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Yu X, Ma C, Wang W, Ge J, Wang Z, Lin J, Che Q, Zhang G, Zhu T, Li D. Genome Mining Reveals a UbiA-Type Prenyltransferase Access to Farnesylation of Diketopiperazines. Org Lett 2024; 26:3349-3354. [PMID: 38607994 DOI: 10.1021/acs.orglett.4c00714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
UbiA-type prenyltransferases (PTases) are significant enzymes that lead to structurally diverse meroterpenoids. Herein, we report the identification and characterization of an undescribed UbiA-type PTase, FtaB, that is responsible for the farnesylation of indole-containing diketopiperazines (DKPs) through genome mining. Heterologous expression of the fta gene cluster and non-native pathways result in the production of a series of new C2-farnesylated DKPs. This study broadens the reaction scope of UbiA-type PTases and expands the chemical diversity of meroterpenoids.
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Affiliation(s)
- Xiaotian Yu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Chuanteng Ma
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Wenxue Wang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Jing Ge
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Zian Wang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Jiaqi Lin
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Qian Che
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Guojian Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, People's Republic of China
| | - Tianjiao Zhu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, People's Republic of China
| | - Dehai Li
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Laoshan Laboratory, Qingdao 266237, People's Republic of China
- Sanya Oceanographic Institute, Ocean University of China, Sanya 572025, People's Republic of China
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2
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Narasimman V, Ramachandran S. Purification, structural characterization, and neuroprotective effect of 3,6-diisobutyl-2,5-piperazinedione from Halomonas pacifica CARE-V15 against okadaic acid-induced neurotoxicity in zebrafish model. J Biochem Mol Toxicol 2024; 38:e23708. [PMID: 38597299 DOI: 10.1002/jbt.23708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/26/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Halomonas pacifica CARE-V15 was isolated from the southeastern coast of India to determine its genome sequence. Secondary metabolite gene clusters were identified using an anti-SMASH server. The concentrated crude ethyl acetate extract was evaluated by GC-MS. The bioactive compound from the crude ethyl acetate extract was fractionated by gel column chromatography. HPLC was used to purify the 3,6-diisobutyl-2,5-piperazinedione (DIP), and the structure was determined using FTIR and NMR spectroscopy. Purified DIP was used in an in silico molecular docking analysis. Purified DIP exhibits a stronger affinity for antioxidant genes like glutathione peroxidase (GPx), glutathione-S-transferase (GST), and glutathione reductase (GSR). Using in silco molecular docking analysis, the protein-ligand binding affinities of GSR (-4.70 kcal/mol), GST (-5.27 kcal/mol), and GPx (-5.37 kcal/mol) were measured. The expression of antioxidant genes were investigated by qRT-PCR. The in vivo reactive oxygen species production, lipid peroxidation, and cell death levels were significantly (p ≤ 0.05) increased in OA-induced group, but all these levels were significantly (p ≤ 0.05) decreased in the purified DIP pretreated group. Purified DIP from halophilic bacteria could thus be a useful treatment for neurological disorders associated with oxidative stress.
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Affiliation(s)
- Vignesh Narasimman
- Native Medicine and Marine Pharmacology Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (Deemed to be University), Chettinad Health City, Kelambakkam, Tamil Nadu, India
| | - Saravanan Ramachandran
- Native Medicine and Marine Pharmacology Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (Deemed to be University), Chettinad Health City, Kelambakkam, Tamil Nadu, India
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3
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Huang Y, Li J, Chen S, Liu W, Wu M, Zhu D, Xie Y. [Advances in the biosynthesis of cyclodipeptide type natural products derived from actinomycetes]. Sheng Wu Gong Cheng Xue Bao 2023; 39:4497-4516. [PMID: 38013180 DOI: 10.13345/j.cjb.230068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Cyclodipeptide (CDP) composed of two amino acids is the simplest cyclic peptide. These two amino acids form a typical diketopiperazine (DKP) ring by linking each other with peptide bonds. This characteristic stable ring skeleton is the foundation of CDP to display extensive and excellent bioactivities, which is beneficial for CDPs' pharmaceutical research and development. The natural CDP products are well isolated from actinomycetes. These bacteria can synthesize DKP backbones with nonribosomal peptide synthetase (NRPS) or cyclodipeptide synthase (CDPS). Moreover, actinomycetes could produce a variety of CDPs through different enzymatic modification. The presence of these abundant and diversified catalysis indicates that actinomycetes are promising microbial resource for exploring CDPs. This review summarized the pathways for DKP backbones biosynthesis and their post-modification mechanism in actinomycetes. The aim of this review was to accelerate the genome mining of CDPs and their isolation, purification and structure identification, and to facilitate revealing the biosynthesis mechanism of novel CDPs as well as their synthetic biology design.
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Affiliation(s)
- Yunhong Huang
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Jinzu Li
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Simin Chen
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Wenhui Liu
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Miaoer Wu
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Du Zhu
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, Jiangxi, China
| | - Yunchang Xie
- Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province, College of Life Sciences, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, Jiangxi, China
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4
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Stierle SA, Harken L, Li SM. Production of Diketopiperazine Derivatives by Pathway Engineering with Different Cyclodipeptide Synthases from Various Streptomyces Strains. ACS Synth Biol 2023; 12:1804-1812. [PMID: 37183364 DOI: 10.1021/acssynbio.3c00115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Cyclodipeptides from fungi and bacteria are often modified by different tailoring enzymes. They display various biological and pharmacological activities, and some derivatives are used as drugs. In a previous study, we elucidated the function of the silent guatrypmethine gene cluster from Streptomyces cinnamoneus containing a cyclodipeptide synthase (CDPS) core gene gtmA and four genes gtmB-gtmE for tailoring enzymes. The latter are used in this study for the design of modified cyclodipeptides by genetic engineering. Addition of six different cyclodipeptides to the Streptomyces albus transformant harboring gtmB-gtmE led to the detection of different pathway products. Coexpression of five CDPS genes from four Streptomyces strains with gtmB-gtmE resulted in the formation of diketopiperazine derivatives, differing in their modification stages. Our results demonstrate the potential of rational gene combination to increase structural diversity.
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Affiliation(s)
- Sina A Stierle
- Institut für Pharmazeutische Biologie und Biotechnologie, Fachbereich Pharmazie, Philipps-Universität Marburg, 35037 Marburg, Germany
| | - Lauritz Harken
- Institut für Pharmazeutische Biologie und Biotechnologie, Fachbereich Pharmazie, Philipps-Universität Marburg, 35037 Marburg, Germany
| | - Shu-Ming Li
- Institut für Pharmazeutische Biologie und Biotechnologie, Fachbereich Pharmazie, Philipps-Universität Marburg, 35037 Marburg, Germany
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5
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Hareeri RH, Aldurdunji MM, Abdallah HM, Alqarni AA, Mohamed SGA, Mohamed GA, Ibrahim SRM. Aspergillus ochraceus: Metabolites, Bioactivities, Biosynthesis, and Biotechnological Potential. Molecules 2022; 27:molecules27196759. [PMID: 36235292 PMCID: PMC9572620 DOI: 10.3390/molecules27196759] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/27/2022] [Accepted: 10/08/2022] [Indexed: 11/24/2022]
Abstract
Fungus continues to attract great attention as a promising pool of biometabolites. Aspergillus ochraceus Wilh (Aspergillaceae) has established its capacity to biosynthesize a myriad of metabolites belonging to different chemical classes, such as isocoumarins, pyrazines, sterols, indole alkaloids, diketopiperazines, polyketides, peptides, quinones, polyketides, and sesquiterpenoids, revealing various bioactivities that are antimicrobial, cytotoxic, antiviral, anti-inflammatory, insecticidal, and neuroprotective. Additionally, A. ochraceus produces a variety of enzymes that could have variable industrial and biotechnological applications. From 1965 until June 2022, 165 metabolites were reported from A. ochraceus isolated from different sources. In this review, the formerly separated metabolites from A. ochraceus, including their bioactivities and biosynthesis, in addition, the industrial and biotechnological potential of A. ochraceus are highlighted.
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Affiliation(s)
- Rawan H. Hareeri
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammed M. Aldurdunji
- Department of Clinical Pharmacy, College of Pharmacy, Umm Al-Qura University, P.O. Box 13578, Makkah 21955, Saudi Arabia
| | - Hossam M. Abdallah
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Ali A. Alqarni
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Pharmaceutical Care Department, Ministry of National Guard—Health Affairs, Jeddah 22384, Saudi Arabia
| | | | - Gamal A. Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sabrin R. M. Ibrahim
- Department of Chemistry, Preparatory Year Program, Batterjee Medical College, Jeddah 21442, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
- Correspondence: ; Tel.: +966-581183034
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Yin L, Chen X, Chen Q, Wei D, Hu XY, Jia AQ. Diketopiperazine Modulates Arabidopsis thaliana Root System Architecture by Promoting Interactions of Auxin Receptor TIR1 and IAA7/17 Proteins. Plant Cell Physiol 2022; 63:57-69. [PMID: 34534338 DOI: 10.1093/pcp/pcab142] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 08/25/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
Plants can detect the quorum sensing (QS) signaling molecules of microorganisms, such as amino acids, fat derivatives and diketopiperazines (DKPs), thus allowing the exchange information to promote plant growth and development. Here, we evaluated the effects of 12 synthesized DKPs on Arabidopsis thaliana roots and studied their underlying mechanisms of action. Results showed that, as QS signal molecules, the DKPs promoted lateral root development and root hair formation in A.thaliana to differing degrees. The DKPs enhanced the polar transport of the plant hormone auxin from the shoot to root and triggered the auxin-responsive protein IAA7/17 to decrease the auxin response factor, leading to the accumulation of auxin at the root tip and accelerated root growth. In addition, the DKPs induced the development of lateral roots and root hair in the A. thaliana root system architecture via interference with auxin receptor transporter inhibitor response protein 1 (TIR1). A series of TIR1 sites that potentially interact with DKPs were also predicted using molecular docking analysis. Mutations of these sites inhibited the phosphorylation of TIR1 after DKP treatment, thereby inhibiting lateral root formation, especially TIR1-1 site. This study identified several DKP signal molecules in the QS system that can promote the expression of auxin response factors ARF7/19 via interactions of TIR1 and IAA7/17 proteins, thus promoting plant growth and development.
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Affiliation(s)
- Lujun Yin
- School of Life and Pharmaceutical Sciences, Key Laboratory of Tropical Biological Resources of Ministry Education, Hainan University, Haikou 571157, China
| | - Xiaodong Chen
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200000, China
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210000, China
| | - Qi Chen
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200000, China
| | - Dongqing Wei
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200000, China
| | - Xiang-Yang Hu
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200000, China
| | - Ai-Qun Jia
- School of Life and Pharmaceutical Sciences, Key Laboratory of Tropical Biological Resources of Ministry Education, Hainan University, Haikou 571157, China
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210000, China
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7
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Ding Y, Zhu X, Hao L, Zhao M, Hua Q, An F. Bioactive Indolyl Diketopiperazines from the Marine Derived Endophytic Aspergillus versicolor DY180635. Mar Drugs 2020; 18:E338. [PMID: 32605149 PMCID: PMC7401283 DOI: 10.3390/md18070338] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 01/25/2023] Open
Abstract
Four new indolyl diketopiperazines, aspamides A-E (1-4) and two new diketopiperazines, aspamides F-G (5-6), along with 11 known diketopiperazines and intermediates were isolated from the solid culture of Aspergillus versicolor, which is an endophyte with the sea crab (Chiromantes haematocheir). Further chiral high-performance liquid chromatography resolution gave enantiomers (+)- and (-)-4, respectively. The structures and absolute configurations of compounds 1-6 were determined by the comprehensive analyses of nuclear magnetic resonance (NMR), high-resolution mass spectrometry (HR-MS), and electronic circular dichroism (ECD) calculation. All isolated compounds were selected for the virtual screening on the coronavirus 3-chymoretpsin-like protease (Mpro) of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), and the docking scores of compounds 1-2, 5, 6, 8 and 17 were top among all screened molecules, may be helpful in fighting with Corona Virus Disease-19 (COVID-19) after further studies.
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Affiliation(s)
| | | | | | | | | | - Faliang An
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, China; (Y.D.); (X.Z.); (L.H.); (M.Z.); (Q.H.)
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8
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Wang ZF, Sun ZC, Xiao L, Zhou YM, Du FY. Herbicidal Polyketides and Diketopiperazine Derivatives from Penicillium viridicatum. J Agric Food Chem 2019; 67:14102-14109. [PMID: 31790231 DOI: 10.1021/acs.jafc.9b06116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Herbicidal activity-guided isolation from the fermentation extract of Penicillium viridicatum had obtained two herbicidal series of polyketides (1-7) and diketopiperazine derivatives (8-11), especially including three novel polyketides (1-3). The structures and absolute configurations of new polyketides 1-3 were elucidated by extensive spectroscopic analyses, as well as comparisons between measured and calculated ECD spectra. Novel polyketides 1-3 and known 4, all bearing the heptaketide skeleton with a trans-fused decalin ring of 8-CH3 substitution, could significantly inhibit the radicle growth of Echinochloa crusgalli seedlings with a dose-dependent relationship. Especially at the concentration of 10 μg/mL, 1-4 exhibited the inhibition rates with 81.5% ± 2.0, 76.4% ± 0.8, 79.6% ± 1.1, and 80.0 ± 1.8%, respectively, even better than the commonly used synthetic herbicide of acetochlor with 76.1 ± 1.4%. Further greenhouse bioassay revealed that 4 showed pre-emergence herbicidal activity against E. crusgalli with the fresh-weight inhibition rate of 74.1% at a dosage of 400 g ai/ha, also better than acetochlor, while the other isolated metabolites (5-11) exhibited moderate herbicidal activities. The structure-activity differences of isolated polyketides indicated that the heptaketide skeleton, characterized by a trans-fused decalin ring with 8-CH3 substitution, should be the key factor of their herbicidal activities, which could give new insights for the bioherbicide developments.
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Gao S, Liu H, de Crécy-Lagard V, Zhu W, Richards NGJ, Naismith JH. PMP-diketopiperazine adducts form at the active site of a PLP dependent enzyme involved in formycin biosynthesis. Chem Commun (Camb) 2019; 55:14502-14505. [PMID: 31730149 PMCID: PMC6927412 DOI: 10.1039/c9cc06975e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 10/16/2019] [Indexed: 01/04/2023]
Abstract
ForI is a PLP-dependent enzyme from the biosynthetic pathway of the C-nucleoside antibiotic formycin. Cycloserine is thought to inhibit PLP-dependent enzymes by irreversibly forming a PMP-isoxazole. We now report that ForI forms novel PMP-diketopiperazine derivatives following incubation with both d and l cycloserine. This unexpected result suggests chemical diversity in the chemistry of cycloserine inhibition.
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Affiliation(s)
- Sisi Gao
- Research Complex at Harwell
,
Didcot
, OX11 0FA
, UK
- BSRC
, University of St Andrews
,
St Andrews
, KY16 9ST
, UK
| | - Huanting Liu
- BSRC
, University of St Andrews
,
St Andrews
, KY16 9ST
, UK
| | | | - Wen Zhu
- Department of Chemistry and California
, Institute for Quantitative Biosciences
, University of California
,
Berkeley
, CA 94720
, USA
| | - Nigel G. J. Richards
- School of Chemistry
, Cardiff University
, Park Place
,
Cardiff
, CF10 3AT
, UK
- Foundation for Applied Molecular Evolution
,
Alachua
, FL 32415
, USA
| | - James H. Naismith
- Division of Structural Biology
, University of Oxford
,
Oxford
, OX3 7BN
, UK
.
- The Rosalind Franklin Institute
,
Didcot
, OX11 0FA
, UK
- State Key Laboratory of Biotherapy
, University of Sichuan
,
China
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Zhu J, Zhang Y, Deng J, Jiang H, Zhuang L, Ye W, Ma J, Jiang J, Feng L. Diketopiperazines Synthesis Gene in Shewanella baltica and Roles of Diketopiperazines and Resveratrol in Quorum Sensing. J Agric Food Chem 2019; 67:12013-12025. [PMID: 31589428 DOI: 10.1021/acs.jafc.9b04620] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The synthesis pathways of quorum sensing (QS) signal molecules and the mechanism of action of quorum sensing inhibitors (QSIs) have gained considerable attention as research topics in the field of food preservation. Here, Shewanella baltica was detected as the specific spoilage organism in large yellow croaker during 4 °C storage, and it produced the QS signal molecules autoinducer-2 (AI-2) and diketopiperazines (DKPs). Then, a cyclodipeptide synthase (CDPS) homologous gene, sb1370, was screened, and knockout and rescue results revealed that this gene was involved in DKP synthesis but not in AI-2 synthesis, and it also played an important role in QS. Furthermore, fish fillets and mutant strains were treated with resveratrol, and the results suggested that resveratrol was an ideal QSI for inhibition of DKPs production via the sb1370 gene and reduced QS in S. baltica, thus delaying the process of fish spoilage during chilling storage.
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Affiliation(s)
- Junli Zhu
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Yuwei Zhang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Jingmin Deng
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Hanyun Jiang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Liumin Zhuang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Wei Ye
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Jiayu Ma
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Jingyang Jiang
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
| | - Lifang Feng
- College of Food Science and Biotechnology , Zhejiang Gongshang University , Hangzhou 310018 , PR China
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He W, Xu Y, Fu P, Zuo M, Liu W, Jiang Y, Wang L, Zhu W. Cytotoxic Indolyl Diketopiperazines from the Aspergillus sp. GZWMJZ-258, Endophytic with the Medicinal and Edible Plant Garcinia multiflora. J Agric Food Chem 2019; 67:10660-10666. [PMID: 31479263 DOI: 10.1021/acs.jafc.9b04254] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Two new indolyl diketopiperazines, gartryprostatins A and B (1 and 2), with an unusual 2,3-furan-fused pyrano[2,3-g]pyrrolo[1″,2″:4',5']pyrazino[1',2':1,5]pyrrolo[2,3-b]indole nucleus, along with a new naturally occurring compound (gartryprostatin C, 3) were isolated from the solid culture of Aspergillus sp. GZWMJZ-258, an endophyte from Garcinia multiflora (Guttiferae). The structures of compounds 1-3 were determined by nuclear magnetic resonance, mass spectrometry, Marfey's analysis of amino acids, and chemical calculation. Compounds 1-3 displayed selective inhibition on human FLT3-ITD mutant AML cell line, MV4-11, with IC50 values of 7.2, 10.0, and 0.22 μM, respectively.
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Affiliation(s)
- Wenwen He
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province , Chinese Academy of Sciences , Guiyang , Guizhou 550014 , China
- School of Pharmaceutical Sciences , Guizhou Medical University , Guiyang , Guizhou 550025 , China
| | - Yanchao Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province , Chinese Academy of Sciences , Guiyang , Guizhou 550014 , China
- School of Pharmaceutical Sciences , Guizhou Medical University , Guiyang , Guizhou 550025 , China
| | - Peng Fu
- Laboratory for Marine Drugs and Bioproducts , Pilot National Laboratory for Marine Science and Technology (Qingdao) , Qingdao , Shandong 266003 , China
| | - Mingxing Zuo
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province , Chinese Academy of Sciences , Guiyang , Guizhou 550014 , China
- School of Pharmaceutical Sciences , Guizhou Medical University , Guiyang , Guizhou 550025 , China
| | - Wen Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province , Chinese Academy of Sciences , Guiyang , Guizhou 550014 , China
| | - Yangming Jiang
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province , Chinese Academy of Sciences , Guiyang , Guizhou 550014 , China
| | - Liping Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Key Laboratory of Chemistry for Natural Products of Guizhou Province , Chinese Academy of Sciences , Guiyang , Guizhou 550014 , China
- School of Pharmaceutical Sciences , Guizhou Medical University , Guiyang , Guizhou 550025 , China
| | - Weiming Zhu
- State Key Laboratory of Functions and Applications of Medicinal Plants , Guizhou Medical University , Guiyang , Guizhou 550014 , China
- Laboratory for Marine Drugs and Bioproducts , Pilot National Laboratory for Marine Science and Technology (Qingdao) , Qingdao , Shandong 266003 , China
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12
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Jiang G, Zhang Y, Powell MM, Hylton SM, Hiller NW, Loria R, Ding Y. A Promiscuous Cytochrome P450 Hydroxylates Aliphatic and Aromatic C-H Bonds of Aromatic 2,5-Diketopiperazines. Chembiochem 2019; 20:1068-1077. [PMID: 30604585 PMCID: PMC8162728 DOI: 10.1002/cbic.201800736] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Indexed: 11/06/2022]
Abstract
Cytochrome P450 enzymes generally functionalize inert C-H bonds, and thus, they are important biocatalysts for chemical synthesis. However, enzymes that catalyze both aliphatic and aromatic hydroxylation in the same biotransformation process have rarely been reported. A recent biochemical study demonstrated the P450 TxtC for the biosynthesis of herbicidal thaxtomins as the first example of this unique type of enzyme. Herein, the detailed characterization of substrate requirements and biocatalytic applications of TxtC are reported. The results reveal the importance of N-methylation of the thaxtomin diketopiperazine (DKP) core on enzyme reactions and demonstrate the tolerance of the enzyme to modifications on the indole and phenyl moieties of its substrates. Furthermore, hydroxylated, methylated, aromatic DKPs are synthesized through a biocatalytic route comprising TxtC and the promiscuous N-methyltransferase Amir_4628; thus providing a basis for the broad application of this unique P450.
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Affiliation(s)
- Guangde Jiang
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development, University of Florida, Gainesville, FL, 32610, USA
| | - Yi Zhang
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development, University of Florida, Gainesville, FL, 32610, USA
| | - Magan M Powell
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development, University of Florida, Gainesville, FL, 32610, USA
| | - Sarah M Hylton
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development, University of Florida, Gainesville, FL, 32610, USA
| | - Nicholas W Hiller
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development, University of Florida, Gainesville, FL, 32610, USA
| | - Rosemary Loria
- Department of Plant Pathology, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, 32611, USA
| | - Yousong Ding
- Department of Medicinal Chemistry, Center for Natural Products, Drug Discovery and Development, University of Florida, Gainesville, FL, 32610, USA
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13
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Abstract
Indole diketopiperazine alkaloids are secondary metabolites of microorganisms that are widely distributed in filamentous fungi, especially in the genera Aspergillus and Penicillium of the phylum Ascomycota or sac fungi. These alkaloids represent a group of natural products characterized by diversity in both chemical structures and biological activities. This review aims to summarize 166 indole diketopiperazine alkaloids from fungi published from 1944 to mid-2015. The emphasis is on diverse chemical structures within these alkaloids and their relevant biological activities. The aim is to assess which of these compounds merit further study for purposes of drug development.
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Affiliation(s)
- Yang-Min Ma
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology , Xi'an 710021, Shaanxi, China
| | - Xi-Ai Liang
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology , Xi'an 710021, Shaanxi, China
| | - Yang Kong
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology , Xi'an 710021, Shaanxi, China
| | - Bin Jia
- Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology , Xi'an 710021, Shaanxi, China
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14
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Fatima N, Ismail T, Muhammad SA, Jadoon M, Ahmed S, Azhar S, Mumtaz A. EPICOCCUM SP., AN EMERGING SOURCE OF UNIQUE BIOACTIVE METABOLITES. Acta Pol Pharm 2016; 73:13-21. [PMID: 27008796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Fungi are playing a vital role for producing natural products, most productive source of lead compounds in far reaching endeavor of new drug discovery. Epicoccum fungus is known for its potential to produce diverse classes of biologically active secondary metabolites. The intent of this review is to provide detailed information about biology and chemistry of Epicoccum fungus. Most of the fungus metabolites showed cytotoxic, anticancer, antimicrobial and anti-diabetic activities. The literature given encompases the details of isolation of different unusual and unique secondary metabolites, their chemical nature and biological activities find out Epicoccum spp., a potential source of lead molecules.
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15
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Guo X, Liu X, Pan J, Yang H. Synergistic algicidal effect and mechanism of two diketopiperazines produced by Chryseobacterium sp. strain GLY-1106 on the harmful bloom-forming Microcystis aeruginosa. Sci Rep 2015; 5:14720. [PMID: 26423356 PMCID: PMC4589682 DOI: 10.1038/srep14720] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 09/02/2015] [Indexed: 11/08/2022] Open
Abstract
A potent algicidal bacterium isolated from Lake Taihu, Chryseobacterium sp. strain GLY-1106, produces two algicidal compounds: 1106-A (cyclo(4-OH-Pro-Leu)) and 1106-B (cyclo(Pro-Leu)). Both diketopiperazines showed strong algicidal activities against Microcystis aeruginosa, the dominant bloom-forming cyanobacterium in Lake Taihu. Interestingly, these two algicidal compounds functioned synergistically. Compared with individual treatment, combined treatment with cyclo(4-OH-Pro-Leu) and cyclo(Pro-Leu) significantly enhanced algicidal activity, accelerated the increase in intracellular reactive oxygen species (ROS) levels in M. aeruginosa, and further decreased the activities of antioxidases, effective quantum yield and maximal electron transport rate of M. aeruginosa. The results also showed that the algicidal characteristics of cyclo(4-OH-Pro-Leu) are distinct from those of cyclo(Pro-Leu). Cyclo(4-OH-Pro-Leu) mainly interrupted the flux of electron transport in the cyanobacterial photosynthetic system, whereas cyclo(Pro-Leu) mainly inhibited the activity of cyanobacterial intracellular antioxidases. A possible algicidal mechanism for the synergism between cyclo(4-OH-Pro-Leu) and cyclo(Pro-Leu) is proposed, which is in accordance with their distinct algicidal characteristics in individual and combined treatment. These findings suggest that synergism between algicidal compounds might be used as an effective strategy for the future control of Microcystis blooms.
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Affiliation(s)
- Xingliang Guo
- State Key Laboratory of Microbial metabolism, and School of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Xianglong Liu
- State Key Laboratory of Microbial metabolism, and School of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Jianliang Pan
- State Key Laboratory of Microbial metabolism, and School of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
| | - Hong Yang
- State Key Laboratory of Microbial metabolism, and School of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China
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16
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Kaur A, Raja HA, Darveaux BA, Chen WL, Swanson SM, Pearce CJ, Oberlies NH. New diketopiperazine dimer from a filamentous fungal isolate of Aspergillus sydowii. Magn Reson Chem 2015; 53:616-9. [PMID: 26040447 PMCID: PMC4692248 DOI: 10.1002/mrc.4254] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/31/2015] [Accepted: 04/06/2015] [Indexed: 05/23/2023]
Affiliation(s)
- Amninder Kaur
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, P.O. Box 26170, Greensboro, North Carolina 27402, United States
| | - Huzefa A. Raja
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, P.O. Box 26170, Greensboro, North Carolina 27402, United States
| | - Blaise A. Darveaux
- Mycosynthetix, Inc., 505 Meadowlands Drive, Suite 103, Hillsborough, North Carolina 27278, United States
| | - Wei-Lun Chen
- Department of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Steven M. Swanson
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin - Madison, Madison, WI, 53705, United States
| | - Cedric J. Pearce
- Mycosynthetix, Inc., 505 Meadowlands Drive, Suite 103, Hillsborough, North Carolina 27278, United States
| | - Nicholas H. Oberlies
- Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, P.O. Box 26170, Greensboro, North Carolina 27402, United States
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17
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Brack C, Mikolasch A, Schlueter R, Otto A, Becher D, Wegner U, Albrecht D, Riedel K, Schauer F. Antibacterial metabolites and bacteriolytic enzymes produced by Bacillus pumilus during bacteriolysis of Arthrobacter citreus. Mar Biotechnol (NY) 2015; 17:290-304. [PMID: 25678259 DOI: 10.1007/s10126-015-9614-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 12/24/2014] [Indexed: 06/04/2023]
Abstract
The marine isolate Bacillus pumilus SBUG 1800 is able to lyse living cells of Arthrobacter citreus on solid media as well as pasteurized A. citreus cells in liquid mineral salt medium. The cultivation of B. pumilus in the presence of pasteurized A. citreus is accompanied by an enhanced production of 2,5-diketopiperazines (DKPs). DKPs inhibit bacterial growth, but do not seem to cause bacteriolysis. This study shows that B. pumilus also lyses living cells of A. citreus in co-culture experiments as an intraguild predator, even if the inoculum of B. pumilus is low. In order to characterize the bacteriolytic process, more precisely changes in the extracellular metabolome and proteome have been analyzed under different culture conditions. Besides the known DKPs, a number of different pumilacidins and bacteriolytic enzymes are produced. Two lipopeptides with [M + H](+) = 1008 and [M + H](+) = 1022 were detected and are proposed to be pumilacidin H and I. While the lipopeptides lyse living bacterial cells in lysis test assays, a set of extracellular enzymes degrades the dead cell material. Two of the cell wall hydrolases involved have been identified as N-acetylmuramoyl-L-alanine amidase and beta-N-acetylglucosaminidase. These findings together with electron microscopic and cell growth monitoring during co-culture experiments give a detailed view on the bacteriolytic process.
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Affiliation(s)
- Christiane Brack
- Institute of Microbiology, Ernst-Moritz-Arndt-University of Greifswald, Friedrich-Ludwig Jahn-Str. 15, 17487, Greifswald, Germany,
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18
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Saruwatari T, Yagishita F, Mino T, Noguchi H, Hotta K, Watanabe K. Cytochrome P450 as dimerization catalyst in diketopiperazine alkaloid biosynthesis. Chembiochem 2014; 15:656-9. [PMID: 24677498 DOI: 10.1002/cbic.201300751] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Indexed: 11/10/2022]
Abstract
As dimeric natural products frequently exhibit useful biological activities, identifying and understanding their mechanisms of dimerization is of great interest. One such compound is (−)-ditryptophenaline, isolated from Aspergillus flavus, which inhibits substance P receptor for potential analgesic and anti-inflammatory activity. Through targeted gene knockout in A. flavus and heterologous yeast gene expression, we determined for the first time the gene cluster and pathway for the biosynthesis of a dimeric diketopiperazine alkaloid. We also determined that a single cytochrome P450, DtpC, is responsible not only for pyrroloindole ring formation but also for concurrent dimerization of N-methylphenylalanyltryptophanyl diketopiperazine monomers into a homodimeric product. Furthermore, DtpC exhibits relaxed substrate specificity, allowing the formation of two new dimeric compounds from a non-native monomeric precursor, brevianamide F. A radical-mediated mechanism of dimerization is proposed.
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19
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Giessen TW, Marahiel MA. The tRNA-dependent biosynthesis of modified cyclic dipeptides. Int J Mol Sci 2014; 15:14610-31. [PMID: 25196600 PMCID: PMC4159871 DOI: 10.3390/ijms150814610] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 08/01/2014] [Accepted: 08/18/2014] [Indexed: 01/28/2023] Open
Abstract
In recent years it has become apparent that aminoacyl-tRNAs are not only crucial components involved in protein biosynthesis, but are also used as substrates and amino acid donors in a variety of other important cellular processes, ranging from bacterial cell wall biosynthesis and lipid modification to protein turnover and secondary metabolite assembly. In this review, we focus on tRNA-dependent biosynthetic pathways that generate modified cyclic dipeptides (CDPs). The essential peptide bond-forming catalysts responsible for the initial generation of a CDP-scaffold are referred to as cyclodipeptide synthases (CDPSs) and use loaded tRNAs as their substrates. After initially discussing the phylogenetic distribution and organization of CDPS gene clusters, we will focus on structural and catalytic properties of CDPSs before turning to two recently characterized CDPS-dependent pathways that assemble modified CDPs. Finally, possible applications of CDPSs in the rational design of structural diversity using combinatorial biosynthesis will be discussed before concluding with a short outlook.
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Affiliation(s)
- Tobias W Giessen
- Department of Chemistry/Biochemistry and LOEWE Center for Synthetic Microbiology (SYNMIKRO), Philipps-University Marburg, Hans-Meerwein-Strasse-4, 35032 Marburg, Germany.
| | - Mohamed A Marahiel
- Department of Chemistry/Biochemistry and LOEWE Center for Synthetic Microbiology (SYNMIKRO), Philipps-University Marburg, Hans-Meerwein-Strasse-4, 35032 Marburg, Germany.
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20
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Brack C, Mikolasch A, Schauer F. 2,5-Diketopiperazines produced by Bacillus pumilus during bacteriolysis of Arthrobacter citreus. Mar Biotechnol (NY) 2014; 16:385-395. [PMID: 24449388 DOI: 10.1007/s10126-014-9559-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 10/10/2013] [Indexed: 05/28/2023]
Abstract
We report the detection by gas chromatography/mass spectrometry and liquid chromatography/mass spectrometry analyses of the secreted 2,5-diketopiperazines (DKPs) cyclo(-Ala-Pro), cyclo(-Gly-Pro), cyclo(-Val-Pro), cyclo(-Ile-Pro), cyclo(-Leu-Pro), cyclo(-Pro-Pro), cyclo(-HyP-Pro), cyclo(-Met-Pro), and cyclo(-Phe-Pro) produced by Bacillus pumilus. The study focuses on a marine isolate and a laboratory test strain of B. pumilus with capabilities to lyse pregrown living cell lawns of different bacterial species, among them Arthrobacter citreus. Chromatographic methods were used to analyze induced bioactive compounds. At least 13 different DKPs are produced by B. pumilus. Both strains respond with an increased production of the DKPs cyclo(-Gly-Pro), cyclo(-Ala-Pro), and cyclo(-Val-Pro) to the presence of pasteurized A. citreus cells after 4 h in a nutrient-poor liquid medium. In agar diffusion assays, these DKPs did not cause lysis zones in living cell lawns, but they did inhibit further growth of several pregrown test bacteria in microplates even at concentrations as low as 1 μg ml(-1). Antibiotic substances produced by B. pumilus after 20 h of cultivation in a special lysis medium showed lytic activity in cell-free extracts of B. pumilus culture supernatants.
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Affiliation(s)
- Christiane Brack
- Department of Applied Microbiology, Institute of Microbiology, University Greifswald, Friedrich-Ludwig-Jahn-Str. 15, 17487, Greifswald, Germany,
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21
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Wei W, Jiang N, Mei YN, Chu YL, Ge HM, Song YC, Ng SW, Tan RX. An antibacterial metabolite from Lasiodiplodia pseudotheobromae F2. Phytochemistry 2014; 100:103-109. [PMID: 24529576 DOI: 10.1016/j.phytochem.2014.01.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 07/17/2013] [Accepted: 01/13/2014] [Indexed: 06/03/2023]
Abstract
In searching for symbionts derived from bioactive natural products, six sulfureous diketopiperazines designated as lasiodiplines A-F (1-6) were characterized from the culture of Lasiodiplodia pseudotheobromae F2, previously residing in the apparently normal flower of Illigera rhodantha (Hernandiaceae). Identification of structures was accomplished by a combination of spectroscopic and computational approaches, in conjunction with the low-temperature (100K) single-crystal X-ray diffraction with Cu Kα radiation. Lasiodipline E (5) was demonstrated to be antibacterial against the clinical strains Streptococcus sp., Bacteroides vulgates, Peptostreptococcus sp. and Veillonella parvula, respectively, with an minimum inhibitory concentration (MIC) range of 0.12-0.25 μg/mL. In addition, compounds 4 and 6 exemplify two unusual architectures of natural cyclodipeptides, signifying the unique biochemical characteristics of the producing fungus.
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Affiliation(s)
- Wei Wei
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
| | - Nan Jiang
- School of Pharmacy, Nanjing Medical University, Nanjing 210029, PR China
| | - Ya Ning Mei
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Yan Liang Chu
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
| | - Hui Ming Ge
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
| | - Yong Chun Song
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China
| | - Seik Weng Ng
- Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Ren Xiang Tan
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, PR China.
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22
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Gu Q, Fu L, Wang Y, Lin J. Identification and characterization of extracellular cyclic dipeptides as quorum-sensing signal molecules from Shewanella baltica, the specific spoilage organism of Pseudosciaena crocea during 4 °C storage. J Agric Food Chem 2013; 61:11645-11652. [PMID: 24206027 DOI: 10.1021/jf403918x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Quorum-sensing (QS) signaling molecules are able to mediate specific gene expression inside spoilage bacteria in response to population density and thus are implicated in food spoilage. In the present work, a total of 102 strains of spoilage bacteria were isolated from Pseudosciaena crocea at 4 °C storage, and of these, 60 strains were identified as Shewanella spp., and 48 strains (47.1%) were identified as S. baltica. In addition, the spoilage capabilities of three different S. baltica strains (00A, 00B, and 00C) were compared by total volatile base nitrogen (TVB-N) and sensory analysis (off-odors). Furthermore, four cyclic dipeptides (diketopiperazines, DKPs) that function as QS signal molecules were isolated and characterized from the extracellular metabolites of S. baltica 00C which had the strongest spoilage activity based on gas chromatography mass spectrometry (GC-MS). By supplementation of four synthesized DKPs, the spoilage capability of S. baltica could be significantly enhanced. So far, this was the first attempt to characterize DKPs as the signaling molecules in QS of S. baltica. Our study may provide some evidence of the role of DKPs involved in microbial spoilage.
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Affiliation(s)
- Qingqing Gu
- Marine Resources and Nutrition Biology Research Center, Food Quality & Safety Department, Zhejiang Gongshang University , Hangzhou 310035, China
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23
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Bar-Or D, Slone DS, Mains CW, Rael LT. Dipeptidyl peptidase IV activity in commercial solutions of human serum albumin. Anal Biochem 2013; 441:13-7. [PMID: 23770236 DOI: 10.1016/j.ab.2013.06.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 05/14/2013] [Accepted: 06/06/2013] [Indexed: 11/15/2022]
Abstract
Due to the heterogeneous nature of commercial human serum albumin (cHSA), other components, such as the protease dipeptidyl peptidase IV (DPP-IV), possibly contribute to the therapeutic effect of cHSA. Here, we provide evidence for the first time that DPP-IV activity contributes to the formation of aspartate-alanine diketopiperazine (DA-DKP), a known immunomodulatory molecule from the N terminus of human albumin. cHSA was assayed for DPP-IV activity using a specific DPP-IV substrate and inhibitor. DPP-IV activity was assayed at 37 and 60°C because cHSA solutions are pasteurized at 60°C. DPP-IV activity in cHSA was compared with other sources of albumin such as a recombinant albumin (rHSA). In addition, the production of DA-DKP was measured by negative electrospray ionization/liquid chromatography mass spectrometry (ESI(-)/LCMS). Significant levels of DPP-IV activity were present in cHSA. This activity was abolished using a specific DPP-IV inhibitor. Fully 70 to 80% DPP-IV activity remained at 60°C compared with the 37°C incubate. No DPP-IV activity was present in rHSA, suggesting that DPP-IV activity is present only in HSA produced using the Cohn fractionation process. The formation of DA-DKP at 60°C was observed with the DPP-IV inhibitor significantly decreasing this formation. DPP-IV activity in cHSA results in the production of DA-DKP, which could account for some of the clinical effects of cHSA.
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Affiliation(s)
- David Bar-Or
- Trauma Research Laboratory, Swedish Medical Center, Englewood, CO 80113, USA.
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24
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Kozlovskiĭ AG, Zhelifonova VP, Antipova TV. [Fungi of the genus Penicillium as producers of physiologically active compounds (review)]. ACTA ACUST UNITED AC 2013; 49:5-16. [PMID: 23662444 DOI: 10.7868/s0555109913010091] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fungi of the genus Penicillium isolated from little studied habitats are able to synthesize both previously known and new physiologically active compounds with diverse structures. They include secondary metabolites of alkaloid nature, i.e., ergot alkaloids, diketopiperazines, quinolines, quinazolines, benzodiazepines, and polyketides. We discuss the use of profiles of secondary metabolites for taxonomy purposes. Studying the physicochemical characteristics of producers of biologically active compounds showed that the biosynthesis of alkaloids is initiated on the first days of cultivation and proceeds simultaneously with growth. The cyclic character of alkaloid accumulation was recorded related to the processes of alkaloid biosynthesis, excretion from cells, degradation in culture fluid, and consumption by cells. Synchronic variations in the concentrations of intracellular tryptophan and alkaloids are necessary for the regulation of the optimal quantity of tryptophan necessary for the culture.
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25
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Nishanth Kumar S, Mohandas C, Nambisan B. Purification of an antifungal compound, cyclo(l-Pro-d-Leu) for cereals produced by Bacillus cereus subsp. thuringiensis associated with entomopathogenic nematode. Microbiol Res 2013; 168:278-88. [PMID: 23305769 DOI: 10.1016/j.micres.2012.12.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 12/15/2012] [Indexed: 11/15/2022]
Abstract
Mold spoilage is the main cause of substantial economic loss in cereals and might also cause public health problems due to the production of mycotoxins. The aim of this study was to separate and purify and to identify antifungal compounds of bacterium associated with novel entomopathogenic nematode and check the antifungal property of identified compound in particular food model systems. The antifungal compound was purified using silica gel column chromatography, TLC and HPLC and its structure was elucidated using NMR (¹H NMR, ¹³C NMR, ¹H-¹H COSY, ¹H-¹³C HMBC), HRMS and Marfey's method. Based on the spectral data, the active compounds were identified as diketopiperazine [cyclo(l-Pro-d-Leu)]. The antifungal activity of cyclo(l-Pro-d-Leu) was studied by MIC and paper disk assay against Aspergillus flavus MTCC 277 and Aspergillus niger MTCC 282 and best MIC value of 8μg/ml was recorded against A. flavus. Cyclo(l-Pro-d-Leu) strongly inhibit mycelia growth of fungus and thereby affecting aflatoxin production. To investigate the potential application of the cyclo(l-Pro-d-Leu) and to eliminate fungal spoilage in food and feed, soybean and peanut were used as models. White mycelia and dark/pale green spores of A. flavus were observed in the control soybeans after 2-day incubation. However the fungal growth was not observed in soybeans treated with cyclo(l-Pro-d-Leu). Almost the same result was observed for peanuts treated with cyclo(l-Pro-d-Leu) for A. niger. The cyclo(l-Pro-d-Leu) was nontoxic to two normal human cell lines (FS normal fibroblast and L231 lung epithelial) up to 200μg/ml. Thus the diketopiperazine derivative identified in the study may be a promising alternative to chemical preservatives as a potential biopreservative which prevent fungal growth and mycotoxin formation in food and feed.
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Affiliation(s)
- S Nishanth Kumar
- Division of Crop Protection/Division of Crop Utilization, Central Tuber Crops Research Institute, Sreekariyam, Thiruvananthapuram 695017, India.
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26
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Abstract
Studies of chemical signaling between plants and bacteria in the past have been largely confined to two models: the rhizobial-legume symbiotic association and pathogenesis between agrobacteria and their host plants. Recent studies are beginning to provide evidence that many plant-associated bacteria undergo chemical signaling with the plant host via low-molecular-weight compounds. Plant-produced compounds interact with bacterial regulatory proteins that then affect gene expression. Similarly, bacterial quorum-sensing signals result in a range of functional responses in plants. This review attempts to highlight current knowledge in chemical signaling that takes place between pathogenic bacteria and plants. This chemical communication between plant and bacteria, also referred to as interkingdom signaling, will likely become a major research field in the future, as it allows the design of specific strategies to create plants that are resistant to plant pathogens.
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Affiliation(s)
- Vittorio Venturi
- International Center for Genetic Engineering and Biotechnology, 34149 Trieste, Italy.
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27
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Ding GZ, Liu YB, Ma SG, Yu SS. [Metabolites of Aspergillus fumigatus]. Zhongguo Zhong Yao Za Zhi 2012; 37:3083-3085. [PMID: 23311158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Aspergillus fumigatus, a type of endophytic fungi from Erthrophleum fordii, was fermented with GPY culture medium. Fermented liquid and mycelium were extracted from fermented products after freezing and thawing treatment. After alcohol extraction, mycelium was extracted with ethyl acetate and n-butyl alcohol, respectively. According to the results of cytotoxity of tumor cells, ethyl acetate extracts were studied for their chemical constituents. Five diketopiperazine compounds were separated and purified with silica gel, MCI and Sephadex LH-20 column chromatography, reversed-phase chromatographic column and preparative HPLC, their structures were identified as cyclo- (R-Pro-R-Phe) (1), cyclo- (trans-4-OH-D-Pro-D-Phe) (2), cyclo- (R-Tyr-S-Ile) (3), cyclo-(R-Phe-S-Ile) (4), and cyclo-(R-Val-S-Tyr) (5) by using spectral methods.
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Affiliation(s)
- Guang-Zhi Ding
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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Tommonaro G, Abbamondi GR, Iodice C, Tait K, De Rosa S. Diketopiperazines produced by the halophilic archaeon, Haloterrigena hispanica, activate AHL bioreporters. Microb Ecol 2012; 63:490-495. [PMID: 22109096 DOI: 10.1007/s00248-011-9980-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 11/04/2011] [Indexed: 05/31/2023]
Abstract
The generic term "quorum sensing" has been adopted to describe the bacterial cell-to-cell communication mechanism which coordinates gene expression when the population has reached a high cell density. Quorum sensing depends on the synthesis of small molecules that diffuse in and out of bacterial cells. There are few reports about this mechanism in Archaea. We report the isolation and chemical characterization of small molecules belonging to class of diketopiperazines (DKPs) in Haloterrigena hispanica, an extremely halophilic archaeon. One of the DKPs isolated, the compound cyclo-(L-prolyl-L-valine) activated N-acyl homoserine lactone (AHL) bioreporters, indicating that Archaea may have the ability to interact with AHL-producing bacteria within mixed communities.
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Affiliation(s)
- Giuseppina Tommonaro
- Institute of Biomolecular Chemistry, CNR-National Research Council of Italy, Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy.
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Antipova TV, Zhelifonova VP, Baskunov BP, Ozerskaia SM, Ivanushkina NE, Kozlovskiĭ AG. [New producers of biologically active compounds--fungal strains of the genus Penicillium isolated from permafrost]. Prikl Biokhim Mikrobiol 2011; 47:318-323. [PMID: 21790032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Screening of producers of secondary metabolites was carried out among 25 fungal strains of Penicillium genus isolated from permafrost in Arctic and Antarctic regions and Kamchatka. Nearly 50% of the investigated strains synthesize biologically active substances of alkaloid nature: ergot alkaloids, diketopiperazines, and quinoline derivatives. A large group of the identified metabolites belongs to mycotoxins. A strain of Penicillium waksmanii was found producing epoxiagroclavine-I and quinocitrinins. The main physiological and biochemical characteristics of this producer were investigated.
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Teixidó M, Zurita E, Malakoutikhah M, Tarragó T, Giralt E. Diketopiperazines as a Tool for the Study of Transport across the Blood−Brain Barrier (BBB) and Their Potential Use as BBB-Shuttles. J Am Chem Soc 2007; 129:11802-13. [PMID: 17764181 DOI: 10.1021/ja073522o] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here we prepared and evaluated two libraries of mono-N-methylated and di-N-methylated diketopiperazines (DKPs) by parallel artificial membrane permeability assay and immobilized artificial membrane chromatography in order to obtain information on the features that govern the passage of peptidic molecules across the blood-brain barrier (BBB) by passive diffusion. On the basis of the results from these two libraries, we prepared and evaluated several DKP-baicalin and DKP-dopamine constructs. The DKPs or cyclic dipeptide scaffolds can be considered a novel family of brain delivery systems (BBB-shuttles) to transport to the brain drugs and other cargos that cannot cross the BBB unaided.
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Affiliation(s)
- Meritxell Teixidó
- Institut de Recerca Biomèdica, Parc Científic de Barcelona, Josep Samitier 1-5, Barcelona, Spain
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