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Møller MS, Cockburn DW, Wilkens C. Surface Plasmon Resonance Analysis for Quantifying Protein-Carbohydrate Interactions. Methods Mol Biol 2023; 2657:141-150. [PMID: 37149528 DOI: 10.1007/978-1-0716-3151-5_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
During the past two decades, surface plasmon resonance (SPR) analysis has emerged as an important tool for studying protein-carbohydrate interactions, with several commercial instruments available. Binding affinities in the nM to mM range can be determined; however, there are pitfalls that require careful experimental design to avoid. Here we give an overview of each step in the SPR analysis from immobilization to data analysis, providing key points of consideration that will allow practitioners to achieve reliable and reproducible results.
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Affiliation(s)
- Marie Sofie Møller
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Darrell W Cockburn
- Department of Food Science, The Pennsylvania State University, University Park, PA, USA
| | - Casper Wilkens
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs. Lyngby, Denmark.
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2
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Lukov VV, Tupolova YP, Shcherbakov IN, Popov LD, Gishko KB, Chetverikova VA. Coordination Chemistry and Magnetic Properties of Bi- and Polynuclear Exchange-Coupled Cu(II) and Ni(II) Metal Oximates. RUSS J COORD CHEM+ 2022. [DOI: 10.1134/s1070328422020038] [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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3
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Lukov VV, Tsaturyan AA, Tupolova YP, Popov LD, Shcherbakov IN, Lebedev VE, Askalepova OI, Lastovina TA, Lazarenko VA, Khustalev VN, Poler JC. Theoretical and experimental study of the coordination ability of 4,6-dimethylpyrimidinylhydrazone diacetylmonooxime towards Ni( ii), Mn( ii), Fe( iii) and Co( iii) ions. NEW J CHEM 2020. [DOI: 10.1039/c9nj05200c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The complexing ability of diacethylmonooxime 4,6-dimethylpyrimidylhydrazone ligand with Ni(ii), Mn(ii), Fe(iii) and Co(iii) salts have been studied.
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Affiliation(s)
- Vladimir V. Lukov
- Department of Chemistry
- Southern Federal University
- Rostov-on-Don
- Russia
| | - Arshak A. Tsaturyan
- Institute of Physical and Organic Chemistry
- Southern Federal University
- Rostov-on-Don
- Russia
| | - Yulia P. Tupolova
- Department of Chemistry
- Southern Federal University
- Rostov-on-Don
- Russia
| | - Leonid D. Popov
- Department of Chemistry
- Southern Federal University
- Rostov-on-Don
- Russia
| | | | | | | | | | | | - Victor N. Khustalev
- Inorganic Chemistry Department
- Peoples’ Friendship University of Russia
- Moscow
- Russia
| | - Jordan C. Poler
- Department of Chemistry
- University of North Carolina at Charlotte
- 28223 Charlotte
- USA
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4
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Østergaard M, Christensen NJ, Hjuler CT, Jensen KJ, Thygesen MB. Glycoconjugate Oxime Formation Catalyzed at Neutral pH: Mechanistic Insights and Applications of 1,4-Diaminobenzene as a Superior Catalyst for Complex Carbohydrates. Bioconjug Chem 2018; 29:1219-1230. [PMID: 29437382 DOI: 10.1021/acs.bioconjchem.8b00019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of unprotected carbohydrates with aminooxy reagents to provide oximes is a key method for the construction of glycoconjugates. Aniline and derivatives serve as organocatalysts for the formation of oximes from simple aldehydes, and we have previously reported that aniline also catalyzes the formation of oximes from the more complex aldehydes, carbohydrates. Here, we present a comprehensive study of the effect of aniline analogues on the formation of carbohydrate oximes and related glycoconjugates depending on organocatalyst structure, pH, nucleophile, and carbohydrate, covering more than 150 different reaction conditions. The observed superiority of the 1,4-diaminobenzene (PDA) catalyst at neutral pH is rationalized by NMR analyses and DFT studies of reaction intermediates. Carbohydrate oxime formation at pH 7 is demonstrated by the formation of a bioactive glycoconjugate from a labile, decorated octasaccharide originating from exopolysaccharides of the soil bacterium Mesorhizobium loti. This study of glycoconjugate formation includes the first direct comparison of aniline-catalyzed reaction rates and equilibrium constants for different classes of nucleophiles, including primary oxyamines, secondary N-alkyl oxyamines, as well as aryl and arylsulfonyl hydrazides. We identified 1,4-diaminobenzene as a superior catalyst for the construction of oxime-linked glycoconjugates under mild conditions.
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Affiliation(s)
- Mads Østergaard
- Department of Chemistry, Faculty of Science , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| | - Niels Johan Christensen
- Department of Chemistry, Faculty of Science , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| | - Christian T Hjuler
- Department of Chemistry, Faculty of Science , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| | - Knud J Jensen
- Department of Chemistry, Faculty of Science , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
| | - Mikkel B Thygesen
- Department of Chemistry, Faculty of Science , University of Copenhagen , Thorvaldsensvej 40 , DK-1871 Frederiksberg C , Denmark
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Hjuler CT, Maolanon NN, Sauer J, Stougaard J, Thygesen MB, Jensen KJ. Preparation of glycoconjugates from unprotected carbohydrates for protein-binding studies. Nat Protoc 2017; 12:2411-2422. [PMID: 29072708 DOI: 10.1038/nprot.2017.109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Glycobiology, in particular the study of carbohydrate-protein interactions and the events that follow, has become an important research focus in recent decades. To study these interactions, many assays require homogeneous glycoconjugates in suitable amounts. Their synthesis is one of the methodological challenges of glycobiology. Here, we describe a versatile, three-stage protocol for the formation of glycoconjugates from unprotected carbohydrates, including those purified from natural sources, as exemplified here by rhizobial Nod factors and exopolysaccharide fragments. The first stage is to add an oligo(ethylene glycol) linker (OEG-linker) that has a terminal triphenylmethanethiol group to the reducing end of the oligosaccharide by oxime formation catalyzed by aniline. The triphenylmethyl (trityl) tag is then removed from the linker to expose a thiol (stage 2) to allow a conjugation reaction at the thiol group (stage 3). There are many possible conjugation reactions, depending on the desired application. Examples shown in this protocol are as follows: (i) coupling of the oligosaccharide to a support for surface plasmon resonance (SPR) studies, (ii) fluorescence labeling for microscale thermophoresis (MST) or bioimaging, and (iii) biotinylation for biolayer interferometry (BLI) studies. This protocol starts from unprotected carbohydrates and provides glycoconjugates in milligram amounts in just 2 d.
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Affiliation(s)
- Christian T Hjuler
- Centre for Carbohydrate Recognition and Signaling, Copenhagen University, Frederiksberg, Denmark.,Department of Chemistry, University of Copenhagen, Frederiksberg, Denmark
| | - Nicolai N Maolanon
- Centre for Carbohydrate Recognition and Signaling, Copenhagen University, Frederiksberg, Denmark.,Department of Chemistry, University of Copenhagen, Frederiksberg, Denmark
| | - Jørgen Sauer
- Centre for Carbohydrate Recognition and Signaling, Copenhagen University, Frederiksberg, Denmark.,Department of Chemistry, University of Copenhagen, Frederiksberg, Denmark
| | - Jens Stougaard
- Centre for Carbohydrate Recognition and Signaling, Aarhus University, Aarhus, Denmark.,Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Mikkel B Thygesen
- Centre for Carbohydrate Recognition and Signaling, Copenhagen University, Frederiksberg, Denmark.,Department of Chemistry, University of Copenhagen, Frederiksberg, Denmark
| | - Knud J Jensen
- Centre for Carbohydrate Recognition and Signaling, Copenhagen University, Frederiksberg, Denmark.,Department of Chemistry, University of Copenhagen, Frederiksberg, Denmark
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Villadsen K, Martos-Maldonado MC, Jensen KJ, Thygesen MB. Chemoselective Reactions for the Synthesis of Glycoconjugates from Unprotected Carbohydrates. Chembiochem 2017; 18:574-612. [DOI: 10.1002/cbic.201600582] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Klaus Villadsen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Manuel C. Martos-Maldonado
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Knud J. Jensen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
| | - Mikkel B. Thygesen
- Department of Chemistry; University of Copenhagen; Faculty of Science; Thorvaldsensvej 40 1871 Frederiksberg C Denmark
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Beniwal S, Chhimpa S, Gaur D, John P, Singh Y, Sharma J. Syntheses, characterization, antibacterial activity and molecular modelling of phenylantimony(III) heteroleptic derivatives containing substituted oximes and piperidine dithiocarbamate. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Savita Beniwal
- Department of Chemistry; University of Rajasthan; Jaipur 302004 India
| | - Sunil Chhimpa
- Department of Zoology, Centre for Advanced Studies; University of Rajasthan; Jaipur 302004 India
| | - Deepti Gaur
- Department of Computer Science; North Cap University; Gurgaon 122017 India
| | - P.J. John
- Department of Zoology, Centre for Advanced Studies; University of Rajasthan; Jaipur 302004 India
| | - Yashpal Singh
- Department of Chemistry; University of Rajasthan; Jaipur 302004 India
| | - Jyoti Sharma
- Department of Chemistry; University of Rajasthan; Jaipur 302004 India
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El-Tabl AS, Shakdofa MME, Whaba MA. Synthesis, characterization and fungicidal activity of binary and ternary metal(II) complexes derived from 4,4'-((4-nitro-1,2-phenylene) bis(azanylylidene))bis(3-(hydroxyimino)pentan-2-one). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt C:1941-1949. [PMID: 25467689 DOI: 10.1016/j.saa.2014.10.112] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 10/12/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
Ternary copper(II) and binary copper(II), nickel(II) and cobalt(II) complexes derived from 4,4'-((4-nitro-1,2-phenylene)bis(azanylylidene))bis(3-(hydroxyimino)pentan-2-one) (H2L) were synthesized and characterized by elemental and thermal analyses, IR, UV-Vis. and (1)H NMR spectroscopy, conductivity and magnetic moments measurements. The analytical and spectral data showed that, the ligand acts as dibasic tetradentate or dibasic hexadentate bonding to the metal ion via the two-imine nitrogen, two nitrogen and/or oximato oxygen atoms of deprotonated oxime groups forming five and/or six rings including the metal ions. The complexes adopt either tetragonal distorted octahedral or square planar geometry around metal ions. The ESR spectra of the solid copper(II) complexes are characteristic to d(9) configuration and having an axial symmetry type of a d(x2-y2) ground state. The g values confirmed the geometry is elongated tetragonal octahedral geometry with considerably ionic or covalent environment. The antifungal biological activity of the prepared compounds was studied using well diffusion method. The obtained results showed that, the ligand is biologically inactive while its metal complexes were more potent fungicides than the ligand and standard antifungal drug (Amphotericin B).
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Affiliation(s)
- Abdou S El-Tabl
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom, Egypt.
| | - Mohamad M E Shakdofa
- Department of Chemistry, Faculty of Science and Arts, Khulais, King Abdulaziz University, Saudi Arabia; Inorganic Chemistry Department, National Research Centre, P.O. 12311, Dokki, Cairo, Egypt
| | - Mohamad A Whaba
- Inorganic Chemistry Department, National Research Centre, P.O. 12311, Dokki, Cairo, Egypt
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Hushegyi A, Tkac J. Are glycan biosensors an alternative to glycan microarrays? ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2014; 6:6610-6620. [PMID: 27231487 PMCID: PMC4878710 DOI: 10.1039/c4ay00692e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Complex carbohydrates (glycans) play an important role in nature and study of their interaction with proteins or intact cells can be useful for understanding many physiological and pathological processes. Such interactions have been successfully interrogated in a highly parallel way using glycan microarrays, but this technique has some limitations. Thus, in recent years glycan biosensors in numerous progressive configurations have been developed offering distinct advantages compared to glycan microarrays. Thus, in this review advances achieved in the field of label-free glycan biosensors are discussed.
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Affiliation(s)
- A Hushegyi
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 845 38, Slovakia
| | - J Tkac
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava 845 38, Slovakia
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Tsuruta T, Koyama T, Yasutake M, Hatano K, Matsuoka K. Synthesis of chiral dopants based on carbohydrates. Carbohydr Res 2014; 393:15-22. [DOI: 10.1016/j.carres.2014.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 04/03/2014] [Accepted: 04/07/2014] [Indexed: 10/25/2022]
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