1
|
Hider RC, Silva AMN, Cilibrizzi A. The iron(III) coordinating properties of citrate and α-hydroxycarboxylate containing siderophores. Biometals 2024:10.1007/s10534-024-00607-z. [PMID: 38773014 DOI: 10.1007/s10534-024-00607-z] [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: 02/28/2024] [Accepted: 05/05/2024] [Indexed: 05/23/2024]
Abstract
The iron(III) binding properties of citrate and rhizoferrin, a citrate containing siderophore, are compared. Citrate forms many oligonuclear complexes, whereas rhizoferrin forms a single mononuclear complex. The α-hydroxycarboxylate functional group, which is present in both citrate, and rhizoferrin, has a high affinity and selectivity for iron(III) under most biological conditions. The nature of the toxic form of iron found in the blood of patients suffering from many haemoglobinopathies and haemochromatosis is identified as a mixture of iron(III)citrate complexes. The significance of the presence of this iron pool to patients suffering from systemic iron overload is discussed. The wide utilisation of the α-hydroxycarboxylate functional group in siderophore structures is described, as is their photo-induced decarboxylation leading to the release of iron(II) ions. The importance of this facile dissociation to algal iron uptake is discussed.
Collapse
Affiliation(s)
- Robert C Hider
- Institute of Pharmaceutical Science, King's College London, London, SE1 9NH, UK.
| | - André M N Silva
- LAQV-REQUIMTE, Departamento de Quimica E Bioquimica, Faculdade de Ciencias, Universidade Do Porto, Rua Do Campo Alegre, S/N, 4169-007, Porto, Portugal
| | - Agostino Cilibrizzi
- Institute of Pharmaceutical Science, King's College London, London, SE1 9NH, UK
| |
Collapse
|
2
|
Wang CY, Hu JQ, Wang DG, Li YZ, Wu C. Recent advances in discovery and biosynthesis of natural products from myxobacteria: an overview from 2017 to 2023. Nat Prod Rep 2024. [PMID: 38390645 DOI: 10.1039/d3np00062a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Covering: 2017.01 to 2023.11Natural products biosynthesized by myxobacteria are appealing due to their sophisticated chemical skeletons, remarkable biological activities, and intriguing biosynthetic enzymology. This review aims to systematically summarize the advances in the discovery methods, new structures, and bioactivities of myxobacterial NPs reported in the period of 2017-2023. In addition, the peculiar biosynthetic pathways of several structural families are also highlighted.
Collapse
Affiliation(s)
- Chao-Yi Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - Jia-Qi Hu
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - De-Gao Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - Yue-Zhong Li
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - Changsheng Wu
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| |
Collapse
|
3
|
Saggu SK, Nath A, Kumar S. Myxobacteria: biology and bioactive secondary metabolites. Res Microbiol 2023; 174:104079. [PMID: 37169232 DOI: 10.1016/j.resmic.2023.104079] [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: 01/19/2023] [Revised: 04/22/2023] [Accepted: 05/04/2023] [Indexed: 05/13/2023]
Abstract
Myxobacteria are Gram-negative eubacteria and they thrive in a variety of habitats including soil rich in organic matter, rotting wood, animal dung and marine environment. Myxobacteria are a promising source of new compounds associated with diverse bioactive spectrum and unique mode of action. The genome information of myxobacteria has revealed many orphan biosynthetic pathways indicating that these bacteria can be the source of several novel natural products. In this review, we highlight the biology of myxobacteria with emphasis on their habitat, life cycle, isolation methods and enlist all the bioactive secondary metabolites purified till date and their mode of action.
Collapse
Affiliation(s)
- Sandeep Kaur Saggu
- Department of Biotechnology, Kanya Maha Vidyalaya, Jalandhar, Punjab, India - 144004.
| | - Amar Nath
- University Centre of Excellence in Research, Baba Farid University of Health Sciences, Faridkot, Punjab India 151203.
| | - Shiv Kumar
- Guru Gobind Singh Medical College, Baba Farid University of Health Sciences, Faridkot, Punjab India 151203.
| |
Collapse
|
4
|
Okoth DA, Hug JJ, Garcia R, Müller R. Discovery, Biosynthesis and Biological Activity of a Succinylated Myxochelin from the Myxobacterial Strain MSr12020. Microorganisms 2022; 10:microorganisms10101959. [PMID: 36296235 PMCID: PMC9611931 DOI: 10.3390/microorganisms10101959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022] Open
Abstract
Myxobacteria feature unique biological characteristics, including their capability to glide on the surface, undergo different multicellular developmental stages and produce structurally unique natural products such as the catecholate-type siderophores myxochelins A and B. Herein, we report the isolation, structure elucidation and a proposed biosynthesis of the new congener myxochelin B-succinate from the terrestrial myxobacterial strain MSr12020, featuring a succinyl decoration at its primary amine group. Myxochelin-B-succinate exhibited antibacterial growth inhibition and moderate cytotoxic activity against selected human cancer cell lines. This unique chemical modification of myxochelin B might provide interesting insights for future microbiological studies to understand the biological function and biosynthesis of secondary metabolite succinylation.
Collapse
Affiliation(s)
- Dorothy A. Okoth
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Chemistry, School of Physical and Biological Sciences, Main campus, Maseno University, Maseno P.O. Box 333-40105, Kenya
| | - Joachim J. Hug
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
| | - Ronald Garcia
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
| | - Rolf Müller
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Correspondence:
| |
Collapse
|
5
|
Microbiological Aspects of Unique, Rare, and Unusual Fatty Acids Derived from Natural Amides and Their Pharmacological Profile. MICROBIOLOGY RESEARCH 2022. [DOI: 10.3390/microbiolres13030030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In the proposed review, the pharmacological profile of unique, rare, and unusual fatty acids derived from natural amides is considered. These amides are produced by various microorganisms, lichens, and fungi. The biological activity of some natural fatty acid amides has been determined by their isolation from natural sources, but the biological activity of fatty acids has not been practically studied. According to QSAR data, the biological activity of fatty acids is shown, which demonstrated strong antifungal, antibacterial, antiviral, antineoplastic, anti-inflammatory activities. Moreover, some fatty acids have shown rare activities such as antidiabetic, anti-infective, anti-eczematic, antimutagenic, and anti-psoriatic activities. For some fatty acids that have pronounced biological properties, 3D graphs are shown that show a graphical representation of unique activities. These data are undoubtedly of both theoretical and practical interest for chemists, pharmacologists, as well as for the pharmaceutical industry, which is engaged in the synthesis of biologically active drugs.
Collapse
|
6
|
Moradi A, Yaghoubi-Avini M, Wink J. Isolation of Nannocystis species from Iran and exploring their natural products. Arch Microbiol 2022; 204:123. [PMID: 34994917 DOI: 10.1007/s00203-021-02738-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/01/2021] [Accepted: 12/20/2021] [Indexed: 11/02/2022]
Abstract
Several different techniques were employed for the isolation of Nannocystis from various sources. A polyphasic approach was used for identification. Twelve strains of N. pusilla, N. exedens, and N. konarekensis with distinctive distribution between climates were identified. The bioactivity was examined against a panel of eight bacteria, two yeasts, and one fungus; cytotoxicity was tested on the L929 fibroblast cell line. Eleven strains mainly inhibit Gram-positive bacteria, and only one isolate was cytotoxic. The extract analyses by HPLC and LC-MS were compared to Myxobase, and eight different compounds were detected; a correlation was observed between compounds and producing species. 70% of strains had the potential to produce structurally diverse compounds. Nannochelins and althiomycin were the most abundant metabolites. The discovery of a new species of Nannocystis and the high potentiality of strains to produce secondary metabolites encourage further sampling and in-depth analysis of extracts to find new active metabolites.
Collapse
Affiliation(s)
- Azam Moradi
- Department of Microbiology and Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Evin, Tehran, Iran
| | - Mohammad Yaghoubi-Avini
- Department of Microbiology and Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Evin, Tehran, Iran.
| | - Joachim Wink
- Microbial Strain Collection, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany
| |
Collapse
|
7
|
Sagaya Jansi R, Khusro A, Agastian P, Alfarhan A, Al-Dhabi NA, Arasu MV, Rajagopal R, Barcelo D, Al-Tamimi A. Emerging paradigms of viral diseases and paramount role of natural resources as antiviral agents. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143539. [PMID: 33234268 PMCID: PMC7833357 DOI: 10.1016/j.scitotenv.2020.143539] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/14/2020] [Accepted: 10/17/2020] [Indexed: 05/04/2023]
Abstract
In the current scenario, the increasing prevalence of diverse microbial infections as well as emergence and re-emergence of viral epidemics with high morbidity and mortality rates are major public health threat. Despite the persistent production of antiviral drugs and vaccines in the global market, viruses still remain as one of the leading causes of deadly human diseases. Effective control of viral diseases, particularly Zika virus disease, Nipah virus disease, Severe acute respiratory syndrome, Coronavirus disease, Herpes simplex virus infection, Acquired immunodeficiency syndrome, and Ebola virus disease remain promising goal amidst the mutating viral strains. Current trends in the development of antiviral drugs focus solely on testing novel drugs or repurposing drugs against potential targets of the viruses. Compared to synthetic drugs, medicines from natural resources offer less side-effect to humans and are often cost-effective in the productivity approaches. This review intends not only to emphasize on the major viral disease outbreaks in the past few decades and but also explores the potentialities of natural substances as antiviral traits to combat viral pathogens. Here, we spotlighted a comprehensive overview of antiviral components present in varied natural sources, including plants, fungi, and microorganisms in order to identify potent antiviral agents for developing alternative therapy in future.
Collapse
Affiliation(s)
- R Sagaya Jansi
- Department of Bioinformatics, Stella Maris College, Chennai, India
| | - Ameer Khusro
- Department of Plant Biology and Biotechnology, Loyola College, Chennai, India
| | - Paul Agastian
- Department of Plant Biology and Biotechnology, Loyola College, Chennai, India.
| | - Ahmed Alfarhan
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia.
| | - Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Rajakrishnan Rajagopal
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Damia Barcelo
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia; Water and Soil Research Group, Department of Environmental Chemistry, IDAEA-CSIC, JORDI GIRONA 18-26, 08034 Barcelona, Spain
| | - Amal Al-Tamimi
- Ecology Department, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| |
Collapse
|
8
|
Ping Q, Lu X, Li Y, Mannina G. Effect of complexing agents on phosphorus release from chemical-enhanced phosphorus removal sludge during anaerobic fermentation. BIORESOURCE TECHNOLOGY 2020; 301:122745. [PMID: 31954968 DOI: 10.1016/j.biortech.2020.122745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/03/2020] [Accepted: 01/04/2020] [Indexed: 06/10/2023]
Abstract
Phosphorus (P) release from sludge containing phosphate precipitates (FePs or AlPs) as well as the anaerobic performance with the addition of complexing agents (citric, tartaric and EDTA) during ambient anaerobic fermentation process were investigated. Results showed that citrate addition was the most effective method to enhance P release from inorganic phosphate by chelation and promote volatile fatty acids (VFAs) production simultaneously during anaerobic fermentation. Equimolar citrate addition with chemical precipitates was the optimal dosage. Microbial analysis revealed that EDTA has the strongest inhibitory effect on microbial activity and community structure, while citrate was more effective in enhancing important acidifying microorganisms than tartrate and EDTA. Therefore, citrate addition can be regarded as an alternative and promising method to recover P and carbon source from sludge containing chemical precipitates. These important discoveries will help to enrich P recovery path from sludge produced in the chemical-enhanced P removal treatment processes.
Collapse
Affiliation(s)
- Qian Ping
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Xiao Lu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Yongmei Li
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
| | - Giorgio Mannina
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Engineering Department, Palermo University, Viale delle Scienze, ed. 8, 90128 Palermo, Italy
| |
Collapse
|
9
|
Chuljerm H, Chen YL, Srichairatanakool S, Hider RC, Cilibrizzi A. Synthesis and iron coordination properties of schizokinen and its imide derivative. Dalton Trans 2019; 48:17395-17401. [PMID: 31742278 DOI: 10.1039/c9dt02731a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The iron(iii) affinity constants for schizokinen and its imide derivative are reported for the first time. Surprisingly, schizokinen possesses a higher affinity for iron(iii) than desferrioxamine B; log KFeIII (FeL), 36.2 and 30.6, respectively. This increase in value is associated with the substitution of one hydroxamate function by an α-hydroxycarboxylate grouping. By virtue of the similarity of siderophore-iron(iii) complexes and siderophore-gallium(iii) complexes, schizokinen (which is a Gram positive siderophore) has potential for 68Ga PET-based imaging.
Collapse
Affiliation(s)
- Hataichanok Chuljerm
- Institute of Pharmaceutical Science, King's College London, London, SE1 9NH, UK.
| | | | | | | | | |
Collapse
|
10
|
Tiwari B, Sellamuthu B, Piché-Choquette S, Drogui P, Tyagi RD, Vaudreuil MA, Sauvé S, Buelna G, Dubé R. The bacterial community structure of submerged membrane bioreactor treating synthetic hospital wastewater. BIORESOURCE TECHNOLOGY 2019; 286:121362. [PMID: 31054410 DOI: 10.1016/j.biortech.2019.121362] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/16/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
The pharmaceuticals are biologically active compounds used to prevent and treat diseases. These pharmaceutical compounds were not fully metabolized by the human body and thus excreted out in the wastewater stream. Thus, the study on the treatment of synthetic hospital wastewater containing pharmaceuticals (ibuprofen, carbamazepine, estradiol and venlafaxine) was conducted to understand the variation of the bacterial community in a submerged membrane bioreactor (SMBR) at varying hydraulic retention time (HRT) of 6, 12 and 18 h. The variation in bacterial community dynamics of SMBR was studied using high throughput sequencing. The removal of pharmaceuticals was uniform at varying HRT. The removal of both ibuprofen and estradiol was accounted for 90%, whereas a lower removal of venlafaxine (<10%) and carbamazepine (>5%) in SMBR was observed. The addition of pharmaceuticals alters the bacterial community structure and result in increased abundance of bacteria (e.g., Flavobacterium, Pedobacter, and Methylibium) reported to degrade toxic pollutant.
Collapse
Affiliation(s)
| | - Balasubramanian Sellamuthu
- Département de radiologie, radio-oncologie et médecine nucléaire, Centre Hospitalier de l'Université de Montréal, H2X 0A9 Montréal, QC, Canada
| | | | - Patrick Drogui
- INRS-Eau, Terre et Environnement, G1K9A9 Quebec, QC, Canada
| | | | | | - Sébastien Sauvé
- Department of Chemistry, Université de Montréal, Montreal, QC, Canada
| | - G Buelna
- Centre de Recherche Industrielle du Québec (CRIQ), Quebec, QC, Canada
| | - R Dubé
- Centre de Recherche Industrielle du Québec (CRIQ), Quebec, QC, Canada
| |
Collapse
|
11
|
Mulwa LS, Stadler M. Antiviral Compounds from Myxobacteria. Microorganisms 2018; 6:microorganisms6030073. [PMID: 30029487 PMCID: PMC6163824 DOI: 10.3390/microorganisms6030073] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/13/2018] [Accepted: 07/17/2018] [Indexed: 02/07/2023] Open
Abstract
Viral infections including human immunodeficiency virus (HIV), cytomegalovirus (CMV), hepatitis B virus (HBV), and hepatitis C virus (HCV) pose an ongoing threat to human health due to the lack of effective therapeutic agents. The re-emergence of old viral diseases such as the recent Ebola outbreaks in West Africa represents a global public health issue. Drug resistance and toxicity to target cells are the major challenges for the current antiviral agents. Therefore, there is a need for identifying agents with novel modes of action and improved efficacy. Viral-based illnesses are further aggravated by co-infections, such as an HIV patient co-infected with HBV or HCV. The drugs used to treat or manage HIV tend to increase the pathogenesis of HBV and HCV. Hence, novel antiviral drug candidates should ideally have broad-spectrum activity and no negative drug-drug interactions. Myxobacteria are in the focus of this review since they produce numerous structurally and functionally unique bioactive compounds, which have only recently been screened for antiviral effects. This research has already led to some interesting findings, including the discovery of several candidate compounds with broad-spectrum antiviral activity. The present review looks at myxobacteria-derived antiviral secondary metabolites.
Collapse
Affiliation(s)
- Lucky S Mulwa
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infectio Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
- Department of Microbial Strain Collection (MISG), Helmholtz Centre for Infection Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany.
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infectio Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
| |
Collapse
|
12
|
Fu C, Auerbach D, Li Y, Scheid U, Luxenburger E, Garcia R, Irschik H, Müller R. Die Lösung des Rätsels um den Verlust eines Kohlenstoffatoms in der Ripostatin-Biosynthese. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chengzhang Fu
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
| | - David Auerbach
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
| | - Yanyan Li
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
- Laboratory Molecules of Communication and Adaptation o Microorganisms (MCAM, UMR 7245 CNRS-MNHN); Sorbonne Universités; Muséum National d'Histoire Naturelle; Centre National de la Recherche Scientifique, CP 54; 57 rue Cuvier 75005 Paris Frankreich
| | - Ullrich Scheid
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
- Deutsches Zentrum für Infektionsforschung; Inhoffenstraße 7 38124 Braunschweig Deutschland
| | - Eva Luxenburger
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
- Deutsches Zentrum für Infektionsforschung; Inhoffenstraße 7 38124 Braunschweig Deutschland
| | - Ronald Garcia
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
- Deutsches Zentrum für Infektionsforschung; Inhoffenstraße 7 38124 Braunschweig Deutschland
| | - Herbert Irschik
- Helmholtz-Zentrum für Infektionsforschung (HZI); Inhoffenstraße 7 38124 Braunschweig Deutschland
| | - Rolf Müller
- Helmholtz-Institut für Pharmazeutische Forschung Saarland (HIPS); Helmholtz-Zentrum für Infektionsforschung (HZI); Universität des Saarlandes; Campus Gebäude E8.1 66123 Saarbrücken Deutschland
- Deutsches Zentrum für Infektionsforschung; Inhoffenstraße 7 38124 Braunschweig Deutschland
| |
Collapse
|
13
|
Fu C, Auerbach D, Li Y, Scheid U, Luxenburger E, Garcia R, Irschik H, Müller R. Solving the Puzzle of One-Carbon Loss in Ripostatin Biosynthesis. Angew Chem Int Ed Engl 2017; 56:2192-2197. [DOI: 10.1002/anie.201609950] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Chengzhang Fu
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
| | - David Auerbach
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
| | - Yanyan Li
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
- Current address: Laboratory Molecules of Communication and Adaptation of Microorganisms (MCAM, UMR 7245 CNRS-MNHN); Sorbonne Universités; Muséum National d'Histoire Naturelle; Centre National de la Recherche Scientifique, CP 54; 57 rue Cuvier 75005 Paris France
| | - Ullrich Scheid
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
- German Centre for Infection Research (DZIF); partner site Hannover-Braunschweig; Braunschweig Germany
| | - Eva Luxenburger
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
- German Centre for Infection Research (DZIF); partner site Hannover-Braunschweig; Braunschweig Germany
| | - Ronald Garcia
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
- German Centre for Infection Research (DZIF); partner site Hannover-Braunschweig; Braunschweig Germany
| | - Herbert Irschik
- Helmholtz Centre for Infection Research (HZI); Inhoffenstrasse 7 38124 Braunschweig Germany
| | - Rolf Müller
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS); Helmholtz Centre for Infection Research (HZI); Saarland University; Campus Building E8.1 66123 Saarbrücken Germany
- German Centre for Infection Research (DZIF); partner site Hannover-Braunschweig; Braunschweig Germany
| |
Collapse
|
14
|
Dávila-Céspedes A, Hufendiek P, Crüsemann M, Schäberle TF, König GM. Marine-derived myxobacteria of the suborder Nannocystineae: An underexplored source of structurally intriguing and biologically active metabolites. Beilstein J Org Chem 2016; 12:969-984. [PMID: 27340488 PMCID: PMC4902002 DOI: 10.3762/bjoc.12.96] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/25/2016] [Indexed: 12/28/2022] Open
Abstract
Myxobacteria are famous for their ability to produce most intriguing secondary metabolites. Till recently, only terrestrial myxobacteria were in the focus of research. In this review, however, we discuss marine-derived myxobacteria, which are particularly interesting due to their relatively recent discovery and due to the fact that their very existence was called into question. The to-date-explored members of these halophilic or halotolerant myxobacteria are all grouped into the suborder Nannocystineae. Few of them were chemically investigated revealing around 11 structural types belonging to the polyketide, non-ribosomal peptide, hybrids thereof or terpenoid class of secondary metabolites. A most unusual structural type is represented by salimabromide from Enhygromyxa salina. In silico analyses were carried out on the available genome sequences of four bacterial members of the Nannocystineae, revealing the biosynthetic potential of these bacteria.
Collapse
Affiliation(s)
| | - Peter Hufendiek
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| | - Max Crüsemann
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| | - Till F Schäberle
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| | - Gabriele M König
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany
| |
Collapse
|
15
|
Fazary AE, Ju YH, Al-Shihri AS, Alfaifi MY, Alshehri MA. Biodegradable siderophores: survey on their production, chelating and complexing properties. REV INORG CHEM 2016. [DOI: 10.1515/revic-2016-0002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe academic and industrial research on the interactions of complexing agents with the environment has received more attention for more than half a century ago and has always been concerned with the applications of chelating agents in the environment. In contrast, in recent years, an increasing scholarly interest has been demonstrated in the chemical and biological degradation of chelating agents. This is reflected by the increasing number of chelating agents-related publications between 1950 and middle of 2016. Consequently, the discovery of new green biodegradable chelating agents is of great importance and has an impact in the non-biodegradable chelating agent’s replacement with their green chemistry analogs. To acquire iron, many bacteria growing aerobically, including marine species, produce siderophores, which are low-molecular-weight compounds produced to facilitate acquisition of iron. To date and to the best of our knowledge, this is a concise and complete review article of the current and previous relevant studies conducted in the field of production, purification of siderophore compounds and their metal complexes, and their roles in biology and medicine.
Collapse
|
16
|
Jansen R, Sood S, Mohr KI, Kunze B, Irschik H, Stadler M, Müller R. Nannozinones and sorazinones, unprecedented pyrazinones from myxobacteria. JOURNAL OF NATURAL PRODUCTS 2014; 77:2545-2552. [PMID: 25397992 DOI: 10.1021/np500632c] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nannozinones A (1) and B (2) were discovered as metabolites of the recently isolated Nannocystis pusilla strain MNa10913 belonging to the poorly studied myxobacterial family Nannocystaceae. In contrast, the structurally related sorazinones A (5) and B (6) were isolated from Sorangium cellulosum strain Soce895, which was known as the producer of the antibiotic thuggacin A. The extract also contained methyl indole-3-carboxylate (4). HRESIMS and (1)H, (13)C, and (15)N NMR spectroscopy revealed the structures of nannozinones A (1) and B (2) as unusual dihydropyrrolo- and pyrrolopyrazinone derivatives, while sorazinone A (5) was characterized as an aromatic diketopiperazine and sorazinone B (6) as a dibenzyl 2(1H)-pyrazinone derivative. While the dihydropyrrolo derivative nannozinone A (1) showed weak antibacterial and antifungal activity, nannozinone B (2) inhibited the growth of cell cultures with IC50 values between 2.44 and 16.9 μM. The nannochelin A iron complex (3), which was isolated besides 1 and 2, was even more active, with IC50 values between 0.05 and 1.95 μM. On the other hand, the indole 4 and sorazinones 5 and 6 did not show any significant cytotoxicity and only weak activity against the Gram-positive Nocardia sp.
Collapse
Affiliation(s)
- Rolf Jansen
- Department of Microbial Drugs, §Research Group Microbial Communication, Helmholtz Centre for Infection Research , Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | | | | | | | | | | | | |
Collapse
|
17
|
Nadmid S, Plaza A, Lauro G, Garcia R, Bifulco G, Müller R. Hyalachelins A–C, Unusual Siderophores Isolated from the Terrestrial Myxobacterium Hyalangium minutum. Org Lett 2014; 16:4130-3. [DOI: 10.1021/ol501826a] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Suvd Nadmid
- Department
of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Centre for Infection Research
(HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany
- German Center
for Infection Research (DZIF), Partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Alberto Plaza
- Department
of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Centre for Infection Research
(HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany
- German Center
for Infection Research (DZIF), Partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Gianluigi Lauro
- Dipartimento
di Farmacia, Università degli Studi di Salerno, via Giovanni
Paolo II 132, 84084, Fisciano (SA), Italy
| | - Ronald Garcia
- Department
of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Centre for Infection Research
(HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany
- German Center
for Infection Research (DZIF), Partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Giuseppe Bifulco
- Dipartimento
di Farmacia, Università degli Studi di Salerno, via Giovanni
Paolo II 132, 84084, Fisciano (SA), Italy
| | - Rolf Müller
- Department
of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Centre for Infection Research
(HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany
- German Center
for Infection Research (DZIF), Partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| |
Collapse
|
18
|
Abstract
Covering: up to the end of 2013. Myxobacteria produce a vast range of structurally diverse natural products with prominent biological activities. Here, we provide a detailed description and judge the potential of all antibiotically active myxobacterial compounds as lead structures, pointing out their particularities and, if known, their mode of action. Thus, the review provides an overview of the potential of specific compounds, suitable for future investigations and possible clinical applications.
Collapse
Affiliation(s)
- Till F Schäberle
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, 53115 Bonn, Germany.
| | | | | | | |
Collapse
|
19
|
Jansen R, Sood S, Huch V, Kunze B, Stadler M, Müller R. Pyrronazols, metabolites from the myxobacteria Nannocystis pusilla and N. exedens, are unusual chlorinated pyrone-oxazole-pyrroles. JOURNAL OF NATURAL PRODUCTS 2014; 77:320-326. [PMID: 24460410 DOI: 10.1021/np400877r] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The chlorinated pyrrole-oxazole-pyrones pyrronazol A (1), pyrronazol A2 (2), and pyrronazol B (3) were isolated from Nannocystis pusilla strain Ari7, and two chlorinated pyrrole-oxazole isomers, pyrronazols C1 (4) and C2 (5), were isolated from N. pusilla strain Na a174. HRESIMS, NMR, and X-ray crystallographic analysis was used in the structure elucidation including the absolute configuration of pyrronazol A (1). In addition to pyrronazols, 1,6-phenazine-diol (6) and its glycosyl derivative, 1-hydroxyphenazin-6-yl-α-d-arabinofuranoside (7), were isolated and identified from the culture broth of N. pusilla strain Ari7. When tested for biological activity against bacteria, fungi, and yeasts, 1 showed weak antifungal activity against Mucor hiemalis (MIC 33.3 μg/mL) but no antibacterial activity, while 6 showed weak antibacterial and antifungal activity (MIC 33.3 μg/mL) against some of the strains tested. In cell culture experiments 1 showed no significant cytotoxicity, while 6 was active against several cell lines, especially the human ovarian carcinoma cells SK-OV-3 (LD50 2.59 μM).
Collapse
Affiliation(s)
- Rolf Jansen
- Department Microbial Drugs, Helmholtz Centre for Infection Research , Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | | | | | | | | | | |
Collapse
|
20
|
Santacroce MP, Merra E, Centoducati G, Zacchino V, Casalino E. Effects of dietary yeast Saccaromyces cerevisiae on the antioxidant system in the liver of juvenile sea bass Dicentrarchus labrax. FISH PHYSIOLOGY AND BIOCHEMISTRY 2012; 38:1497-1505. [PMID: 22484599 DOI: 10.1007/s10695-012-9640-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Accepted: 03/23/2012] [Indexed: 05/31/2023]
Abstract
The main goal of this work was to determine the effect of dietary live yeast Saccharomyces cerevisiae on the oxidative status of sea bass Dicentrarchus labrax juveniles. Fishes were fed on three diets: the GM group were fed a diet containing lyophilized yeast grown on grape must, the CS group were fed a diet containing lyophilized yeast grown on cornstarch, and the control group were fed a diet without yeast. The activity of the main antioxidative enzymes, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase, glutathione S-transferase (GST), and glutathione (GSH) content, as well as lipid peroxidation, was measured in the liver of sea bass juveniles 90 days after hatching. Supplementation of the diet with S. cerevisiae significantly reduced the SOD and CAT activity, increased the GST activity, decreased the GSH content, and had no effect on lipid peroxidation. The results support the already reported radical-scavenging properties of yeast and usefulness of its employment as antiperoxidative agent in fish.
Collapse
Affiliation(s)
- Maria Pia Santacroce
- Division of Aquaculture, Department of Public Health and Animal Science, University of Bari, Str. Prov. per Casamassima km 3, 70010, Valenzano, Italy
| | | | | | | | | |
Collapse
|
21
|
Gauglitz JM, Zhou H, Butler A. A suite of citrate-derived siderophores from a marine Vibrio species isolated following the Deepwater Horizon oil spill. J Inorg Biochem 2011; 107:90-5. [PMID: 22178670 DOI: 10.1016/j.jinorgbio.2011.10.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 10/20/2011] [Accepted: 10/27/2011] [Indexed: 02/01/2023]
Abstract
Nearly all microbes require iron for growth. The low concentration of iron found in the ocean makes iron acquisition a particularly difficult task. In response to these low iron conditions, many bacteria produce low-molecular-weight iron-binding molecules called siderophores to aid in iron uptake. We report herein the isolation and structural characterization of a suite of amphiphilic siderophores called the ochrobactins-OH, which are produced by a Vibrio species isolated from the Gulf of Mexico after the 2010 Deepwater Horizon oil spill. The citrate-based ochrobactins-OH are derivatives of aerobactin, replacing the acetyl groups with fatty acid appendages ranging in size from C8 to C12, and are distinctly different from the ochrobactins in that the fatty acid appendages are hydroxylated rather than unsaturated. The discovery of the marine amphiphilic ochrobactin-OH suite of siderophores increases the geographic and phylogenetic diversity of siderophore-producing bacteria.
Collapse
Affiliation(s)
- Julia M Gauglitz
- Graduate Program in Marine Science, University of California, Santa Barbara, CA 93106, USA
| | | | | |
Collapse
|
22
|
|
23
|
|
24
|
Weissman KJ, Müller R. Myxobacterial secondary metabolites: bioactivities and modes-of-action. Nat Prod Rep 2010; 27:1276-95. [DOI: 10.1039/c001260m] [Citation(s) in RCA: 225] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
25
|
A brief tour of myxobacterial secondary metabolism. Bioorg Med Chem 2009; 17:2121-36. [DOI: 10.1016/j.bmc.2008.11.025] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Revised: 11/07/2008] [Accepted: 11/11/2008] [Indexed: 12/16/2022]
|
26
|
Ohlendorf B, Leyers S, Krick A, Kehraus S, Wiese M, König GM. Phenylnannolones A-C: Biosynthesis of New Secondary Metabolites from the MyxobacteriumNannocystis exedens. Chembiochem 2008; 9:2997-3003. [DOI: 10.1002/cbic.200800434] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
27
|
Li Y, Weissman KJ, Müller R. Myxochelin Biosynthesis: Direct Evidence for Two- and Four-Electron Reduction of a Carrier Protein-Bound Thioester. J Am Chem Soc 2008; 130:7554-5. [DOI: 10.1021/ja8025278] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanyan Li
- Pharmaceutical Biotechnology, Saarland University, P.O. Box 151150, 66041 Saarbrücken, Germany
| | - Kira J. Weissman
- Pharmaceutical Biotechnology, Saarland University, P.O. Box 151150, 66041 Saarbrücken, Germany
| | - Rolf Müller
- Pharmaceutical Biotechnology, Saarland University, P.O. Box 151150, 66041 Saarbrücken, Germany
| |
Collapse
|
28
|
|
29
|
Martin JD, Ito Y, Homann VV, Haygood MG, Butler A. Structure and membrane affinity of new amphiphilic siderophores produced by Ochrobactrum sp. SP18. J Biol Inorg Chem 2006; 11:633-41. [PMID: 16791646 DOI: 10.1007/s00775-006-0112-y] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2006] [Accepted: 04/18/2006] [Indexed: 10/24/2022]
Abstract
The coastal alpha-proteobacterium Ochrobactrum sp. SP18 produces a suite of three citrate-derived, cell-associated amphiphilic siderophores, ochrobactins A-C. The ochrobactins are composed of a citric acid backbone amide-linked to two lysine residues. Each epsilon-amine of lysine is hydroxylated and acylated forming two hydroxamic acid moieties. One of the acylated appendages of each ochrobactin is (E)-2-decenoic acid. The other acylated appendages for ochrobactins A-C are (E)-2-octenoic acid, octanoic acid and (E)-2-decenoic acid, respectively. The ferric ochrobactin complexes are photoreactive in UV light, producing an oxidized ligand with loss of 46 mass units that can still coordinate Fe(III). The relative partitioning of the apo-ochrobactins, Fe(III) ochrobactins and Fe(III) photoproducts into 1,2-dimyristoyl-sn-glycero-3-phosphocholine vesicles is presented. The ochrobactins are the first example of aerobactin-based siderophores with two fatty acid appendages produced in a suite with varying acyl appendage lengths.
Collapse
Affiliation(s)
- Jessica D Martin
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106-9510, USA
| | | | | | | | | |
Collapse
|
30
|
Abstract
Iron is essential for the growth of nearly all microorganisms yet iron is only sparingly soluble near the neutral pH, aerobic conditions in which many microorganisms grow. The pH of ocean water is even higher, thereby further lowering the concentration of dissolved ferric ion. To compound the problem of availability, the total iron concentration is surprisingly low in surface ocean water, yet nevertheless, marine microorganisms still require iron for growth. Like terrestrial bacterial, bacteria isolated from open ocean water often produce siderophores, which are low molecular weight chelating ligands that facilitate the microbial acquisition of iron. The present review summarizes the structures of siderophores produced by marine bacteria and the emerging characteristics that distinguish marine siderophores.
Collapse
Affiliation(s)
- Alison Butler
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93111-9510, USA.
| |
Collapse
|
31
|
Abstract
The myxochelins are catecholate-type siderophores produced by a number of myxobacterial strains, and their corresponding biosynthetic gene clusters have been identified in Stigmatella aurantiaca Sg a15, and Sorangium cellulosum So ce56; the latter being presented in this work. Biochemical and genetic studies described here further clarify myxochelin biosynthesis. In addition to the myxochelin A biosynthetic complex, the aminotransferase MxcL is required in order to form myxochelin B, starting from 2,3-dihydroxy benzoic acid and L-lysine. Additionally, the substrate specificity of the myxochelin A biosynthetic complex was analyzed in vitro; this led to the formation of novel myxochelin derivatives. Furthermore, MxcD was over-expressed and its function as an active isochorismic acid synthase in Escherichia coli was verified by complementation studies, as was activity in vitro. The organization of the myxochelin gene cluster of S. cellulosum So ce56 was compared to that of the Sg a15 gene cluster. The comparison revealed that although the organization of the biosynthetic genes is completely different, the biosynthesis is most probably extremely similar.
Collapse
Affiliation(s)
- Nikolaos Gaitatzis
- Universität des Saarlandes, Institut für Pharmazeutische Biotechnologie, Im Stadtwald, 66123 Saarbrücken, Germany
| | | | | |
Collapse
|
32
|
AUNG W, TANAKA Y, ZHENG Z, WATANABE Y, HASHINAGA F. A Bacterial Strain with Antibacterial and Antioxidant Activities from Tasae, a Burmese Indigenous Alcohol Starter. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2004. [DOI: 10.3136/fstr.10.346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
33
|
Abstract
New chemical structures with proven biological activity still are badly needed for a host of applications and are intensively screened for. Suitable compounds may be used as such, or in the form of their derivatives or, equally important, may serve as lead compounds for designing synthetic analogs. One way to new compounds is the exploitation of new producer organisms. During the past 15 years the myxobacteria have been shown in our laboratories to be a rich source of novel secondary metabolites, many of the compounds showing interesting and sometimes unique mechanisms of action. About 50 basic structures and nearly 300 structural variants have been elucidated, and almost all of them turned out to be new compounds. Several myxobacterial substances may have a good chance of an application.
Collapse
Affiliation(s)
- H Reichenbach
- Gesellschaft für Biotechnologische Forschung, Microbial Secondary Metabolites, Mascheroder Weg 1, D-3300 Braunschweig, Germany
| | | |
Collapse
|
34
|
Bergeron RJ, Wiegand J, McManis JS, Weimar WR, Huang G. Structure-activity relationships among desazadesferrithiocin analogues. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2003; 509:167-84. [PMID: 12572994 DOI: 10.1007/978-1-4615-0593-8_9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Desferrithiocin, a natural product iron chelator (siderophore), offers an excellent platform from which to construct orally active iron chelators which have a good therapeutic window. A systematic structure-activity study on desferrithiocin identified the structural fragments necessary for the compound's oral iron-clearing activity. There are strict requirements regarding the distance between the ligating centers; they cannot be altered without loss of efficacy. The thiazoline ring must remain intact. Benz-fusions, which were designed to improve the ligands' tissue residence time and possibly iron-clearing efficiency, are ineffective. The maintenance of an (S)-configured C-4 carbon is optimal in the design of desferrithiocin-based iron chelators. With this information in hand, alteration of the redox potential of the aromatic ring was initiated. Introduction of a hydroxy in the 4'-position of at least three different desazadesferrithiocin analogues resulted in moderate to small changes in iron clearing efficacy yet dramatic reductions in the toxicity of the compounds were observed. Although the toxicity studies of these desferrithiocin analogues are continuing, it is clear that it is possible to alter a siderophore in such a way as to ameliorate its toxicity profile while maintaining its iron-clearing properties.
Collapse
Affiliation(s)
- Raymond J Bergeron
- Department of Medicinal Chemistry, University of Florida, Gainesville, Florida 32610, USA
| | | | | | | | | |
Collapse
|
35
|
Silakowski B, Kunze B, Nordsiek G, Blöcker H, Höfle G, Müller R. The myxochelin iron transport regulon of the myxobacterium Stigmatella aurantiaca Sg a15. EUROPEAN JOURNAL OF BIOCHEMISTRY 2000; 267:6476-85. [PMID: 11029592 DOI: 10.1046/j.1432-1327.2000.01740.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The biosynthetic gene cluster of the myxochelin-type iron chelator was cloned from Stigmatella aurantiaca Sg a15 and characterized. This catecholate siderophore was only known from two other myxobacteria. The biosynthetic genes of 2,3-dihydroxybenzoic acid are located in the cluster (mxcC-mxcF). Two molecules of 2, 3-dihydroxybenzoic acid are activated and condensed with lysine in a unique way by a protein homologous to nonribosomal peptide synthetases (MxcG). Inactivation of mxcG, which encodes an adenylation domain for lysine, results in a myxochelin negative mutant unable to grow under iron-limiting conditions. Growth could be restored by adding Fe3+, myxochelin A or B to the medium. Inactivation of mxcD leads to the same phenotype. A new type of reductive release from nonribosomal peptide synthetases of the 2, 3-dihydroxybenzoic acid bis-amide of lysine from MxcG, catalyzed by a protein domain with homology to NAD(P) binding sites, is discussed. The product of a gene, encoding a protein similar to glutamate-1-semialdehyde 2,1-aminomutases (mxcL), is assumed to transaminate the aldehyde that is proposed as an intermediate. Further genes encoding proteins homologous to typical iron utilization and iron uptake polypeptides are reported.
Collapse
Affiliation(s)
- B Silakowski
- GBF-Gesellschaft für Biotechnologische Forschung mbH, Braunschweig, Germany
| | | | | | | | | | | |
Collapse
|
36
|
Affiliation(s)
- Queenie Xianghong Wang
- Center for Diagnostics and Drug Development, Department of Chemistry, University of Central Florida, Orlando, Florida 32816-2366
| | - Otto Phanstiel
- Center for Diagnostics and Drug Development, Department of Chemistry, University of Central Florida, Orlando, Florida 32816-2366
| |
Collapse
|
37
|
Sakamoto T, Li H, Kikugawa Y. A Total Synthesis of Nannochelin A. A Short Route to Optically Active Nω-Hydroxy-α-amino Acid Derivatives. J Org Chem 1996. [DOI: 10.1021/jo961458f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takeshi Sakamoto
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-02, Japan
| | - Hao Li
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-02, Japan
| | - Yasuo Kikugawa
- Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-02, Japan
| |
Collapse
|
38
|
Augustiniak H, Höfle G, Irschik H, Reichenbach H. Antibiotics from Gliding Bacteria, LXXVIII. Ripostatin A, B, and C: Isolation and Structure and Structure Elucidation of Novel Metabolites fromSorangium cellulosum. ACTA ACUST UNITED AC 1996. [DOI: 10.1002/jlac.199619961026] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
39
|
|
40
|
Abstract
Bioactive microbial metabolites are attracting increasing attention as useful agents for medicine, veterinary medicine, agriculture, and as unique biochemical tools. A review of the current trends in the discovery of new metabolites shows that the number of active compounds with non-antibiotic type of activity has increased, resulting in an expansion of the variety of bioactivity of microbial metabolites. Factors that contribute to the increased rate of discovery include: development of new methods for activity measurement, exploitation of novel groups of microorganisms as sources of active compounds, new directions for chemical modification, and incorporation of newer knowledge of biotechnology into screening systems. To exemplify this, typical screening methods, and chemical and biological properties of several bioactive compounds obtained by these methods are discussed.
Collapse
Affiliation(s)
- S Omura
- Research Center for Biological Function, Kitasato Institute, Tokyo, Japan
| |
Collapse
|