramagnetic NMR and molecular dynamics simulations reveals a highly dynamic association process and allows for providing extensive insights into the interaction sites and their occupancy. This study highlights the importance of a large conformational sampling to reconcile characteristic time in NMR with molecular dynamics simulations, where sampling in the microsecond range is needed. This study opens the door for a detailed mechanistic elucidation of the early steps of lanthanide complex-peptide or lanthanide complex-protein interaction or self-assembly processes.
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Affiliation(s)
- Sandrine Denis-Quanquin
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342, Lyon, France.
| | - Alessio Bartocci
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342, Lyon, France.
| | - Florence Szczepaniak
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342, Lyon, France.
| | - Francois Riobé
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342, Lyon, France.
| | - Olivier Maury
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342, Lyon, France.
| | - Elise Dumont
- Univ. Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, Laboratoire de Chimie, F69342, Lyon, France. and Institut Universitaire de France, 5 rue Descartes, 75005, Paris, France
| | - Nicolas Giraud
- Université de Paris, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR CNRS 8601, Paris, France.
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Engilberge S, Riobé F, Wagner T, Di Pietro S, Breyton C, Franzetti B, Shima S, Girard E, Dumont E, Maury O. Unveiling the Binding Modes of the Crystallophore, a Terbium-based Nucleating and Phasing Molecular Agent for Protein Crystallography. Chemistry 2018; 24:9739-9746. [DOI: 10.1002/chem.201802172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/18/2018] [Indexed: 11/10/2022]
Affiliation(s)
| | - François Riobé
- Université de Lyon; École Normale Supérieure de Lyon; CNRS, Université Claude Bernard Lyon 1; Laboratoire de Chimie UMR 518; F-69342 Lyon France
| | - Tristan Wagner
- Microbial Protein Structure Group; Max Planck Institute for Terrestrial Microbiology; Karl-von-Frisch-Str. 10 35043 Marburg Germany
| | - Sebastiano Di Pietro
- Université de Lyon; École Normale Supérieure de Lyon; CNRS, Université Claude Bernard Lyon 1; Laboratoire de Chimie UMR 518; F-69342 Lyon France
| | - Cécile Breyton
- Univ Grenoble Alpes; CEA; CNRS, IBS; 38000 Grenoble France
| | | | - Seigo Shima
- Microbial Protein Structure Group; Max Planck Institute for Terrestrial Microbiology; Karl-von-Frisch-Str. 10 35043 Marburg Germany
| | - Eric Girard
- Univ Grenoble Alpes; CEA; CNRS, IBS; 38000 Grenoble France
| | - Elise Dumont
- Université de Lyon; École Normale Supérieure de Lyon; CNRS, Université Claude Bernard Lyon 1; Laboratoire de Chimie UMR 518; F-69342 Lyon France
| | - Olivier Maury
- Université de Lyon; École Normale Supérieure de Lyon; CNRS, Université Claude Bernard Lyon 1; Laboratoire de Chimie UMR 518; F-69342 Lyon France
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8
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Denis-Quanquin S, Riobé F, Delsuc MA, Maury O, Giraud N. Paramagnetic DOSY: An Accurate Tool for the Analysis of the Supramolecular Interactions between Lanthanide Complexes and Proteins. Chemistry 2016; 22:18123-18131. [DOI: 10.1002/chem.201603460] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Indexed: 01/27/2023]
Affiliation(s)
- Sandrine Denis-Quanquin
- Laboratoire de Chimie; UMR 5182, CNRS, Ecole Normale Supérieure de Lyon, Université de Lyon; 46 allée d'Italie 69007 Lyon France
| | - François Riobé
- Laboratoire de Chimie; UMR 5182, CNRS, Ecole Normale Supérieure de Lyon, Université de Lyon; 46 allée d'Italie 69007 Lyon France
| | - Marc-André Delsuc
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC); UMR 7104; 1 rue Laurent Fries, BP 10142 67404 Illkirch cedex France
| | - Olivier Maury
- Laboratoire de Chimie; UMR 5182, CNRS, Ecole Normale Supérieure de Lyon, Université de Lyon; 46 allée d'Italie 69007 Lyon France
| | - Nicolas Giraud
- Equipe RMN en milieu orienté, ICMMO, UMR CNRS 8182, Univ Paris Sud; Université Paris-Saclay; 91405 Orsay cedex France
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9
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Medeot DB, Romina Rivero M, Cendoya E, Contreras-Moreira B, Rossi FA, Fischer SE, Becker A, Jofré E. Sinorhizobium meliloti low molecular mass phosphotyrosine phosphatase SMc02309 modifies activity of the UDP-glucose pyrophosphorylase ExoN involved in succinoglycan biosynthesis. MICROBIOLOGY-SGM 2016; 162:552-563. [PMID: 26813656 DOI: 10.1099/mic.0.000239] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In Gram-negative bacteria, tyrosine phosphorylation has been shown to play a role in the control of exopolysaccharide (EPS) production. This study demonstrated that the chromosomal ORF SMc02309 from Sinorhizobium meliloti 2011 encodes a protein with significant sequence similarity to low molecular mass protein-tyrosine phosphatases (LMW-PTPs), such as the Escherichia coli Wzb. Unlike other well-characterized EPS biosynthesis gene clusters, which contain neighbouring LMW-PTPs and kinase, the S. meliloti succinoglycan (EPS I) gene cluster located on megaplasmid pSymB does not encode a phosphatase. Biochemical assays revealed that the SMc02309 protein hydrolyses p-nitrophenyl phosphate (p-NPP) with kinetic parameters similar to other bacterial LMW-PTPs. Furthermore, we show evidence that SMc02309 is not the LMW-PTP of the bacterial tyrosine-kinase (BY-kinase) ExoP. Nevertheless, ExoN, a UDP-glucose pyrophosphorylase involved in the first stages of EPS I biosynthesis, is phosphorylated at tyrosine residues and constitutes an endogenous substrate of the SMc02309 protein. Additionally, we show that the UDP-glucose pyrophosphorylase activity is modulated by SMc02309-mediated tyrosine dephosphorylation. Moreover, a mutation in the SMc02309 gene decreases EPS I production and delays nodulation on Medicago sativa roots.
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Affiliation(s)
- Daniela B Medeot
- Department of Natural Sciences, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
- Department of Molecular Biology, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
| | - María Romina Rivero
- Department of Natural Sciences, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
| | - Eugenia Cendoya
- Department of Natural Sciences, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
| | - Bruno Contreras-Moreira
- Laboratory of Computational Biology, Department of Genetics and Plant Production, Estación Experimental de Aula Dei/CSIC, Av. Montañana 1005, Zaragoza, Spain
| | - Fernando A Rossi
- Department of Natural Sciences, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
| | - Sonia E Fischer
- Department of Natural Sciences, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
| | - Anke Becker
- LOEWE-Center for Synthetic Microbiology, Philipps-Universität Marburg, D-35032, Marburg, Germany
| | - Edgardo Jofré
- Department of Natural Sciences, FCEFQyN, National University of Río Cuarto, Ruta Nacional 36 Km 601, Córdoba, Argentina
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10
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Freas N, Newton P, Perozich J. Analysis of nucleotide diphosphate sugar dehydrogenases reveals family and group-specific relationships. FEBS Open Bio 2016; 6:77-89. [PMID: 27047744 PMCID: PMC4794789 DOI: 10.1002/2211-5463.12022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 12/03/2015] [Accepted: 12/14/2015] [Indexed: 12/02/2022] Open
Abstract
UDP‐glucose dehydrogenase (UDPGDH), UDP‐N‐acetyl‐mannosamine dehydrogenase (UDPNAMDH) and GDP‐mannose dehydrogenase (GDPMDH) belong to a family of NAD+‐linked 4‐electron‐transfering oxidoreductases called nucleotide diphosphate sugar dehydrogenases (NDP‐SDHs). UDPGDH is an enzyme responsible for converting UDP‐d‐glucose to UDP‐d‐glucuronic acid, a product that has different roles depending on the organism in which it is found. UDPNAMDH and GDPMDH convert UDP‐N‐acetyl‐mannosamine to UDP‐N‐acetyl‐mannosaminuronic acid and GDP‐mannose to GDP‐mannuronic acid, respectively, by a similar mechanism to UDPGDH. Their products are used as essential building blocks for the exopolysaccharides found in organisms like Pseudomonas aeruginosa and Staphylococcus aureus. Few studies have investigated the relationships between these enzymes. This study reveals the relationships between the three enzymes by analysing 229 amino acid sequences. Eighteen invariant and several other highly conserved residues were identified, each serving critical roles in maintaining enzyme structure, coenzyme binding or catalytic function. Also, 10 conserved motifs that included most of the conserved residues were identified and their roles proposed. A phylogenetic tree demonstrated relationships between each group and verified group assignment. Finally, group entropy analysis identified novel conservations unique to each NDP‐SDH group, including residue positions critical to NDP‐sugar substrate interaction, enzyme structure and intersubunit contact. These positions may serve as targets for future research. Enzymes UDP‐glucose dehydrogenase (UDPGDH, EC 1.1.1.22).
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Affiliation(s)
- Nicholas Freas
- Department of Biology Franciscan University of Steubenville OH USA
| | - Peter Newton
- Department of Biology Franciscan University of Steubenville OH USA
| | - John Perozich
- Department of Biology Franciscan University of Steubenville OH USA
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11
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Pampa KJ, Lokanath NK, Girish TU, Kunishima N, Rai VR. Crystal structure of product-bound complex of UDP-N-acetyl-d-mannosamine dehydrogenase from Pyrococcus horikoshii OT3. Biochem Biophys Res Commun 2014; 453:662-7. [PMID: 25305481 DOI: 10.1016/j.bbrc.2014.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 10/05/2014] [Indexed: 10/24/2022]
Abstract
UDP-N-acetyl-d-mannosamine dehydrogenase (UDP-d-ManNAcDH) belongs to UDP-glucose/GDP-mannose dehydrogenase family and catalyzes Uridine-diphospho-N-acetyl-d-mannosamine (UDP-d-ManNAc) to Uridine-diphospho-N-acetyl-d-mannosaminuronic acid (UDP-d-ManNAcA) through twofold oxidation of NAD(+). In order to reveal the structural features of the Pyrococcus horikoshii UDP-d-ManNAcADH, we have determined the crystal structure of the product-bound enzyme by X-ray diffraction to resolution of 1.55Å. The protomer folds into three distinct domains; nucleotide binding domain (NBD), substrate binding domain (SBD) and oligomerization domain (OD, involved in the dimerization). The clear electron density of the UDP-d-ManNAcA is observed and the residues binding are identified for the first time. Crystal structures reveal a tight dimeric polymer chains with product-bound in all the structures. The catalytic residues Cys258 and Lys204 are conserved. The Cys258 acts as catalytic nucleophile and Lys204 as acid/base catalyst. The product is directly interacts with residues Arg211, Thr249, Arg244, Gly255, Arg289, Lys319 and Arg398. In addition, the structural parameters responsible for thermostability and oligomerization of the three dimensional structure are analyzed.
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Affiliation(s)
- K J Pampa
- Department of Studies in Microbiology, University of Mysore, Mysore 570 006, India.
| | - N K Lokanath
- Department of Studies in Physics, University of Mysore, Mysore 570 006, India
| | - T U Girish
- Department of General Surgery, JSS Medical College and Hospital, JSS University, Mysore 570 015, India
| | - N Kunishima
- Advanced Protein Crystallography Research Group, RIKEN SPring-8 Center, Harima Institute, Hyogo 679-5148, Japan
| | - V R Rai
- Department of Studies in Microbiology, University of Mysore, Mysore 570 006, India
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12
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Standish AJ, Morona R. The role of bacterial protein tyrosine phosphatases in the regulation of the biosynthesis of secreted polysaccharides. Antioxid Redox Signal 2014; 20:2274-89. [PMID: 24295407 PMCID: PMC3995119 DOI: 10.1089/ars.2013.5726] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
SIGNIFICANCE Tyrosine phosphorylation and associated protein tyrosine phosphatases are gaining prominence as critical mechanisms in the regulation of fundamental processes in a wide variety of bacteria. In particular, these phosphatases have been associated with the control of the biosynthesis of capsular polysaccharides and extracellular polysaccharides, critically important virulence factors for bacteria. RECENT ADVANCES Deletion and overexpression of the phosphatases result in altered polysaccharide biosynthesis in a range of bacteria. The recent structures of associated auto-phosphorylating tyrosine kinases have suggested that the phosphatases may be critical for the cycling of the kinases between monomers and higher order oligomers. CRITICAL ISSUES Additional substrates of the phosphatases apart from cognate kinases are currently being identified. These are likely to be critical to our understanding of the mechanism by which polysaccharide biosynthesis is regulated. FUTURE DIRECTIONS Ultimately, these protein tyrosine phosphatases are an attractive target for the development of novel antimicrobials. This is particularly the case for the polymerase and histidinol phosphatase family, which is predominantly found in bacteria. Furthermore, the determination of bacterial tyrosine phosphoproteomes will likely help to uncover the fundamental roles, mechanism, and critical importance of these phosphatases in a wide range of bacteria.
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Affiliation(s)
- Alistair J Standish
- School of Molecular and Biomedical Science, University of Adelaide , Adelaide, Australia
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Wright CJ, Xue P, Hirano T, Liu C, Whitmore SE, Hackett M, Lamont RJ. Characterization of a bacterial tyrosine kinase in Porphyromonas gingivalis involved in polymicrobial synergy. Microbiologyopen 2014; 3:383-94. [PMID: 24811194 PMCID: PMC4082711 DOI: 10.1002/mbo3.177] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/18/2014] [Accepted: 03/25/2014] [Indexed: 12/30/2022] Open
Abstract
Interspecies communication between Porphyromonas gingivalis and Streptococcus gordonii underlies the development of synergistic dual species communities. Contact with S. gordonii initiates signal transduction within P. gingivalis that is based on protein tyrosine (de)phosphorylation. In this study, we characterize a bacterial tyrosine (BY) kinase (designated Ptk1) of P. gingivalis and demonstrate its involvement in interspecies signaling. Ptk1 can utilize ATP for autophosphorylation and is dephosphorylated by the P. gingivalis tyrosine phosphatase, Ltp1. Community development with S. gordonii is severely abrogated in a ptk1 mutant of P. gingivalis, indicating that tyrosine kinase activity is required for maximal polymicrobial synergy. Ptk1 controls the levels of the transcriptional regulator CdhR and the fimbrial adhesin Mfa1 which mediates binding to S. gordonii. The ptk1 gene is in an operon with two genes involved in exopolysaccharide synthesis, and similar to other BY kinases, Ptk1 is necessary for exopolysaccharide production in P. gingivalis. Ptk1 can phosphorylate the capsule related proteins PGN_0224, a UDP-acetyl-mannosamine dehydrogenase, and PGN_0613, a UDP-glucose dehydrogenase, in P. gingivalis. Knockout of ptk1 in an encapsulated strain of P. gingivalis resulted in loss of capsule production. Collectively these results demonstrate that the P. gingivalis Ptk1 BY kinase regulates interspecies communication and controls heterotypic community development with S. gordonii through adjusting the levels of the Mfa1 adhesin and exopolysaccharide.
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Affiliation(s)
- Christopher J Wright
- Oral Health and Systemic Disease, University of Louisville, Louisville, Kentucky, 40202
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Comparative analysis of the Tyr-kinases CapB1 and CapB2 fused to their cognate modulators CapA1 and CapA2 from Staphylococcus aureus. PLoS One 2013; 8:e75958. [PMID: 24146800 PMCID: PMC3795738 DOI: 10.1371/journal.pone.0075958] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/19/2013] [Indexed: 11/18/2022] Open
Abstract
A particular class of tyrosine-kinases sharing no structural similarity with eukaryotic tyrosine-kinases has been evidenced in a large array of bacterial species. These bacterial tyrosine-kinases are able to autophosphorylate on a C-terminal tyrosine-rich motif. Their autophosphorylation has been shown to play a crucial role in the biosynthesis or export of capsular polysaccharide. The analysis of the first crystal structure of the staphylococcal tyrosine kinase CapB2 associated with the activating domain of the transmembrane modulator CapA1 had brought conclusive explanation for both the autophosphorylation and activation processes. In order to explain why CapA1 activates CapB2 more efficiently than its cognate transmembrane modulator CapA2, we solved the crystal structure of CapA2B2 and compared it with the previously published structure of CapA1B2. This structural analysis did not provide the expected clues about the activation discrepancy observed between the two modulators. Staphylococcus aureus also encodes for a CapB2 homologue named CapB1 displaying more than 70% sequence similarity and being surprisingly nearly unable to autophosphorylate. We solved the crystal structure of CapA1B1 and carefully compare it with the structure of CapA1B2. The active sites of both proteins are highly conserved and the biochemical characterization of mutant proteins engineered to test the importance of small structural discrepancies identified between the two structures did not explain the inactivity of CapB1. We thus tested if CapB1 could phosphorylate other protein substrates or hydrolyze ATP. However, no activity could be detected in our in vitro assays. Taken together, these data question about the biological role of the homologous protein pairs CapA1/CapB1 and CapA2/CapB2 and we discuss about several possible interpretations.
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D'Aléo A, Dumont E, Maury O, Giraud N. A multidimensional approach to the analysis of chemical shift titration experiments in the frame of a multiple reaction scheme. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2013; 51:641-648. [PMID: 23955873 DOI: 10.1002/mrc.3994] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 06/28/2013] [Accepted: 07/11/2013] [Indexed: 06/02/2023]
Abstract
We present a method for fitting curves acquired by chemical shift titration experiments, in the frame of a three-step complexation mechanism. To that end, we have implemented a fitting procedure, based on a nonlinear least squares fitting method, that determines the best fitting curve using a "coarse grid search" approach and provides distributions for the different parameters of the complexation model that are compatible with the experimental precision. The resulting analysis protocol is first described and validated on a theoretical data set. We show its ability to converge to the true parameter values of the simulated reaction scheme and to evaluate complexation constants together with multidimensional uncertainties. Then, we apply this protocol to the study of the supramolecular interactions, in aqueous solution, between a lanthanide complex and three different model molecules, using NMR titration experiments. We show that within the uncertainty that can be evaluated from the parameter distributions generated during our analysis, the affinities between the lanthanide derivative and each model molecule can be discriminated, and we propose values for the corresponding thermodynamic constants.
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Affiliation(s)
- Anthony D'Aléo
- Laboratoire de Chimie, UMR 5182 CNRS, ENS-Lyon, 46 allée d'Italie, 69364, Lyon cedex 07, France
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Mainprize IL, Bean JD, Bouwman C, Kimber MS, Whitfield C. The UDP-glucose dehydrogenase of Escherichia coli K-12 displays substrate inhibition by NAD that is relieved by nucleotide triphosphates. J Biol Chem 2013; 288:23064-74. [PMID: 23792965 DOI: 10.1074/jbc.m113.486613] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
UDP-glucose dehydrogenase (Ugd) generates UDP-glucuronic acid, an important precursor for the production of many hexuronic acid-containing bacterial surface glycostructures. In Escherichia coli K-12, Ugd is important for biosynthesis of the environmentally regulated exopolysaccharide known as colanic acid, whereas in other E. coli isolates, the same enzyme is required for production of the constitutive group 1 capsular polysaccharides, which act as virulence determinants. Recent studies have implicated tyrosine phosphorylation in the activation of Ugd from E. coli K-12, although it is not known if this is a feature shared by bacterial Ugd proteins. The activities of Ugd from E. coli K-12 and from the group 1 capsule prototype (serotype K30) were compared. Surprisingly, for both enzymes, site-directed Tyr → Phe mutants affecting the previously proposed phosphorylation site retained similar kinetic properties to the wild-type protein. Purified Ugd from E. coli K-12 had significant levels of NAD substrate inhibition, which could be alleviated by the addition of ATP and several other nucleotide triphosphates. Mutations in a previously identified UDP-glucuronic acid allosteric binding site decreased the binding affinity of the nucleotide triphosphate. Ugd from E. coli serotype K30 was not inhibited by NAD, but its activity still increased in the presence of ATP.
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Affiliation(s)
- Iain L Mainprize
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Dumont E, Pompidor G, D'Aléo A, Vicat J, Toupet L, Kahn R, Girard E, Maury O, Giraud N. Exploration of the supramolecular interactions involving tris-dipicolinate lanthanide complexes in protein crystals by a combined biostructural, computational and NMR study. Phys Chem Chem Phys 2013; 15:18235-42. [DOI: 10.1039/c3cp53671h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Grangeasse C, Nessler S, Mijakovic I. Bacterial tyrosine kinases: evolution, biological function and structural insights. Philos Trans R Soc Lond B Biol Sci 2012; 367:2640-55. [PMID: 22889913 DOI: 10.1098/rstb.2011.0424] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Reversible protein phosphorylation is a major mechanism in the regulation of fundamental signalling events in all living organisms. Bacteria have been shown to possess a versatile repertoire of protein kinases, including histidine and aspartic acid kinases, serine/threonine kinases, and more recently tyrosine and arginine kinases. Tyrosine phosphorylation is today recognized as a key regulatory device of bacterial physiology, linked to exopolysaccharide production, virulence, stress response and DNA metabolism. However, bacteria have evolved tyrosine kinases that share no resemblance with their eukaryotic counterparts and are unique in exploiting the ATP/GTP-binding Walker motif to catalyse autophosphorylation and substrate phosphorylation on tyrosine. These enzymes, named BY-kinases (for Bacterial tYrosine kinases), have been identified in a majority of sequenced bacterial genomes, and to date no orthologues have been found in Eukarya. The aim of this review was to present the most recent knowledge about BY-kinases by focusing primarily on their evolutionary origin, structural and functional aspects, and emerging regulatory potential based on recent bacterial phosphoproteomic studies.
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Affiliation(s)
- Christophe Grangeasse
- Bases Moléculaires et Structurales des Systèmes Infectieux, IBCP, CNRS, Université de Lyon, UMR 5086, 7 passage du Vercors, 69367 Lyon, France.
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Corcionivoschi N, Alvarez LA, Sharp TH, Strengert M, Alemka A, Mantell J, Verkade P, Knaus UG, Bourke B. Mucosal reactive oxygen species decrease virulence by disrupting Campylobacter jejuni phosphotyrosine signaling. Cell Host Microbe 2012; 12:47-59. [PMID: 22817987 PMCID: PMC3749511 DOI: 10.1016/j.chom.2012.05.018] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Revised: 03/16/2012] [Accepted: 05/21/2012] [Indexed: 12/22/2022]
Abstract
Reactive oxygen species (ROS) play key roles in mucosal defense, yet how they are induced and the consequences for pathogens are unclear. We report that ROS generated by epithelial NADPH oxidases (Nox1/Duox2) during Campylobacter jejuni infection impair bacterial capsule formation and virulence by altering bacterial signal transduction. Upon C. jejuni invasion, ROS released from the intestinal mucosa inhibit the bacterial phosphotyrosine network that is regulated by the outer-membrane tyrosine kinase Cjtk (Cj1170/OMP50). ROS-mediated Cjtk inactivation results in an overall decrease in the phosphorylation of C. jejuni outer-membrane/periplasmic proteins, including UDP-GlcNAc/Glc 4-epimerase (Gne), an enzyme required for N-glycosylation and capsule formation. Cjtk positively regulates Gne by phosphorylating an active site tyrosine, while loss of Cjtk or ROS treatment inhibits Gne activity, causing altered polysaccharide synthesis. Thus, epithelial NADPH oxidases are an early antibacterial defense system in the intestinal mucosa that modifies virulence by disrupting bacterial signaling.
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Affiliation(s)
- Nicolae Corcionivoschi
- National Children’s Research Centre, Our Lady’s Children’s Hospital Crumlin, Dublin 12, Ireland
| | - Luis A. Alvarez
- Conway Institute, School of Medicine and Medical Science, University College Dublin, Dublin 4, Ireland
| | | | - Monika Strengert
- Conway Institute, School of Medicine and Medical Science, University College Dublin, Dublin 4, Ireland
| | - Abofu Alemka
- National Children’s Research Centre, Our Lady’s Children’s Hospital Crumlin, Dublin 12, Ireland
| | - Judith Mantell
- School of Biochemistry
- Wolfson Bioimaging Facility, University of Bristol, Bristol, England
| | - Paul Verkade
- School of Biochemistry
- Wolfson Bioimaging Facility, University of Bristol, Bristol, England
| | - Ulla G. Knaus
- Conway Institute, School of Medicine and Medical Science, University College Dublin, Dublin 4, Ireland
| | - Billy Bourke
- Conway Institute, School of Medicine and Medical Science, University College Dublin, Dublin 4, Ireland
- National Children’s Research Centre, Our Lady’s Children’s Hospital Crumlin, Dublin 12, Ireland
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Abstract
Protein phosphorylation on tyrosine has emerged as a key device in the control of numerous cellular functions in bacteria. In this article, we review the structure and function of bacterial tyrosine kinases and phosphatases. Phosphorylation is catalyzed by autophosphorylating adenosine triphosphate-dependent enzymes (bacterial tyrosine (BY) kinases) that are characterized by the presence of Walker motifs. The reverse reaction is catalyzed by three classes of enzymes: the eukaryotic-like phosphatases (PTPs) and dual-specific phosphatases; the low molecular weight protein-tyrosine phosphatases (LMW-PTPs); and the polymerase–histidinol phosphatases (PHP). Many BY kinases and tyrosine phosphatases can utilize host cell proteins as substrates, thereby contributing to bacterial pathogenicity. Bacterial tyrosine phosphorylation/dephosphorylation is also involved in biofilm formation and community development. The Porphyromonas gingivalis tyrosine phosphatase Ltp1 is involved in a restraint pathway that regulates heterotypic community development with Streptococcus gordonii. Ltp1 is upregulated by contact with S. gordonii and Ltp1 activity controls adhesin expression and levels of the interspecies signal AI-2.
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