Thelactococcus Lactis Nisin-Sucrose Conjugative Transposon Tti5276
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University of Groningen Genomics and Bioinformatics Enhance Research on Food and Gut Bacteria
University of Groningen Genomics and bioinformatics enhance research on food and gut bacteria - Editorial overview Kuipers, OP Published in: Current Opinion in Biotechnology DOI: 10.1016/j.copbio.2004.03.003 IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 2004 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Kuipers, OP. (2004). Genomics and bioinformatics enhance research on food and gut bacteria - Editorial overview. Current Opinion in Biotechnology, 15(2), 83-85. https://doi.org/10.1016/j.copbio.2004.03.003 Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). The publication may also be distributed here under the terms of Article 25fa of the Dutch Copyright Act, indicated by the “Taverne” license. More information can be found on the University of Groningen website: https://www.rug.nl/library/open-access/self-archiving-pure/taverne- amendment. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. -
NISIN: PRODUCTION and MECHANISM of ANTIMICROBIAL ACTION IJCRR Section: Healthcare Sci
Review Article NISIN: PRODUCTION AND MECHANISM OF ANTIMICROBIAL ACTION IJCRR Section: Healthcare Sci. Journal Impact Factor Sukrita Punyauppa-path, Parichat Phumkhachorn, 4.016 Pongsak Rattanachaikunsopon Department of Biological Science, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand. ABSTRACT Nisin is a heat stable lantibiotic consisting of 34 amino acids. Of these amino acids, there are several unusual amino acids includ- ing dehydroalanine, dehydrobutyrine, aminobutyric acid, lanthionine and β-methyllanthionine. It has antimicrobial activity against many species of Gram positive bacteria, but not Gram negative bacteria due to their outer membrane barriers. However, when used in combination with other chemical or physical treatments that destabilize the outer membranes, nisin can inhibit Gram negative bacteria. Nisin has been used as a food preservative in many food industries because it is legally approved as safe for use in food and beverage. The knowledge on the production and mechanism of antimicrobial action of nisin is important for the understanding how nisin contains unusual amino acids and how it kills sensitive bacteria. The knowledge may also be a factor for the successful application of nisin. Therefore, this review focuses on presenting these two aspects of nisin. Key Words: Bacteriocin, Lactococcus lactis, lanbiotic, nisin INTRODUCTION (Table 1), but not Gram negative bacteria due to their outer membrane barrier. Normally, nisin producer has Nisin is the antimcirobial peptide produced by Lactococ- immunity to its own produced nisin but not to other lan- 1 cus lactis subsp. Lactis . It is the only bacterioicin that tibotics. This is for protecting itself from being killed by have been legally approved as safe for use in food and its own nisin. -
LOEWE Center for Synthetic Microbiology 3
SCIENTIFIC REPORT 2010–2014 LOEWE CENTER FOR SYNTHETIC MICROBIoloGY 3 Preface Research on microorganisms has been a long-stand- The collaboration between groups from the Philipps- ing focus of the Philipps-Universität and has made Universität with departments and research groups Marburg one of the best places in Germany to study from the Max Planck Institute for Terrestrial Microbi- microbiology. The fruitful collaborations between ology laid the foundation for further projects like the groups working at the university and the local Max international Max Planck Research School and DFG- Planck Institute for Terrestrial Microbiology have funded coordinated programs, including the micro- heightened the national and international visibility biology-oriented Collaborative Research Center 987. of Marburg and have fortified its reputation for excel- Regionally, SYNMIKRO interacts with groups at the lence. These concerted activities provided the appro- Justus-Liebig-Universität Giessen and the Technische priate framework for the foundation of the Center for Hochschule Mittelhessen and thereby strengthens the Synthetic Microbiology (SYNMIKRO) within the LOEWE research alliance among the universities. SYNMIKRO excellence program of the state of Hessen in a joint is thus also a prime example of fruitful collaborations effort between Philipps-Universität and Max Planck between institutions. Society in the year 2010. We are grateful for the con- tinued support of the state of Hessen without which The manifold research activities and the broad range the center could not have been established. On the oc- of microorganisms studied under the umbrella of casion of the fifth anniversary since its inception, this SYNMIKRO extend to dedicated teaching activities brochure surveys the many activities of SYNMIKRO. -
Bacteriotherapy in Breast Cancer
International Journal of Molecular Sciences Review Bacteriotherapy in Breast Cancer 1,2, 3, 4 5 Atieh Yaghoubi y, Majid Khazaei y, Seyed Mahdi Hasanian , Amir Avan , William C. Cho 6,* and Saman Soleimanpour 1,2,* 1 Antimicrobial Resistance Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad 91387-35499, Iran; [email protected] 2 Department of Microbiology and Virology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 91387-35499, Iran 3 Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad 9138735499, Iran; [email protected] 4 Department of Medical Biochemistry, Faculty of Medicine, Mashhad University of Medical, Sciences, Mashhad 91387-35499, Iran; [email protected] 5 Cancer Research Center, Mashhad University of Medical Sciences, Mashhad 91387-35499, Iran; [email protected] 6 Department of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong * Correspondence: [email protected] or [email protected] (W.C.C.); [email protected] (S.S.); Tel.: +852-3506-6284 (W.C.C.); +98-912-6590-092 (S.S.); Fax: +852-3506-5455 (W.C.C.); +98-511-8409-612 (S.S.) These authors contributed equally to this work. y Received: 2 October 2019; Accepted: 18 November 2019; Published: 23 November 2019 Abstract: Breast cancer is the second most common cause of cancer-related mortality among women around the world. Conventional treatments in the fight against breast cancer, such as chemotherapy, are being challenged regarding their effectiveness. Thus, strategies for the treatment of breast cancer need to be continuously refined to achieve a better patient outcome. -
First Evidence of Production of the Lantibiotic Nisin P Enriqueta Garcia-Gutierrez1,2, Paula M
www.nature.com/scientificreports OPEN First evidence of production of the lantibiotic nisin P Enriqueta Garcia-Gutierrez1,2, Paula M. O’Connor2,3, Gerhard Saalbach4, Calum J. Walsh2,3, James W. Hegarty2,3, Caitriona M. Guinane2,5, Melinda J. Mayer1, Arjan Narbad1* & Paul D. Cotter2,3 Nisin P is a natural nisin variant, the genetic determinants for which were previously identifed in the genomes of two Streptococcus species, albeit with no confrmed evidence of production. Here we describe Streptococcus agalactiae DPC7040, a human faecal isolate, which exhibits antimicrobial activity against a panel of gut and food isolates by virtue of producing nisin P. Nisin P was purifed, and its predicted structure was confrmed by nanoLC-MS/MS, with both the fully modifed peptide and a variant without rings B and E being identifed. Additionally, we compared its spectrum of inhibition and minimum inhibitory concentration (MIC) with that of nisin A and its antimicrobial efect in a faecal fermentation in comparison with nisin A and H. We found that its antimicrobial activity was less potent than nisin A and H, and we propose a link between this reduced activity and the peptide structure. Nisin is a small peptide with antimicrobial activity against a wide range of pathogenic bacteria. It was originally sourced from a Lactococcus lactis subsp. lactis isolated from a dairy product1 and is classifed as a class I bacteri- ocin, as it is ribosomally synthesised and post-translationally modifed2. Nisin has been studied extensively and has a wide range of applications in the food industry, biomedicine, veterinary and research felds3–6. -
Functional Interaction of Human Neutrophil Peptide-1 with the Cell Wall Precursor Lipid II
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector FEBS Letters 584 (2010) 1543–1548 journal homepage: www.FEBSLetters.org Functional interaction of human neutrophil peptide-1 with the cell wall precursor lipid II Erik de Leeuw a,*, Changqing Li a, Pengyun Zeng b, Chong Li b, Marlies Diepeveen-de Buin c, Wei-Yue Lu b, Eefjan Breukink c, Wuyuan Lu a,** a University of Maryland Baltimore School of Medicine, Institute of Human Virology and Department of Biochemistry and Molecular Biology, 725 West Lombard Street, Baltimore, MD 21201, USA b Fudan University School of Pharmacy, Shanghai, China c Utrecht University, Department of Biochemistry of Membranes, Bijvoet Center for Biomolecular Research, Padualaan 8, 3585 CH, Utrecht, The Netherlands article info abstract Article history: Defensins constitute a major class of cationic antimicrobial peptides in mammals and vertebrates, Received 11 January 2010 acting as effectors of innate immunity against infectious microorganisms. It is generally accepted Revised 1 March 2010 that defensins are bactericidal by disrupting the anionic microbial membrane. Here, we provide evi- Accepted 2 March 2010 dence that membrane activity of human a-defensins does not correlate with antibacterial killing. Available online 7 March 2010 We further show that the a-defensin human neutrophil peptide-1 (HNP1) binds to the cell wall pre- Edited by Renee Tsolis cursor lipid II and that reduction of lipid II levels in the bacterial membrane significantly reduces bacterial killing. The interaction between defensins and lipid II suggests the inhibition of cell wall synthesis as a novel antibacterial mechanism of this important class of host defense peptides. -
UC San Diego UC San Diego Electronic Theses and Dissertations
UC San Diego UC San Diego Electronic Theses and Dissertations Title Probiogenomic Analysis of Three Commonly Occuring Bifidobacterial Species Permalink https://escholarship.org/uc/item/8d67d715 Author Kim, Andrew Min Publication Date 2018 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA SAN DIEGO Probiogenomic Analysis of Three Commonly Occuring Bifidobacterial Species A Thesis submitted in partial satisfaction of the requirements for the degree Master of Science in Biology by Andrew Min Kim Committee in charge: Milton Saier, Chair Eric Allen, Co-Chair Stanley Lo 2018 © Copyright Andrew Min Kim, 2018 All rights reserved. The Thesis of Andrew Min Kim is approved, and it is acceptable in quality and form for publication on microfilm and electronically: Co-Chair Chair University of California San Diego 2018 iii TABLE OF CONTENTS Signature Page ........................................................................................................... iii Table of Contents ....................................................................................................... iv List of Tables ............................................................................................................. v Acknowledgements .................................................................................................... vi Abstract of the Thesis ................................................................................................ vii Introduction -
Antibacterial Effect of High-Purity Nisin Alone and in Combination with D-Amino Acids Or Chlorhexidine in an Endodontic-Like Biofilm Model
antibiotics Article Antibacterial Effect of High-Purity Nisin Alone and in Combination with D-Amino Acids or Chlorhexidine in an Endodontic-Like Biofilm Model Ericka T. Pinheiro 1,2,* , Lamprini Karygianni 2 , Thomas Attin 2 and Thomas Thurnheer 2 1 Department of Dentistry, School of Dentistry, University of São Paulo, São Paulo 01000-000, Brazil 2 Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, CH-8032 Zürich, Switzerland; [email protected] (L.K.); [email protected] (T.A.); [email protected] (T.T.) * Correspondence: [email protected] or [email protected]; Tel.: +41-44-634-32-56 Abstract: New strategies to eradicate endodontic biofilms are needed. Therefore, we evaluated the effect of high-purity nisin alone and in combination with D-amino acids (D-AAs) or chlorhexidine (CHX) against an “endodontic-like” biofilm model. Biofilms were grown on hydroxyapatite discs for 64 h and treated with nisin, eight D-AAs mixture, nisin + eight D-AAs, 2% CHX, and nisin + 2% CHX. After the 5 min and 24 h treatments, biofilm cells were harvested and total colony-forming units were counted. Differences between groups were tested by two-way ANOVA followed by Tukey’s multiple comparisons test (p < 0.05). Nisin and D-AAs, alone or in combination, were not effective in reducing bacteria after short or long exposure times. After 5 min, treatment with 2% CHX and nisin + 2% CHX resulted in 2 and 2.4-log cell reduction, respectively, compared with the no treatment control (p < 0.001). -
NISIN and the MARKET for COMMERICIAL BACTERIOCINS Dr
NISIN AND THE MARKET FOR COMMERICIAL BACTERIOCINS Dr. Eluned Jones Dr. Victoria Salin Dr. Gary W. Williams* TAMRC Consumer and Product Research Report No. CP-01-05 July 2005 * Jones and Salin are Associate Professors and Williams is Professor of Agricultural Economics and Director, Texas Agricultural Market Research, Department of Agricultural Economics, Texas A&M University, College Station, Texas 77843-2124. NISIN AND THE MARKET FOR COMMERICIAL BACTERIOCINS Texas Agribusiness Market Research Center (TAMRC) Consumer and Product Research Report No. CP-01-05 by Dr. Eluned Jones, Dr. Victoria Salin, and Dr. Gary W. Williams, July 2005. Abstract: This report provides a background analysis of the market for nisin and other commercially available antimicrobial food additives. The report concludes that there is a potential role for a new U.S.-based entity to compete with a nisin product that is cost-competitive or provides quality guarantees to satisfy U.S. buyers who have tight specifications for ingredient sourcing and food safety and quality oversight. Acknowledgements The research reported here was conducted under contract for the National Corn Growers Association (NCGA). Thanks are due to Richard Glass and Nathan Fields of the NCGA for their support. The conclusions reached and any views expressed, however, are those of the authors and may not represent those of NCGA or of Texas A&M University. The Texas Agribusiness Market Research Center (TAMRC) has been providing timely, unique, and professional research on a wide range of issues relating to agricultural and agribusiness markets and products of importance to Texas and the nation for thirty-five years. -
Mathematical Preliminaries Discussion of the Mathematical Analysis
Towards understanding the role of noise in biological systems: the long-term dynamics of deterministic systems perturbed by small random interventions dr. Sander Hille Mathematical Institute Leiden University, The Netherlands [email protected] Mathematisch Instituut Banach Center, Bedlewo, 21 th June 2013 Outline of lecture Mathematisch Instituut Part I: Biological / experimental background and motivation Related experimental research questions Mathematical modeling Brief discussion of applicable analysis frameworks Part II: Mathematical preliminaries Discussion of the mathematical analysis (2) Sander Hille 21 June 2013 Bedlewo Mathematisch Instituut Part I Biological-experimental background and motivation (3) Sander Hille 21 June 2013 Bedlewo Noise in biological systems Mathematisch Instituut Noise in biological systems: Main view has been Organisms, especially small sized, e.g. unicellular, must deal with the nuisance of noise i.e. preventing side effects: robustness – Intrinsic noise : originating from the ‘design’ of the biochemical cellular system, caused by small molecular numbers, thermodynamic fluctuations e.g. regulation : single (large) DNA molecule, few-to-one interaction… – Extrinsic noise : originating from the unpredictability, randomness in the environment, having effects on the organism (4) Sander Hille 21 June 2013 Bedlewo Noise in biological systems Mathematisch Instituut Noise in biological systems: New complementary view is developing Organisms may exploit noise to increase their competitivity as species i.e. intrinsic noise in the system has a function too, in specific cases. 1.) Mathematical modeling and analysis is required to get further understanding of the extent of effects caused by noise in biological systems. 2.) Understand mathematically to what extent the behaviour of deterministic models of biosystems are changed when random effects are added. -
High Throughput Method to Produce and Screen Engineered Antimicrobial Lanthipeptides 3 April 2019
High throughput method to produce and screen engineered antimicrobial lanthipeptides 3 April 2019 sequences that make up the rings," explains University of Groningen Professor of Molecular Biology Oscar Kuipers. "We know that a selection of 12 natural lantibiotics all have different combinations." Synthetic genes Kuipers and his colleagues from the ETH Zürich (Switzerland) and University of Regensburg (Germany) devised a system to create large numbers of new lantibiotics: "We synthesized DNA strands coding for the different rings and combined these genetic modules to form lantibiotic genes coding for random combinations of five rings." The gene library that they created contained around 14,000 synthetic genes. Alginate microbeads containing colonies of target cells (green) and producer cells (red). Where the producer The next step was to screen the gene products for cells indeed secrete active lantibiotics, the target cells antimicrobial potential. To do this, they modified a have disappeared. Credit: Steven Schmitt ETH Zürich technique developed for enzyme screening based on micro-alginate beads. Inside these beads—each around 70 micrometers in diameter—bacteria grow. The genes from the library were put into a producer Nature provides lots of antimicrobials. However, strain containing a red fluorescent marker. "We given the rapid increase of antimicrobial diluted these bacteria so that we would end up with resistance, there is a need for the development of one or zero cells per bead. We also added a target synthetic antibiotics. Lantibiotics are an interesting strain that could be killed by the lantibiotics; those option. Molecular biologists from the University of cells were used at a higher concentration of around Groningen and their colleagues in Switzerland and 50 per bead." The target cells carried a green Germany have now developed a pipeline to create fluorescent marker and produced a peptidase that and screen large numbers of new lantibiotic activated the precursor lantibiotics secreted by the peptides. -
University of Groningen Invitro Pore-Forming Activity of The
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by University of Groningen University of Groningen Invitro pore-forming activity of the lantibiotic nisin - role of protonmotive force and lipid- composition Garcia Garcera, Maria J.; Elferink, Marieke G. L.; Driessen, Arnold J. M.; Konings, Wil N. Published in: European Journal of Biochemistry DOI: 10.1111/j.1432-1033.1993.tb17677.x IMPORTANT NOTE: You are advised to consult the publisher's version (publisher's PDF) if you wish to cite from it. Please check the document version below. Document Version Publisher's PDF, also known as Version of record Publication date: 1993 Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Garcia Garcera, M. J., Elferink, M. G. L., Driessen, A. J. M., & Konings, W. N. (1993). Invitro pore-forming activity of the lantibiotic nisin - role of protonmotive force and lipid-composition. European Journal of Biochemistry, 212(2), 417-422. https://doi.org/10.1111/j.1432-1033.1993.tb17677.x Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons). Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal.