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Wang J, Ding X, Lan Z, Liu G, Hou S, Hou S. Imidazole Compounds: Synthesis, Characterization and Application in Optical Analysis. Crit Rev Anal Chem 2024; 54:897-922. [PMID: 35001757 DOI: 10.1080/10408347.2021.2023459] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Imidazole is a five-membered heterocyclic ring containing three carbon atoms, two nitrogen atoms, and two double bonds. Among two nitrogen atoms, one of which carries with a hydrogen atom is a pyrrole-type nitrogen atom, another is a pyridine type nitrogen atom. Hence, the imidazole ring belongs to the π electron-rich aromatic ring and can accept strong suction to the electronic group. Moreover, the nitrogen atom of the imidazole ring is coordinated with metal ions to form metal-organic frameworks. In recent years, because of imidazole compounds' unique optical properties, their applications have attracted more and more attention in optical analysis. Thus, this review has summarized the synthesis, characterization, and application with emphasis on the research progress of imidazole compounds in optical analysis, including fluorescence probe, colorimetric probe, electrochemiluminescence sensor, fiber optical sensor, surface plasmon resonance, etc. This paper will suggest the direction for the development of imidazole-containing sensors with high sensitivity and selectivity.
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Affiliation(s)
- Junjie Wang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P.R. China
| | - Xin Ding
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P.R. China
| | - Zhenni Lan
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P.R. China
| | - Guangyan Liu
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P.R. China
| | - Shili Hou
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P.R. China
| | - Shifeng Hou
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, P.R. China
- National Engineering and Technology Research Center for Colloidal Materials, Shandong University, Jinan, P.R. China
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Jindal G, Vashisht P, Kaur N. Benzimidazole appended optical sensors for ionic species: Compilation of literature reports from 2017 to 2022. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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3
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Wang Y, Chen H, Zang J, Zhang X, Zhao G. Re-designing ferritin nanocages for mercuric ion detection. Analyst 2019; 144:5890-5897. [PMID: 31497803 DOI: 10.1039/c9an01110b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Protein nanocages have recently received considerable attention in the fields of nanoscience and nanomedicine and have been used as either biotemplates for the preparation of a variety of nanomaterials or vehicles for drugs or imaging agents. However, their utilization for detection of heavy metal ions has yet to be explored. In this study, by grafting a mercury binding peptide (MBP) on the exterior surface of a recombinant human H-chain ferritin (rHuHF) nanocage, we successfully prepared a new protein nanocage (HuHF-MBP) which exhibits high binding capacity and affinity for Hg2+. The fluorescence of HuHF-MBP labeled with a green fluorescent dye fluorescein isothiocyanate (FITC) can be quenched by graphene oxide (GO), while addition of Hg2+ to the above solution recovered the quenched fluorescence in a dose-dependent manner. Thus, this system consisting of FITC-labeled HuHF-MBP and GO, where FITC and graphene oxide were used as fluorescent reporter probes, has great potential to be explored as a sensor for Hg2+ detection. Indeed, this newly constructed protein sensor exhibited high sensitivity and selectivity for Hg2+, and the limit of detection was 1.0 nM. The construction of this system provides an alternative strategy for the preparation of heavy metal ion sensors by using protein nanocages as biotemplates.
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Affiliation(s)
- Yingjie Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing Key Laboratory of Functional Food from Plant Resources, Beijing, 100083, China.
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Yeole SD, Khire SS, Sarode CH, Patil KD. On the cation– $$\uppi $$ π interactions in 1,2-dihydro-1,2-azaborine. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1500-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sharma B, Umadevi D, Narahari Sastry G. Contrasting preferences of N and P substituted heteroaromatics towards metal binding: probing the regioselectivity of Li+ and Mg2+ binding to (CH)6−m−nNmPn. Phys Chem Chem Phys 2012; 14:13922-32. [DOI: 10.1039/c2cp41834g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Sharma B, Rao JS, Sastry GN. Effect of Solvation on Ion Binding to Imidazole and Methylimidazole. J Phys Chem A 2011; 115:1971-84. [DOI: 10.1021/jp1120492] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Bhaskar Sharma
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, AP, India
| | - J. Srinivasa Rao
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, AP, India
| | - G. Narahari Sastry
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, AP, India
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8
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Rao JS, Zipse H, Sastry GN. Explicit Solvent Effect on Cation−π Interactions: A First Principle Investigation. J Phys Chem B 2009; 113:7225-36. [DOI: 10.1021/jp900013e] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- J. Srinivasa Rao
- Molecular Modeling Group, Indian Institute of Chemical Technology, Tarnaka, Hyderabad - 500 607, India, and Department Chemie and Biochemie, LMU München, Butenandtstrasse 5-13, D-81377, München, Germany
| | - Hendrik Zipse
- Molecular Modeling Group, Indian Institute of Chemical Technology, Tarnaka, Hyderabad - 500 607, India, and Department Chemie and Biochemie, LMU München, Butenandtstrasse 5-13, D-81377, München, Germany
| | - G. Narahari Sastry
- Molecular Modeling Group, Indian Institute of Chemical Technology, Tarnaka, Hyderabad - 500 607, India, and Department Chemie and Biochemie, LMU München, Butenandtstrasse 5-13, D-81377, München, Germany
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Rao JS, Sastry GN. Structural and Energetic Preferences of π, σ, and Bidentate Cation Binding (Li+, Na+, and Mg2+) to Aromatic Amines (Ph−(CH2)n−NH2, n = 2−5): A Theoretical Study. J Phys Chem A 2009; 113:5446-54. [DOI: 10.1021/jp811124g] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- J. Srinivasa Rao
- Molecular Modeling Group, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, India
| | - G. Narahari Sastry
- Molecular Modeling Group, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 607, India
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Reddy AS, Zipse H, Sastry GN. Cation−π Interactions of Bare and Coordinatively Saturated Metal Ions: Contrasting Structural and Energetic Characteristics. J Phys Chem B 2007; 111:11546-53. [PMID: 17850069 DOI: 10.1021/jp075768l] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the present work, we address an apparent disparity in the structural parameters of the X-ray structures and theoretical models of cation-pi complexes in biological and chemical recognition. Hydrated metal ion (Li+, Na+, K+, Mg2+, Ca2+) complexes with benzene (cation-pi) are considered as model systems to perform quantum mechanical calculations in evaluating the geometrical parameters and interaction energies of these complexes. The computations disclose that there is a variation in the structural parameters as well as in the interaction energies of these complexes with the multiple additions of water molecules. The distance between the cation and the pi-system increases with the addition of water molecules, delineating the influence of solvent or the neighborhood atoms on the structural parameters of cation-pi systems present in crystal structures.
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Affiliation(s)
- A Srinivas Reddy
- Molecular Modeling Group, Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
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Abstract
Cation-aromatic database (CAD) is a publicly available web-based database that aims to provide further understanding of interaction between a cation and the pi interactions. A tool to identify the interactions in a user-given protein is also added to the database. CAD is freely accessible via the Internet at http://203.199.182.73/gnsmmg/databases/cad/.
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Affiliation(s)
- A Srinivas Reddy
- Molecular Modeling Group, Organic Chemical Sciences, Indian Institute of Chemical Technology, Hyderabad 500007, India
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Amatori A, Ferkinghoff-Borg J, Tiana G, Broglia RA. Thermodynamic features characterizing good and bad folding sequences obtained using a simplified off-lattice protein model. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2006; 73:061905. [PMID: 16906862 DOI: 10.1103/physreve.73.061905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2005] [Indexed: 05/11/2023]
Abstract
The thermodynamics of the small SH3 protein domain is studied by means of a simplified model where each beadlike amino acid interacts with the others through a contact potential controlled by a random matrix. Good folding sequences, characterized by a low native energy, display three main thermodynamical ensembles, namely, a coil-like ensemble, an unfolded globule, and a folded ensemble (plus two other states, frozen and random coils, populated only at extreme temperatures). Interestingly, the unfolded globule has some regions already structured. Poorly designed sequences, on the other hand, display a wide transition from the random coil to a frozen state. The comparison with the analytic theory of heteropolymers is discussed.
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Affiliation(s)
- A Amatori
- Department of Physics, University of Milano and INFN, sezione di Milano, via Celoria 16, 20133 Milano, Italy
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Arnesano F, Banci L, Bertini I, Ciofi‐Baffoni S. Perspectives in Inorganic Structural Genomics: A Trafficking Route for Copper. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300841] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fabio Arnesano
- Magnetic Resonance Center CERM and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Florence, Italy, Fax: (internat.) + 39‐055‐4574271
| | - Lucia Banci
- Magnetic Resonance Center CERM and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Florence, Italy, Fax: (internat.) + 39‐055‐4574271
| | - Ivano Bertini
- Magnetic Resonance Center CERM and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Florence, Italy, Fax: (internat.) + 39‐055‐4574271
| | - Simone Ciofi‐Baffoni
- Magnetic Resonance Center CERM and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Florence, Italy, Fax: (internat.) + 39‐055‐4574271
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Banci L, Bertini I, Ciofi-Baffoni S, Finney LA, Outten CE, O'Halloran TV. A new zinc-protein coordination site in intracellular metal trafficking: solution structure of the Apo and Zn(II) forms of ZntA(46-118). J Mol Biol 2002; 323:883-97. [PMID: 12417201 DOI: 10.1016/s0022-2836(02)01007-0] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Zinc, a metal ion that functions in a wide variety of catalytic and structural sites in metalloproteins, is shown here to adopt a novel coordination environment in the Escherichia coli transport protein ZntA. The ZntA protein is a P-type ATPase that pumps zinc out of the cytoplasm and into the periplasm. It is physiologically selective for Zn(II) and functions with metalloregulatory proteins in the cell to keep the zinc quota within strict limits. Yet, the N-terminal cytoplasmic domain contains a region that is highly homologous to the yeast Cu(I) metallochaperone Atx1. To investigate how the structure of this region may influence its function, this fragment, containing residues 46-118, has been cloned out of the gene and overexpressed. We report here the solution structure of this fragment as determined by NMR. Both the apo and Zn(II)-ZntA(46-118) structures have been determined. It contains a previously unknown protein coordination site for zinc that includes two cysteine residues, Cys59 and Cys62, and a carboxylate residue, Asp58. The solvent accessibility of this site is also remarkably high, a feature that increasingly appears to be a characteristic of domains of heavy metal ion transport proteins. The participation of Asp58 in this ZntA metal ion binding site may play an important role in modulating the relative affinities and metal exchange rates for Zn(II)/Pb(II)/Cd(II) as compared with other P-type ATPases, which are selective for Cu(I) or Ag(I).
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Affiliation(s)
- Lucia Banci
- Magnetic Resonance Center CERM and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019, Sesto Fiorentino, Italy
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Schäfer BW, Fritschy JM, Murmann P, Troxler H, Durussel I, Heizmann CW, Cox JA. Brain S100A5 is a novel calcium-, zinc-, and copper ion-binding protein of the EF-hand superfamily. J Biol Chem 2000; 275:30623-30. [PMID: 10882717 DOI: 10.1074/jbc.m002260200] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
S100A5 is a novel member of the EF-hand superfamily of calcium-binding proteins that is poorly characterized at the protein level. Immunohistochemical analysis demonstrates that it is expressed in very restricted regions of the adult brain. Here we characterized the human recombinant S100A5, especially its interaction with Ca(2+), Zn(2+), and Cu(2+). Flow dialysis revealed that the homodimeric S100A5 binds four Ca(2+) ions with strong positive cooperativity and an affinity 20-100-fold higher than the other S100 proteins studied under identical conditions. S100A5 also binds two Zn(2+) ions and four Cu(2+) ions per dimer. Cu(2+) binding strongly impairs the binding of Ca(2+); however, none of these ions change the alpha-helical-rich secondary structure. After covalent labeling of an exposed thiol with 2-(4'-(iodoacetamide)anilino)-naphthalene-6-sulfonic acid, binding of Cu(2+), but not of Ca(2+) or Zn(2+), strongly decreased its fluorescence. In light of the three-dimensional structure of S100 proteins, our data suggest that in each subunit the single Zn(2+) site is located at the opposite side of the EF-hands. The two Cu(2+)-binding sites likely share ligands of the EF-hands. The potential role of S100A5 in copper homeostasis is discussed.
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Affiliation(s)
- B W Schäfer
- Department of Pediatrics, Division of Clinical Chemistry and Biochemistry, University of Zurich, Steinwiesstrasse 75, CH-8032 Zurich, the Institute of Pharmacology, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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Abstract
Major advances have been made in the past year towards an understanding of the structure and chemistry of copper chaperone proteins. Three-dimensional structures of Atx1, CopZ, yCCS, and hCCSdII were determined, and reveal a remarkable structural similarity between chaperones and target proteins. In addition, biochemical studies of CCS suggested that chaperones are required in vivo because intracellular copper concentrations are extremely low and also indicated that copper transfer occurs via a direct protein-protein interaction.
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Affiliation(s)
- A C Rosenzweig
- Department of Biochemistry, Molecular Biology, and Cell Biology, Northwestern University, Evanston, IL 60208, USA.
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Jensen PY, Bonander N, Horn N, Tümer Z, Farver O. Expression, purification and copper-binding studies of the first metal-binding domain of Menkes protein. EUROPEAN JOURNAL OF BIOCHEMISTRY 1999; 264:890-6. [PMID: 10491137 DOI: 10.1046/j.1432-1327.1999.00680.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The cDNA, coding for the first metal-binding domain (MBD1) of Menkes protein, was cloned into the T7-system based vector, pCA. The T7 lysozyme-encoding plasmid, pLysS, is shown to be crucial for expression, suggesting that the protein is toxic to the cells. Adding copper to the growth medium did not affect the plasmid stability. MBD1 is purified in two steps with a typical yield of 12 mg.L-1. Menkes protein, a P-type ATPase, contains a sequence GMXCXSC that is repeated six times, at the N-terminus. The paired cysteine residues are involved in metal binding. MBD1 has only two cysteine residues, which can exist as free thiol groups (reduced), as a disulphide bond (oxidized) or bound to a metal ion [e.g. Cu(I)-MBD1]. These three MBD1 forms have been investigated using CD. No major spectral change was seen between the different MBD1 forms, indicating that the folding is not changed upon metal binding. A copper-bound MBD1 was also studied by EPR, and the lack of an EPR signal suggests that the oxidation state of copper bound to MBD1 is Cu(I). Cu(I) binding studies were performed by equilibrium dialysis and revealed a stoichiometry of 1 : 1 and an apparent Kd = 46 microM. Oxidized MBD1, however, is not able to bind copper. Different copper complexes were investigated for their ability to reconstitute apo-MBD1. Given the same total copper concentration CuCl43- was superior to Cu(I)-thiourea (structural analogue of metallothionein) and Cu(I)-glutathione (used at fivefold higher copper concentration) although the latter two were able to partially reconstitute apo-MBD1. Cu(II) was not able to reconstitute apo-MBD1, presumably due to Cu(II)-induced oxidation of the thiol groups. Based on our results, glutathione and/or metallothionein are likely candidates for the in vivo incorporation of copper to Menkes protein.
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Affiliation(s)
- P Y Jensen
- Department of Analytical Chemistry, The Royal Danish School of Pharmacy, Copenhagen, Demark.
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