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Bus K, Sitkowski J, Bocian W, Zmysłowski A, Ofiara K, Szterk A. Separation of menaquinone-7 geometric isomers by semipreparative high-performance liquid chromatography with silver complexation and identification by nuclear magnetic resonance. Food Chem 2022; 368:130890. [PMID: 34438182 DOI: 10.1016/j.foodchem.2021.130890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/21/2021] [Accepted: 08/14/2021] [Indexed: 11/04/2022]
Abstract
Dietary supplements containing vitamin K2 are often used to prevent osteoporosis, vascular calcification and coronary heart disease. It has been shown that some of these products contain a mixture of menaquinone-7 geometric isomers. Since the geometric shape may influence biological activity, there was a need for a semipreparative method to isolate single compounds for further studies. Here, we present an argentation chromatographic method for the separation of menaquinone-7 isomers and an nuclear magnetic resonance (NMR) methodology for the configuration assignment of isoprenoid side chain. The DFT calculations were performed to determine more energetically favorable complexes between the cis or trans menaquinone-7 isomers and the silver cation. Seventeen components were resolved, and fractions were collected and subjected to NMR study. Structures and chemical shifts for thirteen new compounds were assigned, and the identity of three known compounds was confirmed.
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Affiliation(s)
- Katarzyna Bus
- National Medicines Institute, Department of Spectrometric Methods, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Jerzy Sitkowski
- National Medicines Institute, Counterfeit Medicinal Products and Designer Drugs Department, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Wojciech Bocian
- National Medicines Institute, Counterfeit Medicinal Products and Designer Drugs Department, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Adam Zmysłowski
- National Medicines Institute, Department of Spectrometric Methods, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Karol Ofiara
- National Medicines Institute, Department of Spectrometric Methods, 30/34 Chełmska, 00-725 Warsaw, Poland
| | - Arkadiusz Szterk
- Center for Translationale Medicine Warsaw University for Life Sciences, Nowoursynowska 100, 02-797 Warsaw, Poland; Instytut Innowacji Przemysłowych MAT, 3/63 Rabindranatha Tagore, 02-647 Warsaw, Poland. %
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2
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Hirao K, Ono R, Manabe Y, Masui S, Atomi H, Fukase K. Total Syntheses of C60- and C100-Dolichols. J Org Chem 2020; 85:11549-11559. [PMID: 32786646 DOI: 10.1021/acs.joc.0c01327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
C60- and C100-dolichols were synthesized. A Z-selective Wittig reaction was achieved with high selectivity in a microflow system to realize the scalable supply of the Z-isoprene unit. An isoprene chain was efficiently elongated by an SN2-type coupling between allyl sulfone and allyl chloride using t-BuOK. These key reactions enabled the efficient syntheses of dolichols. This study will pave the way for the functional studies of dolichols.
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Affiliation(s)
- Kohtaro Hirao
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Risako Ono
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yoshiyuki Manabe
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Seiji Masui
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Haruyuki Atomi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan.,Core for Medicine and Science Collaborative Research and Education, Project Research Center for Fundamental Sciences, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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3
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Makhiyanov N, Smetannikov OV. Microstructure of Products of Isoprene Polymerization on Titanium–Magnesium Catalysts: an NMR Study. RUSS J APPL CHEM+ 2019. [DOI: 10.1134/s107042721905015x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Sitkowski J, Bocian W, Szterk A. The application of multidimensional NMR analysis to cis/trans isomers study of menaquinone-7 (vitamine K2MK-7), identification of the (E,Z3,E2,ω)-menaquinone-7 isomer in dietary supplements. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Lee M, Hesek D, Zajíček J, Fisher JF, Mobashery S. Synthesis and shift-reagent-assisted full NMR assignment of bacterial (Z 8,E 2,ω)-undecaprenol. Chem Commun (Camb) 2017; 53:12774-12777. [PMID: 29139490 PMCID: PMC5749266 DOI: 10.1039/c7cc06781j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The repeating isoprene unit is a fundamental biosynthetic motif. The repetitive structure presents challenges both for synthesis and for structural characterization. In this synthesis of the (Z8,E2,ω)-undecaprenol of prokaryotic glycobiology, we exemplify solutions to these challenges. Allylation of sulfone-derived carbanions controlled the stereochemistry, and its proof-of-structure was secured by Eu(hfc)3 complexation to disperse the overlaid resonances of its 1H NMR spectrum.
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Affiliation(s)
- Mijoon Lee
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.
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6
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Lebar MD, May JM, Meeske AJ, Leiman SA, Lupoli TJ, Tsukamoto H, Losick R, Rudner DZ, Walker S, Kahne D. Reconstitution of peptidoglycan cross-linking leads to improved fluorescent probes of cell wall synthesis. J Am Chem Soc 2014; 136:10874-7. [PMID: 25036369 PMCID: PMC4132960 DOI: 10.1021/ja505668f] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
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The
peptidoglycan precursor, Lipid II, produced in the model Gram-positive
bacterium Bacillus subtilis differs from Lipid II
found in Gram-negative bacteria such as Escherichia coli by a single amidation on the peptide side chain. How this difference
affects the cross-linking activity of penicillin-binding proteins
(PBPs) that assemble peptidoglycan in cells has not been investigated
because B. subtilis Lipid II was not previously available.
Here we report the synthesis of B. subtilis Lipid
II and its use by purified B. subtilis PBP1 and E. coli PBP1A. While enzymes from both organisms assembled B. subtilis Lipid II into glycan strands, only the B. subtilis enzyme cross-linked the strands. Furthermore, B. subtilis PBP1 catalyzed the exchange of both d-amino acids and d-amino carboxamides into nascent peptidoglycan,
but the E. coli enzyme only exchanged d-amino
acids. We exploited these observations to design a fluorescent d-amino carboxamide probe to label B. subtilis PG in vivo and found that this probe labels the cell wall dramatically
better than existing reagents.
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Affiliation(s)
- Matthew D Lebar
- Department of Chemistry and Chemical Biology, Harvard University , Cambridge, Massachusetts 02138, United States
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Liu F, Vijayakrishnan B, Faridmoayer A, Taylor TA, Parsons TB, Bernardes GJL, Kowarik M, Davis BG. Rationally designed short polyisoprenol-linked PglB substrates for engineered polypeptide and protein N-glycosylation. J Am Chem Soc 2013; 136:566-9. [PMID: 24377322 DOI: 10.1021/ja409409h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The lipid carrier specificity of the protein N-glycosylation enzyme C. jejuni PglB was tested using a logical, synthetic array of natural and unnatural C10, C20, C30, and C40 polyisoprenol sugar pyrophosphates, including those bearing repeating cis-prenyl units. Unusual, short, synthetically accessible C20 prenols (nerylnerol 1d and geranylnerol 1e) were shown to be effective lipid carriers for PglB sugar substrates. Kinetic analyses for PglB revealed clear K(M)-only modulation with lipid chain length, thereby implicating successful in vitro application at appropriate concentrations. This was confirmed by optimized, efficient in vitro synthesis allowing >90% of Asn-linked β-N-GlcNAc-ylated peptide and proteins. This reveals a simple, flexible biocatalytic method for glycoconjugate synthesis using PglB N-glycosylation machinery and varied chemically synthesized glycosylation donor precursors.
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Affiliation(s)
- Feng Liu
- Department of Chemistry, Chemistry Research Laboratory, Oxford University , Oxford OX1 3TA United Kingdom
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Nakamura J, Yamashiro H, Miya H, Nishiguchi K, Maki H, Arimoto H. Staphylococcus aureus Penicillin-Binding Protein 2 Can Use Depsi-Lipid II Derived from Vancomycin-Resistant Strains for Cell Wall Synthesis. Chemistry 2013; 19:12104-12. [PMID: 23873669 PMCID: PMC4235313 DOI: 10.1002/chem.201301074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Indexed: 01/16/2023]
Abstract
Vancomycin-resistant Staphylococcus aureus (S. aureus) (VRSA) uses depsipeptide-containing modified cell-wall precursors for the biosynthesis of peptidoglycan. Transglycosylase is responsible for the polymerization of the peptidoglycan, and the penicillin-binding protein 2 (PBP2) plays a major role in the polymerization among several transglycosylases of wild-type S. aureus. However, it is unclear whether VRSA processes the depsipeptide-containing peptidoglycan precursor by using PBP2. Here, we describe the total synthesis of depsi-lipid I, a cell-wall precursor of VRSA. By using this chemistry, we prepared a depsi-lipid II analogue as substrate for a cell-free transglycosylation system. The reconstituted system revealed that the PBP2 of S. aureus is able to process a depsi-lipid II intermediate as efficiently as its normal substrate. Moreover, the system was successfully used to demonstrate the difference in the mode of action of the two antibiotics moenomycin and vancomycin.
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Affiliation(s)
- Jun Nakamura
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577 (Japan), Fax: (+81) 0-22-217-6204
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Lebar MD, Lupoli TJ, Tsukamoto H, May JM, Walker S, Kahne D. Forming cross-linked peptidoglycan from synthetic gram-negative Lipid II. J Am Chem Soc 2013; 135:4632-5. [PMID: 23480167 DOI: 10.1021/ja312510m] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The bacterial cell wall precursor, Lipid II, has a highly conserved structure among different organisms except for differences in the amino acid sequence of the peptide side chain. Here, we report an efficient and flexible synthesis of the canonical Lipid II precursor required for the assembly of Gram-negative peptidoglycan (PG). We use a rapid LC/MS assay to analyze PG glycosyltransfer (PGT) and transpeptidase (TP) activities of Escherichia coli penicillin binding proteins PBP1A and PBP1B and show that the native m-DAP residue in the peptide side chain of Lipid II is required in order for TP-catalyzed peptide cross-linking to occur in vitro. Comparison of PG produced from synthetic canonical E. coli Lipid II with PG isolated from E. coli cells demonstrates that we can produce PG in vitro that resembles native structure. This work provides the tools necessary for reconstituting cell wall synthesis, an essential cellular process and major antibiotic target, in a purified system.
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Affiliation(s)
- Matthew D Lebar
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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