1
|
Han Y, Luo Y, Ma BD, Li J, Xu JH, Kong XD. Structural Insights of a cis-Epoxysuccinate Hydrolase Facilitate the Development of Robust Biocatalysts for the Production of l-(+)-Tartrate. Biochemistry 2024; 63:1578-1587. [PMID: 38803051 DOI: 10.1021/acs.biochem.4c00141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
l-(+)-Tartaric acid plays important roles in various industries, including pharmaceuticals, foods, and chemicals. cis-Epoxysuccinate hydrolases (CESHs) are crucial for converting cis-epoxysuccinate to l-(+)-tartrate in the industrial production process. There is, however, a lack of detailed structural and mechanistic information on CESHs, limiting the discovery and engineering of these industrially relevant enzymes. In this study, we report the crystal structures of RoCESH and KoCESH-l-(+)-tartrate complex. These structures reveal the key amino acids of the active pocket and the catalytic triad residues and elucidate a dynamic catalytic process involving conformational changes of the active site. Leveraging the structural insights, we identified a robust BmCESH (550 ± 20 U·mg-1) with sustained catalytic activity even at a 3 M substrate concentration. After six batches of transformation, immobilized cells with overexpressed BmCESH maintained 69% of their initial activity, affording an overall productivity of 200 g/L/h. These results provide valuable insights into the development of high-efficiency CESHs and the optimization of biotransformation processes for industrial uses.
Collapse
Affiliation(s)
- Yu Han
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 429 Zhangheng Road, Shanghai 201203, China
| | - Yuelin Luo
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Bao-Di Ma
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 429 Zhangheng Road, Shanghai 201203, China
| | - Jie Li
- National Facility for Protein Science in Shanghai (NFPS), Shanghai Advanced Research Institute, Chinese Academy of Science, 333 Haike Road, Shanghai 201203, China
| | - Jian-He Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xu-Dong Kong
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
- Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 429 Zhangheng Road, Shanghai 201203, China
| |
Collapse
|
2
|
Stable Isotope Ratio Analysis for the Authentication of Natural Antioxidant Curcuminoids from Curcuma longa (Turmeric). Antioxidants (Basel) 2023; 12:antiox12020498. [PMID: 36830056 PMCID: PMC9952763 DOI: 10.3390/antiox12020498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/03/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023] Open
Abstract
Curcuminoid complex, a mixture of curcumin, demethoxycurcumin and didemethoxycurcumin, is one of the most popular antioxidants of natural origin, and it has a multitude of other health benefits. It is threatened by the proliferation of counterfeit products on the market containing synthetic curcuminoids whose addition is difficult to identify as they present the three curcuminoid forms in the correct ratios. Consequently, the necessity to detect this fraudulent practice is escalating. Carbon-14 analysis is the most effective available method, but it is also expensive and difficult to implement. This paper describes the first attempt to characterize natural curcuminoids and their synthetic form, used as an adulterant, through the analysis of stable isotope ratios of carbon and hydrogen (expressed as δ13C and δ2H). Carbon values greater than -28.6‱ and hydrogen values greater than -71‱ may indicate the addition of synthetic curcuminoids to the natural ones.
Collapse
|
3
|
Stable isotope ratio analysis as a fast and simple method for identifying the origin of chitosan. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105516] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
4
|
Stable isotope ratio analysis for authentication of red yeast rice. Talanta 2017; 174:228-233. [DOI: 10.1016/j.talanta.2017.05.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 05/15/2017] [Accepted: 05/20/2017] [Indexed: 11/18/2022]
|
5
|
Zyakun AM, Oganesyants LA, Panasyuk AL, Kuz'mina EI, Shilkin AA, Baskunov BP, Zakharchenko VN, Peshenko VP. Site-specific (13) С/(12) С isotope abundance ratios in dicarboxylic oxyacids as characteristics of their origin. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:2026-2030. [PMID: 26443402 DOI: 10.1002/rcm.7307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/03/2015] [Accepted: 08/06/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE Recommendations of relevant international organizations controlling the quality of grape wines and beverages specify that only tartaric acids of grape origin can be introduced to achieve the required parameters. The development of methods for determining the origin of tartaric acid in grape wine is of great technological significance. METHODS Organic dicarboxylic oxyacids were extracted from wines as barium salts. Carbon dioxide, which included all the carbon atoms of the acids, was used to determine the carbon isotope ratios by Isotope Ratio Mass Spectrometry. The alkyl part of the oxyacids was burned at 560°C in the presence of air; BaCO3 containing the carboxyl carbon was left. This carbonate was used to measure the carbon isotope ratios in the carboxyl part of the acid. The carbon isotope ratios of the alkyl part of tartaric acid were found by isotope mass balance. RESULTS The carbon isotope composition of carboxyl groups (δ(13) С values) in tartaric acid of grape (biogenic origin) had a higher (13) С content than the carbon in the alkyl part of the molecule. Tartaric acid produced by chemical synthesis (abiogenic origin) was noted to have a different (13) С/(12) С distribution: the carboxyl group of tartaric acid produced by chemical synthesis contained a smaller than or equal amount of (13) С to the alkyl part. CONCLUSIONS This is the first determination of the site-specific distribution of the (13) С/(12) С isotopes in tartaric acids as evidence of their biogenic and abiogenic origins. The presented method for determining the origin of tartaric acid can be used for efficient control of the quality of grape wines and beverages.
Collapse
Affiliation(s)
- Anatoly M Zyakun
- FSBIS G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - Lev A Oganesyants
- FSBIS All-Russian Research Institute of Brewing, Non-alcoholic and Wine-making Industry, Moscow, 119021, Russia
| | - Alexander L Panasyuk
- FSBIS All-Russian Research Institute of Brewing, Non-alcoholic and Wine-making Industry, Moscow, 119021, Russia
| | - Elena I Kuz'mina
- FSBIS All-Russian Research Institute of Brewing, Non-alcoholic and Wine-making Industry, Moscow, 119021, Russia
| | - Aleksey A Shilkin
- FSBIS All-Russian Research Institute of Brewing, Non-alcoholic and Wine-making Industry, Moscow, 119021, Russia
| | - Boris P Baskunov
- FSBIS G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - Vladimir N Zakharchenko
- FSBIS G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| | - Valentina P Peshenko
- FSBIS G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
| |
Collapse
|
6
|
Christoph N, Hermann A, Wachter H. 25 Years authentication of wine with stable isotope analysis in the European Union – Review and outlook. BIO WEB OF CONFERENCES 2015. [DOI: 10.1051/bioconf/20150502020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|
7
|
Potentials and caveats with oxygen and sulfur stable isotope analyses in authenticity and origin checks of food and food commodities. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.06.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Georgiou CA, Danezis GP. Elemental and Isotopic Mass Spectrometry. ADVANCED MASS SPECTROMETRY FOR FOOD SAFETY AND QUALITY 2015. [DOI: 10.1016/b978-0-444-63340-8.00003-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
9
|
Hu J, Dagle RA, Johnson BR, Kreuzer HW, Gaspar DJ, Roberts BQ, Alexander ML. Development of a Micropyrolyzer for Enhanced Isotope Ratio Measurement. Ind Eng Chem Res 2008. [DOI: 10.1021/ie8009236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianli Hu
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| | - Robert A. Dagle
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| | - Bradley R. Johnson
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| | - Helen W. Kreuzer
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| | - Daniel J. Gaspar
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| | - Benjamin Q. Roberts
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| | - M. Lizabeth Alexander
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354
| |
Collapse
|
10
|
Serra F, Janeiro A, Calderone G, Rojas JMM, Rhodes C, Gonthier LA, Martin F, Lees M, Mosandl A, Sewenig S, Hener U, Henriques B, Ramalho L, Reniero F, Teixeira AJ, Guillou C. Inter-laboratory comparison of elemental analysis and gas chromatography combustion isotope ratio mass spectrometry (GC-C-IRMS). Part I: delta13C measurements of selected compounds for the development of an isotopic Grob-test. JOURNAL OF MASS SPECTROMETRY : JMS 2007; 42:361-9. [PMID: 17238241 DOI: 10.1002/jms.1168] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
This study was directed towards investigating suitable compounds to be used as stable isotope reference materials for gas chromatography combustion isotope ratio mass spectrometry (GC-C-IRMS) calibration. Several compounds were selected from those used in the 'Grob-test' mixture. Oxygen- and nitrogen-containing substances were added to these compounds to allow the mixture to be used as a possible multi-isotopic calibration tool for 2H/1H, 13C/12C, 15N/14N and 18O/16O ratio determinations. In this paper we present the results of delta13C measurements performed by the consortium of the five laboratories taking part in this inter-calibration exercise. All the compounds were individually assessed for homogeneity, short-term stability and long-term stability by means of EA-IRMS, as required by the bureau communitaire de reference (BCR) Guide for Production of Certified Reference Materials. The results were compared then with the GC-C-IRMS measurements using both polar and non-polar columns, and the final mixture of selected compounds underwent a further certification exercise assessing limits of accuracy and reproducibility under specified GC-C-IRMS conditions.
Collapse
Affiliation(s)
- F Serra
- European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Physical and Chemical Exposure Unit, BEVABS, 21020 Ispra (VA), Italy.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Aramendía MA, Marinas A, Marinas JM, Moreno JM, Moalem M, Rallo L, Urbano FJ. Oxygen-18 measurement of Andalusian olive oils by continuous flow pyrolysis/isotope ratio mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:487-96. [PMID: 17221929 DOI: 10.1002/rcm.2862] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We report a method for the determination of delta(18)O isotopic abundance in olive oils. The results obtained by applying the method to various Andalusian oil samples obtained in the 2004/05 and 2005/06 seasons are discussed in relation to olive variety, geographical origin, climate and ripeness index. Application of the method to samples of assured varietal purity exposed the influence of olive variety and origin but not of the ripeness index. The delta(18)O values for the 2005/06 season are higher on average than those obtained in the colder 2004/05 season. Results obtained for samples of the Picual and Hojiblanca varieties in Córdoba and Málaga in the 2005/06 season suggest a correlation between enrichment in heavy isotopes and latitude whereas no clear-cut effect of altitude was observed.
Collapse
Affiliation(s)
- María A Aramendía
- Department of Organic Chemistry, University of Córdoba, Campus de Rabanales, Marie Curie Building, E-14014 Córdoba, Spain
| | | | | | | | | | | | | |
Collapse
|
12
|
Moreno Rojas JM, Cosofret S, Reniero F, Guillou C, Serra F. Control of oenological products: discrimination between different botanical sources of L-tartaric acid by isotope ratio mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:2447-50. [PMID: 17610238 DOI: 10.1002/rcm.3105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Following previous studies on counterfeit of wines with synthetic ingredients, the possibility of frauds by natural external L-tartaric acid has also been investigated. The aim of this research was to map the stable isotope ratios of L-tartaric acid coming from botanical species containing large amounts of this compound: grape and tamarind. Samples of L-tartaric acid were extracted from the pulp of tamarind fruits originating from several countries and from grape must. delta(13)C and delta(18)O were measured for all samples. Additional delta(2)H measurements were performed as a complementary analysis to help discrimination of the botanical origin. Different isotopic patterns were observed for the different botanical origins. The multivariate statistical analysis of the data shows clear discrimination among the different botanical and synthetic sources. This approach could be a complementary tool for the control of L-tartaric acid used in oenology.
Collapse
Affiliation(s)
- Jose Manuel Moreno Rojas
- European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Physical and Chemical Exposure Unit, MAST TP281 (BEVABS, TP740), Via Fermi 2, 21020 Ispra, Italy.
| | | | | | | | | |
Collapse
|
13
|
Current awareness in phytochemical analysis. PHYTOCHEMICAL ANALYSIS : PCA 2006; 17:134-41. [PMID: 16634291 DOI: 10.1002/pca.881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
|