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Guo S, Sang Y, Zheng C, Xue XS, Tang Z, Liu W. Enzymatic α-Ketothioester Decarbonylation Occurs in the Assembly Line of Barbamide for Skeleton Editing. J Am Chem Soc 2023; 145:5017-5028. [PMID: 36821526 DOI: 10.1021/jacs.2c10277] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The decarbonylation reaction has been developed significantly in organic chemistry as an effective approach to various synthetic applications, but enzymatic precedents for this reaction are rare. Based on investigations into the hybrid nonribosomal peptide synthetase (NRPS)-polyketide synthase (PKS) assembly line of barbamide, we report an on-line α-ketothioester decarbonylation reaction that leads to one-carbon truncation of the elongating skeleton. This enzymatic editing reaction occurs in the first round of lipopeptide extension and modification involving the multienzymes BarE and BarF, which successively house an NRPS module to initiate the biosynthesis and a PKS module to catalyze the first round of chain extension. Starting with processing a leucine-derived α-ketoacyl starter, the ketosynthase domain in BarE displays an unusual dual activity that results in net one-carbon chain elongation. It extrudes carbon monoxide from α-keto-isocaproyl thioester and then mediates decarboxylative condenses of the resultant isovaleryl thioester with malonyl thioester to form a diketide intermediate, followed by BarF-based O-methylation to stabilize the enol form of the β-carbonyl and afford an unusual E-double bond. Biochemical characterization, chemical synthesis, computational analysis, and the experimental outcome of site-directed mutagenesis illustrate the extraordinary catalytic capability of this ketosynthase domain. This work furthers the appreciation of assembly line chemistry and opens the door to new approaches for skeleton editing/engineering of related molecules using synthetic biology approaches.
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Affiliation(s)
- Shengjie Guo
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yueqian Sang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Xiao-Song Xue
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhijun Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wen Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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Lacalle-Bergeron L, Portolés T, Sales C, Carmen Corell M, Domínguez F, Beltrán J, Vicente Sancho J, Hernández F. Gas chromatography-mass spectrometry based untargeted volatolomics for smoked seafood classification. Food Res Int 2020; 137:109698. [DOI: 10.1016/j.foodres.2020.109698] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 08/06/2020] [Accepted: 09/06/2020] [Indexed: 12/20/2022]
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Zhang W, Yang F, Xu J, Gu C, Zhou K. Sensitive Carbon Monoxide Gas Sensor Based on Chemiluminescence on Nano-Au/Nd 2O 3-Ca 3Nd 2O 6: Working Condition Optimization by Response Surface Methodology. ACS OMEGA 2020; 5:20034-20041. [PMID: 32832757 PMCID: PMC7439266 DOI: 10.1021/acsomega.0c01481] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 06/04/2020] [Indexed: 06/11/2023]
Abstract
An Au/Nd2O3-Ca3Nd2O6 composite was synthesized by the sol-gel and impregnation method. The EDS spectrum and the transmission electron microscopy image showed that Au atoms are uniformly distributed on the surface of Nd2O3-Ca3Nd2O6 with a size of less than 50 nm. A sensitive carbon monoxide gas sensor based on chemiluminescence at a temperature lower than 200 °C was reported. There is a good linear relationship between the chemiluminescence intensity and the concentration of carbon monoxide in the range of 0.6-125 mg/m3. The detection limit (3σ) is 0.2 mg/m3. The working conditions optimized by the response surface methodology were an analytical wavelength of 620.90 nm, a reaction temperature of 131.63 °C, and a carrier-gas velocity of 105.46 mL/min. The sensitivity of the method can be increased by 4.5% under the optimized working conditions, which is especially important for the determination of trace substances. The carbon monoxide sensor demonstrated in this paper can be used for practical applications. The optimization method is universal for many multiparameter processes.
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Affiliation(s)
- Wenjuan Zhang
- Biochemical
Engineering College, Beijing Union University, Beijing 100023, China
- Beijing
Key Laboratory of Biomass Waste Resource Utilization, Beijing Union University, Beijing 100023, China
| | - Fuxiu Yang
- Biochemical
Engineering College, Beijing Union University, Beijing 100023, China
- Beijing
Key Laboratory of Biomass Waste Resource Utilization, Beijing Union University, Beijing 100023, China
| | - Jichao Xu
- Biochemical
Engineering College, Beijing Union University, Beijing 100023, China
- Qingdao
Institute for Food and Drug Control, Qingdao 266071, China
| | - Chunxiu Gu
- Biochemical
Engineering College, Beijing Union University, Beijing 100023, China
- Beijing
Key Laboratory of Biomass Waste Resource Utilization, Beijing Union University, Beijing 100023, China
| | - Kaowen Zhou
- Biochemical
Engineering College, Beijing Union University, Beijing 100023, China
- Beijing
Key Laboratory of Biomass Waste Resource Utilization, Beijing Union University, Beijing 100023, China
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Oliverio S, Varlet V. Total Blood Carbon Monoxide: Alternative to Carboxyhemoglobin as Biological Marker for Carbon Monoxide Poisoning Determination. J Anal Toxicol 2018; 43:79-87. [DOI: 10.1093/jat/bky084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/24/2018] [Indexed: 02/07/2023] Open
Affiliation(s)
- S Oliverio
- Forensic Toxicology and Chemistry Unit, University Centre of Legal Medicine Lausanne-Geneva, Chemin de la Vulliette 4, Lausanne, Switzerland
- Department of Environmental Sciences, College of Health and Life Sciences, Brunel University London, Kingston Lane, Uxbridge, Middlesex, UK
| | - V Varlet
- Forensic Toxicology and Chemistry Unit, University Centre of Legal Medicine Lausanne-Geneva, Chemin de la Vulliette 4, Lausanne, Switzerland
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Djenane D, Roncalés P. Carbon Monoxide in Meat and Fish Packaging: Advantages and Limits. Foods 2018; 7:foods7020012. [PMID: 29360803 PMCID: PMC5848116 DOI: 10.3390/foods7020012] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 12/29/2017] [Accepted: 01/15/2018] [Indexed: 01/17/2023] Open
Abstract
Due to increased demands for greater expectation in relation to quality, convenience, safety and extended shelf-life, combined with growing demand from retailers for cost-effective extensions of fresh muscle foods’ shelf-life, the food packaging industry quickly developed to meet these expectations. During the last few decades, modified atmosphere packaging (MAP) of foods has been a promising area of research, but much remains to be known regarding the use of unconventional gases such carbon monoxide (CO). The use of CO for meat and seafood packaging is not allowed in most countries due to the potential toxic effect, and its use is controversial in some countries. The commercial application of CO in food packaging was not then considered feasible because of possible environmental hazards for workers. CO has previously been reported to mask muscle foods’ spoilage, and this was the primary concern raised for the prohibition, as this may mislead consumers. This review was undertaken to present the most comprehensive and current overview of the widely-available, scattered information about the use of CO in the preservation of muscle foods. The advantages of CO and its industrial limits are presented and discussed. The most recent literature on the consumer safety issues related to the use of CO and consumer acceptance of CO especially in meat packaging systems were also discussed. Recommendations and future prospects were addressed for food industries, consumers and regulators on what would be a “best practice” in the use of CO in food packaging. All this promotes high ethical standards in commercial communications by means of effective regulation, for the benefit of consumers and businesses in the world, and this implies that industrialized countries and members of their regulatory agencies must develop a coherent and robust systems of regulation and control that can respond effectively to new challenges.
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Affiliation(s)
- Djamel Djenane
- Laboratory of Food Quality and Food Safety, Department of Food Science and Technology, University Mouloud Mammeri, P.O. Box 17, Tizi-Ouzou 15000, Algeria.
| | - Pedro Roncalés
- Laboratory of Meat and Fish Technology, Department of Animal Production and Food Science, Faculty of Veterinary Sciences, University of Zaragoza, C/Miguel Servet, 177, 50013 Zaragoza, Spain.
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Kohlenstoffmonoxid freisetzende Moleküle für die therapeutische CO-Verabreichung in vivo. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311225] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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García-Gallego S, Bernardes GJL. Carbon-monoxide-releasing molecules for the delivery of therapeutic CO in vivo. Angew Chem Int Ed Engl 2014; 53:9712-21. [PMID: 25070185 DOI: 10.1002/anie.201311225] [Citation(s) in RCA: 244] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 02/17/2014] [Indexed: 11/07/2022]
Abstract
The development of carbon-monoxide-releasing molecules (CORMs) as pharmaceutical agents represents an attractive and safer alternative to administration of gaseous CO. Most CORMs developed to date are transition-metal carbonyl complexes. Although such CORMs have showed promising results in the treatment of a number of animal models of disease, they still lack the necessary attributes for clinical development. Described in this Minireview are the methods used for CORM selection, to date, and how new insights into the reactivity of metal-carbonyl complexes in vivo, together with advances in methods for live-cell CO detection, are driving the design and synthesis of new CORMs, CORMs that will enable controlled CO release in vivo in a spatial and temporal manner without affecting oxygen transport by hemoglobin.
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Affiliation(s)
- Sandra García-Gallego
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW Cambridge (UK); Present Address: Polymer and Fibre Technology, KTH Royal Institute of Technology, 100 44 Stockholm (Sweden)
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Droghetti E, Focardi C, Nocentini M, Smulevich G. A spectrophotometric method for the detection of carboxymyoglobin in beef drip. Int J Food Sci Technol 2012. [DOI: 10.1111/j.1365-2621.2012.03205.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Enrica Droghetti
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13; Sesto Fiorentino (FI); I-50019; Italy
| | - Claudia Focardi
- Istituto Zooprofilattico Sperimentale delle Regioni Lazio e Toscana; Sezione di Firenze; Via di Castelpulci 41; San Martino alla Palma (FI); I-50010; Italy
| | - Mila Nocentini
- Istituto Zooprofilattico Sperimentale delle Regioni Lazio e Toscana; Sezione di Firenze; Via di Castelpulci 41; San Martino alla Palma (FI); I-50010; Italy
| | - Giulietta Smulevich
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13; Sesto Fiorentino (FI); I-50019; Italy
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Photochemically activated carbon monoxide release for biological targets. Toward developing air-stable photoCORMs labilized by visible light. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.12.009] [Citation(s) in RCA: 177] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Droghetti E, Bartolucci GL, Focardi C, Bambagiotti-Alberti M, Nocentini M, Smulevich G. Development and validation of a quantitative spectrophotometric method to detect the amount of carbon monoxide in treated tuna fish. Food Chem 2011. [DOI: 10.1016/j.foodchem.2011.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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