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Sonego JM, de Diego SI, Szajnman SH, Gallo-Rodriguez C, Rodriguez JB. Organoselenium Compounds: Chemistry and Applications in Organic Synthesis. Chemistry 2023; 29:e202300030. [PMID: 37378970 DOI: 10.1002/chem.202300030] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/18/2023] [Accepted: 06/28/2023] [Indexed: 06/29/2023]
Abstract
Selenium, originally described as a toxin, turns out to be a crucial trace element for life that appears as selenocysteine and its dimer, selenocystine. From the point of view of drug developments, selenium-containing drugs are isosteres of sulfur and oxygen with the advantage that the presence of the selenium atom confers antioxidant properties and high lipophilicity, which would increase cell membrane permeation leading to better oral bioavailability. In this article, we have focused on the relevant features of the selenium atom, above all, the corresponding synthetic approaches to access a variety of organoselenium molecules along with the proposed reaction mechanisms. The preparation and biological properties of selenosugars, including selenoglycosides, selenonucleosides, selenopeptides, and other selenium-containing compounds will be treated. We have attempted to condense the most important aspects and interesting examples of the chemistry of selenium into a single article.
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Affiliation(s)
- Juan M Sonego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sheila I de Diego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sergio H Szajnman
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Carola Gallo-Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EHA, Buenos Aires, Argentina
| | - Juan B Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
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2
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Raics M, Balogh ÁK, Kishor C, Timári I, Medrano FJ, Romero A, Go RM, Blanchard H, Szilágyi L, E. Kövér K, Fehér K. Investigation of the Molecular Details of the Interactions of Selenoglycosides and Human Galectin-3. Int J Mol Sci 2022; 23:2494. [PMID: 35269646 PMCID: PMC8910297 DOI: 10.3390/ijms23052494] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/09/2022] [Accepted: 02/12/2022] [Indexed: 12/19/2022] Open
Abstract
Human galectin-3 (hGal-3) is involved in a variety of biological processes and is implicated in wide range of diseases. As a result, targeting hGal-3 for clinical applications has become an intense area of research. As a step towards the development of novel hGal-3 inhibitors, we describe a study of the binding of two Se-containing hGal-3 inhibitors, specifically that of di(β-D-galactopyranosyl)selenide (SeDG), in which two galactose rings are linked by one Se atom and a di(β-D-galactopyranosyl)diselenide (DSeDG) analogue with a diseleno bond between the two sugar units. The binding affinities of these derivatives to hGal-3 were determined by 15N-1H HSQC NMR spectroscopy and fluorescence anisotropy titrations in solution, indicating a slight decrease in the strength of interaction for SeDG compared to thiodigalactoside (TDG), a well-known inhibitor of hGal-3, while DSeDG displayed a much weaker interaction strength. NMR and FA measurements showed that both seleno derivatives bind to the canonical S face site of hGal-3 and stack against the conserved W181 residue also confirmed by X-ray crystallography, revealing canonical properties of the interaction. The interaction with DSeDG revealed two distinct binding modes in the crystal structure which are in fast exchange on the NMR time scale in solution, explaining a weaker interaction with hGal-3 than SeDG. Using molecular dynamics simulations, we have found that energetic contributions to the binding enthalpies mainly differ in the electrostatic interactions and in polar solvation terms and are responsible for weaker binding of DSeDG compared to SeDG. Selenium-containing carbohydrate inhibitors of hGal-3 showing canonical binding modes offer the potential of becoming novel hydrolytically stable scaffolds for a new class of hGal-3 inhibitors.
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Affiliation(s)
- Mária Raics
- Molecular Recognition and Interaction Research Group, Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (M.R.); (Á.K.B.)
| | - Álex Kálmán Balogh
- Molecular Recognition and Interaction Research Group, Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (M.R.); (Á.K.B.)
| | - Chandan Kishor
- School of Chemistry and Molecular Bioscience and Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, Australia;
| | - István Timári
- Department of Organic Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (I.T.); (L.S.)
| | - Francisco J. Medrano
- Structural and Chemical Biology, Centro de Investigaciones Biolόgicas, Margarita Salas, CSIC Ramiro de Maeztu 9, 28040 Madrid, Spain; (F.J.M.); (A.R.)
| | - Antonio Romero
- Structural and Chemical Biology, Centro de Investigaciones Biolόgicas, Margarita Salas, CSIC Ramiro de Maeztu 9, 28040 Madrid, Spain; (F.J.M.); (A.R.)
| | - Rob Marc Go
- Institute for Glycomics, Griffith University, Gold Coast, QLD 4222, Australia;
| | - Helen Blanchard
- Institute for Glycomics, Griffith University, Gold Coast, QLD 4222, Australia;
| | - László Szilágyi
- Department of Organic Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (I.T.); (L.S.)
| | - Katalin E. Kövér
- Molecular Recognition and Interaction Research Group, Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (M.R.); (Á.K.B.)
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Krisztina Fehér
- Molecular Recognition and Interaction Research Group, Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (M.R.); (Á.K.B.)
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3
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Heavy Atom Detergent/Lipid Combined X-ray Crystallography for Elucidating the Structure-Function Relationships of Membrane Proteins. MEMBRANES 2021; 11:membranes11110823. [PMID: 34832053 PMCID: PMC8625833 DOI: 10.3390/membranes11110823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 02/03/2023]
Abstract
Membrane proteins reside in the lipid bilayer of biomembranes and the structure and function of these proteins are closely related to their interactions with lipid molecules. Structural analyses of interactions between membrane proteins and lipids or detergents that constitute biological or artificial model membranes are important for understanding the functions and physicochemical properties of membrane proteins and biomembranes. Determination of membrane protein structures is much more difficult when compared with that of soluble proteins, but the development of various new technologies has accelerated the elucidation of the structure-function relationship of membrane proteins. This review summarizes the development of heavy atom derivative detergents and lipids that can be used for structural analysis of membrane proteins and their interactions with detergents/lipids, including their application with X-ray free-electron laser crystallography.
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Fukuo H, Suzuki T, Shimabukuro J, Komura N, Tanaka H, Imamura A, Ishida H, Ando H. Synthesis of Diverse Seleno‐Glycolipids
via
the Transacetalization of Selenoacetals. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hayata Fukuo
- Department of Applied Bioorganic Chemistry Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Tatsuya Suzuki
- Department of Applied Bioorganic Chemistry Gifu University 1-1 Yanagido Gifu 501-1193 Japan
- Current address: Faculty of Pharmaceutical Sciences Aomori University 2-3-1 Koubata Aomori-shi Aomori 030-0943 Japan
| | - Junpei Shimabukuro
- Department of Applied Bioorganic Chemistry Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Naoko Komura
- Institute for Glyco-core Research (iGCORE) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Hide‐Nori Tanaka
- Institute for Glyco-core Research (iGCORE) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Akihiro Imamura
- Department of Applied Bioorganic Chemistry Gifu University 1-1 Yanagido Gifu 501-1193 Japan
- Institute for Glyco-core Research (iGCORE) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Hideharu Ishida
- Department of Applied Bioorganic Chemistry Gifu University 1-1 Yanagido Gifu 501-1193 Japan
- Institute for Glyco-core Research (iGCORE) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Hiromune Ando
- Institute for Glyco-core Research (iGCORE) Gifu University 1-1 Yanagido Gifu 501-1193 Japan
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5
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Cañada FJ, Canales Á, Valverde P, de Toro BF, Martínez-Orts M, Phillips PO, Pereda A. Conformational and Structural characterization of carbohydrates and their interactions studied by NMR. Curr Med Chem 2021; 29:1147-1172. [PMID: 34225601 DOI: 10.2174/0929867328666210705154046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/30/2021] [Accepted: 05/12/2021] [Indexed: 11/22/2022]
Abstract
Carbohydrates, either free or as glycans conjugated with other biomolecules, participate in many essential biological processes. Their apparent simplicity in terms of chemical functionality hides an extraordinary diversity and structural complexity. Deeply deciphering at the atomic level their structures is essential to understand their biological function and activities, but it is still a challenging task in need of complementary approaches and no generalized procedures are available to address the study of such complex, natural glycans. The versatility of Nuclear Magnetic Resonance spectroscopy (NMR) often makes it the preferred choice to study glycans and carbohydrates in solution media. The most basic NMR parameters, namely chemical shifts, coupling constants and nuclear Overhauser effects, allow defining short or repetitive chain sequences and characterize their structures and local geometries either in the free state or when interacting with other biomolecules, rendering additional information on the molecular recognition processes. The increased accessibility to carbohydrate molecules extensively or selectively labeled with 13C boosts the resolution and detail that analyzed glycan structures can reach. In turn, structural information derived from NMR, complemented with molecular modeling and theoretical calculations can also provide dynamic information on the conformational flexibility of carbohydrate structures. Furthermore, using partially oriented media or paramagnetic perturbations, it has been possible to introduce additional long-range observables rendering structural information on longer and branched glycan chains. In this review, we provide examples of these studies and an overview of the recent and most relevant NMR applications in the glycobiology field.
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Affiliation(s)
- Francisco Javier Cañada
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, CSIC, 28040 Madrid, Spain
| | - Ángeles Canales
- Departamento de Química Orgánica I, Facultad Ciencias Químicas, Universidad Complutense de Madrid, Avd. Complutense s/n, C.P. 28040 Madrid, Spain
| | - Pablo Valverde
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, CSIC, 28040 Madrid, Spain
| | - Beatriz Fernández de Toro
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, CSIC, 28040 Madrid, Spain
| | - Mónica Martínez-Orts
- Departamento de Química Orgánica I, Facultad Ciencias Químicas, Universidad Complutense de Madrid, Avd. Complutense s/n, C.P. 28040 Madrid, Spain
| | - Paola Oquist Phillips
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, CSIC, 28040 Madrid, Spain
| | - Amaia Pereda
- Structural and Chemical Biology Department, Centro de Investigaciones Biológicas Margarita Salas, CSIC, 28040 Madrid, Spain
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6
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Iadonisi A, Traboni S, Capasso D, Bedini E, Cuomo S, Di Gaetano S, Vessella G. Switchable synthesis of glycosyl selenides or diselenides with direct use of selenium as the selenating agent. Org Chem Front 2021. [DOI: 10.1039/d1qo00045d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Chemoselective synthesis of either diglycosyl selenides or diselenides. Elementary selenium as the selenating agent.
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Affiliation(s)
- Alfonso Iadonisi
- Department of Chemical Sciences
- University of Naples Federico II
- 80126 Naples
- Italy
| | - Serena Traboni
- Department of Chemical Sciences
- University of Naples Federico II
- 80126 Naples
- Italy
| | - Domenica Capasso
- Department of Pharmacy
- University of Naples Federico II
- 80134 Naples
- Italy
| | - Emiliano Bedini
- Department of Chemical Sciences
- University of Naples Federico II
- 80126 Naples
- Italy
| | - Sabrina Cuomo
- Department of Chemical Sciences
- University of Naples Federico II
- 80126 Naples
- Italy
| | | | - Giulia Vessella
- Department of Chemical Sciences
- University of Naples Federico II
- 80126 Naples
- Italy
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7
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Zhu M, Alami M, Messaoudi S. Room-Temperature Pd-Catalyzed Synthesis of 1-(Hetero)aryl Selenoglycosides. Org Lett 2020; 22:6584-6589. [PMID: 32806176 DOI: 10.1021/acs.orglett.0c02352] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A general protocol for functionalization of an anomeric selonate anion at room temperature has been reported. By using the PdG3 XantPhos catalyst, the cross-coupling between the in situ-generated glycosyl selenolate and a broad range of (hetero)aryl and alkenyl iodides furnished a series of functionalized selenoglycosides in excellent yields with perfect control of the anomeric configuration.
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Affiliation(s)
- Mingxiang Zhu
- BioCIS, Univ. Paris-Sud, CNRS, University Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Mouad Alami
- BioCIS, Univ. Paris-Sud, CNRS, University Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Samir Messaoudi
- BioCIS, Univ. Paris-Sud, CNRS, University Paris-Saclay, 92290 Châtenay-Malabry, France
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8
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Valverde P, Vendeville JB, Hollingsworth K, Mattey AP, Keenan T, Chidwick H, Ledru H, Huonnic K, Huang K, Light ME, Turner N, Jiménez-Barbero J, Galan MC, Fascione MA, Flitsch S, Turnbull WB, Linclau B. Chemoenzymatic synthesis of 3-deoxy-3-fluoro-l-fucose and its enzymatic incorporation into glycoconjugates. Chem Commun (Camb) 2020; 56:6408-6411. [DOI: 10.1039/d0cc02209h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A chemoenzymatic synthesis of 3-deoxy-3-fluoro-l-fucose, using a d- to l-sugar translation strategy, and its enzymatic activation and glycosylation, is reported.
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9
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Suzuki T, Hayashi C, Komura N, Tamai R, Uzawa J, Ogawa J, Tanaka HN, Imamura A, Ishida H, Kiso M, Yamaguchi Y, Ando H. Synthesis and Glycan-Protein Interaction Studies of Se-Sialosides by 77Se NMR. Org Lett 2019; 21:6393-6396. [PMID: 31393132 DOI: 10.1021/acs.orglett.9b02303] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To expand the potential of Se-carbohydrates for multifunctional mimicry of sugars, herein we addressed the synthesis of the highly challenging and biologically significant Se-glycosides of sialic acid (Se-sialosides). An α-sialyl selenolate anion generated in situ smoothly reacted with electrophiles to give α-Se-sialosides as single stereoisomers. A Se-sialoside was sequentially incorporated with selenium, producing a triseleno-sialoside. This molecule was used as a 77Se NMR-active handle for studying glycan-protein interaction, revealing different binding profiles of sialic acid binding proteins.
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Affiliation(s)
- Tatsuya Suzuki
- Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Chieka Hayashi
- Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Naoko Komura
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN) , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Rie Tamai
- Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Jun Uzawa
- Structural Glycobiology Team, Systems Glycobiology Research Group , RIKEN Global Research Cluster , 2-1 Hirosawa, Wako-shi, Saitama 351-0198 , Japan
| | - Junya Ogawa
- Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Hide-Nori Tanaka
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN) , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Akihiro Imamura
- Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Hideharu Ishida
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN) , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan.,Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan
| | - Makoto Kiso
- Department of Applied Bioorganic Chemistry , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan.,Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto , Japan
| | - Yoshiki Yamaguchi
- Structural Glycobiology Team, Systems Glycobiology Research Group , RIKEN Global Research Cluster , 2-1 Hirosawa, Wako-shi, Saitama 351-0198 , Japan
| | - Hiromune Ando
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN) , Gifu University , 1-1, Yanagido , Gifu-shi, Gifu 501-1193 , Japan.,Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Yoshida Ushinomiya-cho, Sakyo-ku, Kyoto , Japan
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10
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Singh RS, Walia AK, Kennedy JF. Structural aspects and biomedical applications of microfungal lectins. Int J Biol Macromol 2019; 134:1097-1107. [DOI: 10.1016/j.ijbiomac.2019.05.093] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/15/2019] [Accepted: 05/15/2019] [Indexed: 11/17/2022]
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11
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Raics M, Timári I, Diercks T, Szilágyi L, Gabius H, Kövér KE. Selenoglycosides as Lectin Ligands: 77 Se-Edited CPMG-HSQMBC NMR Spectroscopy To Monitor Biomedically Relevant Interactions. Chembiochem 2019; 20:1688-1692. [PMID: 30828921 PMCID: PMC6618100 DOI: 10.1002/cbic.201900088] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Indexed: 12/25/2022]
Abstract
The fundamental importance of protein-glycan recognition calls for specific and sensitive high-resolution techniques for their detailed analysis. After the introduction of 19 F NMR spectroscopy to study the recognition of fluorinated glycans, a new 77 Se NMR spectroscopy method is presented for complementary studies of selenoglycans with optimised resolution and sensitivity, in which direct NMR spectroscopy detection on 77 Se is replaced by its indirect observation in a 2D 1 H,77 Se HSQMBC spectrum. In contrast to OH/F substitution, O/Se exchange allows the glycosidic bond to be targeted. As an example, selenodigalactoside recognition by three human galectins and a plant toxin is readily indicated by signal attenuation and line broadening in the 2D 1 H,77 Se HSQMBC spectrum, in which CPMG-INEPT long-range transfer ensures maximal detection sensitivity, clean signal phases, and reliable ligand ranking. By monitoring competitive displacement of a selenated spy ligand, the selective 77 Se NMR spectroscopy approach may also be used to screen non-selenated compounds. Finally, 1 H,77 Se CPMG-INEPT transfer allows further NMR sensors of molecular interaction to be combined with the specificity and resolution of 77 Se NMR spectroscopy.
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Affiliation(s)
- Mária Raics
- Department of Inorganic and Analytical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - István Timári
- Department of Inorganic and Analytical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Tammo Diercks
- NMR FacilityCIC bioGUNEBizkaia Technology Park, Bld 80048170DerioSpain
| | - László Szilágyi
- Department of Organic ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Hans‐Joachim Gabius
- Tierärztliche Fakultät, Institut für Physiologische ChemieLudwig-Maximilians-Universität MünchenVeterinärstrasse 1380539MunichGermany
| | - Katalin E. Kövér
- Department of Inorganic and Analytical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
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12
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Uzawa J, Shimabukuro J, Suzuki T, Imamura A, Ishida H, Ando H, Yamaguchi Y. J( 77 Se, 1 H) and J( 77 Se, 13 C) couplings of seleno-carbohydrates obtained by 77 Se satellite 1D 13 C spectroscopy and 77 Se selective HR-HMBC spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2018; 56:836-846. [PMID: 29693283 DOI: 10.1002/mrc.4746] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/08/2018] [Accepted: 04/14/2018] [Indexed: 06/08/2023]
Abstract
Seleno-carbohydrates are those in which the oxygen of the glycosidic bond or the hydroxyl group is artificially replaced with selenium. This substitution changes 1 H and 13 C chemical shifts and produces spin coupling constants involving 77 Se. Coupling constants, such as 2-3 J(77 Se, 1 H), are likely to be useful for conformational analyses of glycans because such couplings are never observed in natural glycans. Several papers have discussed the relationship between 2-3 J(77 Se, 1 H) and conformation; however, only few reports describe 1-3 J(77 Se, 13 C), which could also be useful. Here, we obtain 77 Se coupling constants of seleno-carbohydrates from 77 Se-selective HR-HMBC and 77 Se satellites in 1D 13 C spectra and examine their conformations using the Newman projection scheme.
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Affiliation(s)
- Jun Uzawa
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN Global Research Cluster, Wako, Japan
| | - Junpei Shimabukuro
- Department of Applied Bioorganic Chemistry, Gifu University, Gifu, Japan
| | - Tatsuya Suzuki
- Department of Applied Bioorganic Chemistry, Gifu University, Gifu, Japan
| | - Akihiro Imamura
- Department of Applied Bioorganic Chemistry, Gifu University, Gifu, Japan
| | - Hideharu Ishida
- Department of Applied Bioorganic Chemistry, Gifu University, Gifu, Japan
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, Gifu, Japan
| | - Hiromune Ando
- Department of Applied Bioorganic Chemistry, Gifu University, Gifu, Japan
- Center for Highly Advanced Integration of Nano and Life Sciences (G-CHAIN), Gifu University, Gifu, Japan
| | - Yoshiki Yamaguchi
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN Global Research Cluster, Wako, Japan
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