1
|
Svetlova AO, Karaseva MA, Berdyshev IM, Chukhontseva KN, Pobeguts OV, Galyamina MA, Smirnov IP, Polyakov NB, Zavialova MG, Kostrov SV, Demidyuk IV. Protease S of entomopathogenic bacterium Photorhabdus laumondii: expression, purification and effect on greater wax moth Galleria mellonella. Mol Biol Rep 2024; 51:713. [PMID: 38824247 DOI: 10.1007/s11033-024-09654-8] [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: 03/05/2024] [Accepted: 05/20/2024] [Indexed: 06/03/2024]
Abstract
BACKGROUND Protease S (PrtS) from Photorhabdus laumondii belongs to the group of protealysin-like proteases (PLPs), which are understudied factors thought to play a role in the interaction of bacteria with other organisms. Since P. laumondii is an insect pathogen and a nematode symbiont, the analysis of the biological functions of PLPs using the PrtS model provides novel data on diverse types of interactions between bacteria and hosts. METHODS AND RESULTS Recombinant PrtS was produced in Escherichia coli. Efficient inhibition of PrtS activity by photorin, a recently discovered emfourin-like protein inhibitor from P. laumondii, was demonstrated. The Galleria mellonella was utilized to examine the insect toxicity of PrtS and the impact of PrtS on hemolymph proteins in vitro. The insect toxicity of PrtS is reduced compared to protease homologues from non-pathogenic bacteria and is likely not essential for the infection process. However, using proteomic analysis, potential PrtS targets have been identified in the hemolymph. CONCLUSIONS The spectrum of identified proteins indicates that the function of PrtS is to modulate the insect immune response. Further studies of PLPs' biological role in the PrtS and P. laumondii model must clarify the details of PrtS interaction with the insect immune system during bacterial infection.
Collapse
Affiliation(s)
| | | | | | | | - Olga V Pobeguts
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Maria A Galyamina
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Igor P Smirnov
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Nikita B Polyakov
- Gamaleya National Research Center of Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, Russia
| | - Maria G Zavialova
- Skolkovo Institute of Science and Technology, Moscow, Russia
- Institute of Biomedical Chemistry, Moscow, Russia
| | | | - Ilya V Demidyuk
- National Research Centre "Kurchatov Institute", Moscow, Russia.
| |
Collapse
|
2
|
Li BJ, He WX, Hua H, Wei P. Potential correlation of oral flora with pemphigus vulgaris - A case control study. J Dent Sci 2023; 18:1612-1620. [PMID: 37799932 PMCID: PMC10547953 DOI: 10.1016/j.jds.2023.01.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/30/2023] [Indexed: 02/17/2023] Open
Abstract
Background/purpose Oral flora is related to various immune-related diseases. Herein we explored the characteristics of oral flora in patients with pemphigus vulgaris (PV) and analyzed the correlation between oral flora and PV. Materials and methods Twenty-two untreated patients with PV and 12 healthy controls (HC) were included in this case-control study. The characteristics of salivary microbiome were assessed by high-throughput sequencing using the 16S rRNA Illumina MiSeq approach, and differences between the PV and HC groups were determined. The Kyoto Encyclopedia of Genes and Genomes (KEGG) database was applied to screen key metabolic pathways and preliminarily explore potential mechanisms underlying PV occurrence and development. Results The abundance of oral flora in the PV group was significantly lower than that in the HC group, and there were characteristic changes. The relative abundance of Prevotella and Agrobacterium in the PV group was significantly higher than that in the HC group (P < 0.05) and that of Neisseria, Lautropia, and Fusobacterium was significantly lower (P < 0.05). There was a linear correlation between Prevotella and serum Dsg3 level in PV. KEGG pathway analyses indicated significant differences in nine metabolic pathways between the PV and HC groups (P < 0.05), namely carbohydrate metabolism, digestive system, neurodegenerative disease, glycan biosynthesis and metabolism, drug resistance: antimicrobial, infectious disease: viral, circulatory system, excretory system, and nervous system. Conclusion The oral flora of patients with PV presented characteristic changes, and several metabolic pathways were affected, including N-glycan biosynthesis and metabolism. Prevotella spp. appear to require the most attention in PV. We believe that oral flora dysbacteriosis contributes to PV occurrence and development.
Collapse
Affiliation(s)
- Bing-jie Li
- Department of Oral Medicine, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Wen-xiu He
- Department of Oral Medicine, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Hong Hua
- Department of Oral Medicine, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Pan Wei
- Department of Oral Medicine, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| |
Collapse
|
3
|
Berdyshev IM, Svetlova AO, Chukhontseva KN, Karaseva MA, Varizhuk AM, Filatov VV, Kleymenov SY, Kostrov SV, Demidyuk IV. Production and Characterization of Photorin, a Novel Proteinaceous Protease Inhibitor from the Entomopathogenic Bacteria Photorhabdus laumondii. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1356-1367. [PMID: 37770402 DOI: 10.1134/s0006297923090158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/27/2023] [Accepted: 06/17/2023] [Indexed: 09/30/2023]
Abstract
Entomopathogenic bacteria of the genus Photorhabdus secrete protease S (PrtS), which is considered a virulence factor. We found that in the Photorhabdus genomes, immediately after the prtS genes, there are genes that encode small hypothetical proteins homologous to emfourin, a recently discovered protein inhibitor of metalloproteases. The gene of emfourin-like inhibitor from Photorhabdus laumondii subsp. laumondii TT01 was cloned and expressed in Escherichia coli cells. The recombinant protein, named photorin (Phin), was purified by metal-chelate affinity and gel permeation chromatography and characterized. It has been established that Phin is a monomer and inhibits activity of protealysin and thermolysin, which, similar to PrtS, belong to the M4 peptidase family. Inhibition constants were 1.0 ± 0.3 and 10 ± 2 µM, respectively. It was also demonstrated that Phin is able to suppress proteolytic activity of P. laumondii culture fluid (half-maximal inhibition concentration 3.9 ± 0.3 nM). Polyclonal antibodies to Phin were obtained, and it was shown by immunoblotting that P. laumondii cells produce Phin. Thus, the prtS genes in entomopathogenic bacteria of the genus Photorhabdus are colocalized with the genes of emfourin-like inhibitors, which probably regulate activity of the enzyme during infection. Strict regulation of the activity of proteolytic enzymes is essential for functioning of all living systems. At the same time, the principles of regulation of protease activity by protein inhibitors remain poorly understood. Bacterial protease-inhibitor pairs, such as the PrtS and Phin pair, are promising models for in vivo studies of these principles. Bacteria of the genus Photorhabdus have a complex life cycle with multiple hosts, being both nematode symbionts and powerful insect pathogens. This provides a unique opportunity to use the PrtS and Phin pair as a model for studying the principles of protease activity regulation by proteinaceous inhibitors in the context of bacterial interactions with different types of hosts.
Collapse
Affiliation(s)
- Igor M Berdyshev
- National Research Centre "Kurchatov Institute", Moscow, 123182, Russia
| | | | | | - Maria A Karaseva
- National Research Centre "Kurchatov Institute", Moscow, 123182, Russia
| | - Anna M Varizhuk
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, 141701, Russia
| | - Vasily V Filatov
- Semenov Federal Research Center for Chemical Physics, Chernogolovka Branch, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia
| | - Sergey Y Kleymenov
- Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, 119071, Russia
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, Moscow, 119334, Russia
| | - Sergey V Kostrov
- National Research Centre "Kurchatov Institute", Moscow, 123182, Russia
| | - Ilya V Demidyuk
- National Research Centre "Kurchatov Institute", Moscow, 123182, Russia.
| |
Collapse
|
4
|
Jin M, He B, Cai X, Lei Z, Sun T. Research progress of nanoparticle targeting delivery systems in bacterial infections. Colloids Surf B Biointerfaces 2023; 229:113444. [PMID: 37453264 DOI: 10.1016/j.colsurfb.2023.113444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/28/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Bacterial infection is a huge threat to the health of human beings and animals. The abuse of antibiotics have led to the occurrence of bacterial multidrug resistance, which have become a difficult problem in the treatment of clinical infections. Given the outstanding advantages of nanodrug delivery systems in cancer treatment, many scholars have begun to pay attention to their application in bacterial infections. However, due to the similarity of the microenvironment between bacterial infection lesions and cancer sites, the targeting and accuracy of traditional microenvironment-responsive nanocarriers are questionable. Therefore, finding new specific targets has become a new development direction of nanocarriers in bacterial prevention and treatment. This article reviews the infectious microenvironment induced by bacteria and a series of virulence factors of common pathogenic bacteria and their physiological functions, which may be used as potential targets to improve the targeting accuracy of nanocarriers in lesions.
Collapse
Affiliation(s)
- Ming Jin
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Bin He
- Institute of Animal Husbandry and Veterinary, Wuhan Academy of Agricultural Sciences, China
| | - Xiaoli Cai
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Zhixin Lei
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Taolei Sun
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| |
Collapse
|
5
|
Li L, Jiang Y, Zhu Q, Liu D, Chang M, Wang Y, Xi R, Wang W. Hyaluronan with Different Molecular Weights Can Affect the Gut Microbiota and Pathogenetic Progression of Post-Intensive Care Syndrome Mice in Different Ways. Int J Mol Sci 2023; 24:ijms24119757. [PMID: 37298710 DOI: 10.3390/ijms24119757] [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: 04/28/2023] [Revised: 05/25/2023] [Accepted: 06/02/2023] [Indexed: 06/12/2023] Open
Abstract
Post-intensive care syndrome (PICS) poses a serious threat to the health of intensive care unit (ICU) survivors, and effective treatment options are currently lacking. With increasing survival rates of ICU patients worldwide, there is a rising interest in developing methods to alleviate PICS symptoms. This study aimed to explore the potential of using Hyaluronan (HA) with different molecular weights as potential drugs for treating PICS in mice. Cecal ligation and puncture (CLP) were used to establish a PICS mice model, and high molecular weight HA (HMW-HA) or oligo-HA were used as therapeutic agents. Pathological and physiological changes of PICS mice in each group were monitored. 16S rRNA sequencing was performed to dissect gut microbiota discrepancies. The results showed that both molecular weights of HA could increase the survival rate of PICS mice at the experimental endpoint. Specifically, 1600 kDa-HA can alleviate PICS in a short time. In contrast, 3 kDa-HA treatment decreased PICS model survivability in the early stages of the experiment. Further, via 16S rRNA sequence analysis, we observed the changes in the gut microbiota in PICS mice, thereby impairing intestinal structure and increasing inflammation. Additionally, both types of HA can reverse this change. Moreover, compared to 1600 kDa-HA, 3 kDa-HA can significantly elevate the proportion of probiotics and reduce the abundance of pathogenic bacteria (Desulfovibrionaceae and Enterobacteriaceae). In conclusion, HA holds the advantage of being a potential therapeutic drug for PICS, but different molecular weights can lead to varying effects. Moreover, 1600 kDa-HA showed promise as a protective agent in PICS mice, and caution should be taken to its timing when considering using 3 kDa-HA.
Collapse
Affiliation(s)
- Lu Li
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yuanyuan Jiang
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Qianqian Zhu
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Dawei Liu
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Mingkai Chang
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Yongzhe Wang
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Ruitong Xi
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Wenfei Wang
- Biopharmaceutical Lab., College of Life Science, Northeast Agricultural University, Harbin 150030, China
| |
Collapse
|
6
|
Bozin T, Berdyshev I, Chukhontseva K, Karaseva M, Konarev P, Varizhuk A, Lesovoy D, Arseniev A, Kostrov S, Bocharov E, Demidyuk I. NMR structure of emfourin, a novel protein metalloprotease inhibitor: insights into the mechanism of action. J Biol Chem 2023; 299:104585. [PMID: 36889586 PMCID: PMC10124921 DOI: 10.1016/j.jbc.2023.104585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Emfourin (M4in) is a protein metalloprotease inhibitor recently discovered in the bacterium Serratia proteamaculans and the prototype of a new family of protein protease inhibitors with an unknown mechanism of action. Protealysin-like proteases (PLPs) of the thermolysin family are natural targets of emfourin-like inhibitors (ELIs) widespread in bacteria and known in archaea. The available data indicate the involvement of PLPs in interbacterial interaction as well as bacterial interaction with other organisms and likely in pathogenesis. Arguably, ELIs participate in the regulation of bacterial pathogenesis by controlling PLP activity. Here, we determined the 3D structure of M4in using solution NMR spectroscopy. The obtained structure demonstrated no significant similarity to known protein structures. This structure was used to model the M4in-enzyme complex, and the complex model was verified by small-angle X-ray scattering. Based on our analysis of the model, we propose a molecular mechanism for the inhibitor, which was confirmed by site-directed mutagenesis. We show that two spatially close flexible loop regions are critical for the inhibitor-protease interaction. One region includes aspartic acid forming a coordination bond with catalytic Zn2+ of the enzyme, and the second region carries hydrophobic amino acids interacting with protease substrate binding sites. Such an active site structure corresponds to the noncanonical inhibition mechanism. This is the first demonstration of such a mechanism for protein inhibitors of thermolysin family metalloproteases, which puts forward M4in as a new basis for the development of antibacterial agents relying on selective inhibition of prominent factors of bacterial pathogenesis belonging to this family.
Collapse
Affiliation(s)
- TimurN Bozin
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute," Moscow, Russia; National Research Centre "Kurchatov Institute," Moscow, Russia; Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - IgorM Berdyshev
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute," Moscow, Russia
| | - KseniaN Chukhontseva
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute," Moscow, Russia
| | - MariaA Karaseva
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute," Moscow, Russia
| | - PetrV Konarev
- Shubnikov Institute of Crystallography of the Federal Scientific Research Centre "Crystallography and Photonics," Russian Academy of Sciences, Moscow, Russia
| | - AnnaM Varizhuk
- Moscow Institute of Physics and Technology (State University), Dolgoprudny, Russia
| | - DmitryM Lesovoy
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - AlexanderS Arseniev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - SergeyV Kostrov
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute," Moscow, Russia
| | - EduardV Bocharov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia; Moscow Institute of Physics and Technology (State University), Dolgoprudny, Russia
| | - IlyaV Demidyuk
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute," Moscow, Russia.
| |
Collapse
|
7
|
Berdyshev IM, Karaseva MA, Demidyuk AIV. Assay for Protealysin-like Protease Inhibitor Activity. Bio Protoc 2022; 12:e4528. [PMID: 36313197 PMCID: PMC9548520 DOI: 10.21769/bioprotoc.4528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/04/2022] [Accepted: 09/05/2022] [Indexed: 12/29/2022] Open
Abstract
Here, we present the first quantitative method for the activity analysis of protealysin-like protease (PLP) inhibitors. This approach is based on a previously developed method for protealysin activity determination by hydrolysis of internally quenched fluorescent peptide substrate 2-aminobenzoyl-L-arginyl-L-seryl-L-valyl-L-isoleucyl-L-(ε-2,4-dinitrophenyl)lysine. In this protocol, we significantly reduced enzyme concentration and introduced some minor modifications to decrease variation between replicates. The protocol was validated using emfourin, a novel proteinaceous metalloprotease inhibitor. Data obtained demonstrates that the developed assay method is an affordable approach for characterizing and screening various PLP inhibitors. Graphical abstract.
Collapse
Affiliation(s)
- Igor M. Berdyshev
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute,” Moscow, Russia
| | - Maria A. Karaseva
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute,” Moscow, Russia
| | - And Ilya V. Demidyuk
- Institute of Molecular Genetics of National Research Centre “Kurchatov Institute,” Moscow, Russia
,
*For correspondence:
| |
Collapse
|
8
|
Giliazeva AG, Misheeva PS, Sharipova MR, Mardanova AM. Bioinformatic Analysis of a Grimelysin-like Protease in the Klebsiella oxytoca Strain NK-1. BIONANOSCIENCE 2022. [DOI: 10.1007/s12668-021-00924-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
9
|
Boas do Prado GV, Mendes ET, Martins RCR, Perdigão-Neto LV, Freire MP, Marchi AP, Côrtes MF, Lima VACDC, Rossi F, Guimarães T, Levin AS, Costa SF. Phenotypic and genotypic characteristics of a Carbapenem-resistant Serratia marcescens cohort and outbreak: describing an opportunistic pathogen. Int J Antimicrob Agents 2021; 59:106463. [PMID: 34715332 DOI: 10.1016/j.ijantimicag.2021.106463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/29/2021] [Accepted: 10/16/2021] [Indexed: 11/05/2022]
Abstract
Serratia marcescens is an emerging opportunistic pathogen with high genetic diversity. We described microbiological characteristics of isolates and also risk factors for infections caused by carbapenem-resistant S. marcescens(CrSm). A retrospective study of patients colonized(N=43) and infected(N=20) by CrSm over a three-year period was conducted. Polymerase chain reaction(PCR) for carbapenemases genes and molecular typing of all available strains was performed; Forty-two isolates were analyzed, including three environmental samples identified during an outbreak. Thirty-five CrSm carried blaKPC-2; one isolate was blaNDM-positive and four isolates carried blaOXA-101. The genomes were grouped into three clusters with 100% bootstrap; three patterns of mutations on ompC and ompF were found. The strains carried virulence genes related to invasion and hemolysis and the environmental strains presented less mutations on the virulence genes than clinical strains. The multivariate analysis showed that previous use of polymyxin(p=0.008) was an independent risk factor for infection by CrSm. Our study highlighted that blaKPC-2 in association with ompC, ompF mutation was the most frequent mechanism of resistance in our hospital, and that previous use of polymyxin was an independent risk factor for CrSm. There is a predominant clone, including the environmental isolates, suggesting that cross-transmission was involved in the dissemination of this pathogen.
Collapse
Affiliation(s)
- Gladys Villas Boas do Prado
- Medical Research Laboratory, Bacteriology -LIM-49, USP Medical School, Universidade de São Paulo, São Paulo, Brazil
| | - Elisa Teixeira Mendes
- Pontifical Catholic University of Campinas (Puc-Campinas) Center of Life Science, Postgraduate program in Health Science, Infectious Diseases.
| | | | - Lauro Vieira Perdigão-Neto
- Medical Research Laboratory, Bacteriology -LIM-49, USP Medical School, Universidade de São Paulo, São Paulo, Brazil
| | - Maristela Pinheiro Freire
- Infection Control Committee of Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Ana Paula Marchi
- Medical Research Laboratory, Bacteriology -LIM-49, USP Medical School, Universidade de São Paulo, São Paulo, Brazil
| | - Marina Farrel Côrtes
- Medical Research Laboratory, Bacteriology -LIM-49, USP Medical School, Universidade de São Paulo, São Paulo, Brazil
| | | | - Flavia Rossi
- Department of Pathology, Division of Microbiology of the Central Laboratory (LIM 03), Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Thais Guimarães
- Infection Control Committee of Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Anna Sara Levin
- Medical Research Laboratory, Bacteriology -LIM-49, USP Medical School, Universidade de São Paulo, São Paulo, Brazil; Department of Infectious and Parasitic Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Silvia Figueiredo Costa
- Medical Research Laboratory, Bacteriology -LIM-49, USP Medical School, Universidade de São Paulo, São Paulo, Brazil; Department of Infectious and Parasitic Diseases, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| |
Collapse
|
10
|
Bozin TN, Chukhontseva KN, Lesovoy DM, Filatov VV, Kozlovskiy VI, Demidyuk IV, Bocharov EV. NMR assignments and secondary structure distribution of emfourin, a novel proteinaceous protease inhibitor. BIOMOLECULAR NMR ASSIGNMENTS 2021; 15:10.1007/s12104-021-10030-x. [PMID: 34091855 DOI: 10.1007/s12104-021-10030-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/01/2021] [Indexed: 06/12/2023]
Abstract
Emfourin (M4in) from Serratia proteamaculans is a new proteinaceous inhibitor of protealysin-like proteases (PLPs), a subgroup of the well-known and widely represented metallopeptidase M4 family. Although the biological role of PLPs is debatable, data published indicate their involvement in pathogenesis, including bacterial invasion into eukaryotic cells, suppression of immune defense of some animals, and destruction of plant cell walls. Gene colocalization into a bicistronic operon observed for some PLPs and their inhibitors (as in the case of M4in) implies a mutually consistent functioning of both entities. The originality of the amino acid sequence of M4in suggests it belongs to a previously unknown protein family and this encourages structural studies. In this work, we report a near-complete assignment of 1H, 13C, and 15N resonances of recombinant M4in and its structural-dynamic properties derived from the chemical shifts. According the NMR data analysis, the M4in molecule comprises 3-5 helical elements and 4-6 β-strands, at least two of which are apparently antiparallel, ascribing this obviously globular protein to the α + β structural class. Besides, two disordered regions also exist in the central loops between the regular secondary structural elements. The obtained data provide the basis for determining the high-resolution structure as well as functioning mechanism of M4in that can be used for development of new antibacterial therapeutic strategies.
Collapse
Affiliation(s)
- Timur N Bozin
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", 2, Kurchatov Sq, 123182, Moscow, Russia
- National Research Centre "Kurchatov Institute", Moscow, Russia
| | - Ksenia N Chukhontseva
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", 2, Kurchatov Sq, 123182, Moscow, Russia
| | - Dmitry M Lesovoy
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| | - Vasily V Filatov
- Chernogolovka Branch of the Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - Viacheslav I Kozlovskiy
- Chernogolovka Branch of the Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Chernogolovka, Russia
| | - Ilya V Demidyuk
- Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", 2, Kurchatov Sq, 123182, Moscow, Russia.
| | - Eduard V Bocharov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
11
|
The protealysin operon encodes emfourin, a prototype of a novel family of protein metalloprotease inhibitors. Int J Biol Macromol 2020; 169:583-596. [PMID: 33385454 DOI: 10.1016/j.ijbiomac.2020.12.170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 01/02/2023]
Abstract
Protealysin is a Serratia proteamaculans metalloproteinase of the M4 peptidase family and the prototype of a large group of protealysin-like proteases (PLPs). PLPs are likely involved in bacterial interaction with plants and animals as well as in bacterial pathogenesis. We demonstrated that the PLP genes in bacteria colocalize with the genes of putative conserved proteins. In S. proteamaculans, these two genes form a bicistronic operon. The putative S. proteamaculans protein that we called emfourin (M4in) was expressed in Escherichia coli and characterized. M4in forms a complex with protealysin with a 1:1 stoichiometry and is a potent slow-binding competitive inhibitor of protealysin (Ki = 52 ± 14 pM); besides, M4in is not secreted from S. proteamaculans constitutively. A comparison of amino acid sequences of M4in and its homologs with those of known inhibitors suggests that M4in is the prototype of a new family of protein inhibitors of proteases.
Collapse
|
12
|
Abstract
Microbial virulence factors encompass a wide range of molecules produced by pathogenic microorganisms, enhancing their ability to evade their host defenses and cause disease [...].
Collapse
Affiliation(s)
- Jorge H Leitão
- IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Department of Bioengineering, Universidade de Lisboa. Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| |
Collapse
|